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datashee t product structure silicon monolithic integrated circuit this product has no designed protec tion against radioactive rays . 1/44 tsz02201-0313aaf00430-1-2 ? 2013 rohm co., ltd. all rights reserved. 12.may.2015 rev.003 tsz22111 ? 14 ? 001 www.rohm.com power supply ic series for tft-lcd panels multi-channel system power supply ic bm81028amwv general description bm81028amwv is a system power supply ic for tft-lcd panels which are used in monitors, notebook type displays, and tablets. this ic incorporates havdd, vcom amplifier in addition to the power supply for panel driver (source, gate, and logic power supplies). moreover, this ic has a built-in eeprom for sequence and output voltage setting retention. applications tft-lcd panels which are used in monitors, note pcs and tablets. features ? input voltage range: 2.7v to 5.5v ? standby current: 1.4 a (typ) ? operating temperature range: -40 to +85 ? step-down dc/dc converter 2-channels (synchronous rectification) ? step-up dc/dc converter (integrated load switch and synchronous rectification) ? havdd amplifier (8bit resolution) ? vcom amplifier (8bit resolution) ? positive charge pump (integrated diode) ? negative charge pump ? i 2 c interface output voltage setting control function (integrated eeprom) ? switching frequency switching function (600khz,1200khz) ? protection circuits ? under-voltage lockout ? thermal shut down ? over-current protection ? over-voltage protection ? short circuit protection (timer latch type) ? input tolerant (scl, sda,en) package w(typ) d(typ) h(max) uqfn28v4040a 4.0mm x 4.00mm x 1.00m typical application circuit fig.1. typical application circuit downloaded from: http:///
datasheet d a t a s h e e t 2/44 tsz02201-0313aaf00430-1-2 ? 2013 rohm co., ltd. all rights reserved. 12.may.2015 rev.003 www.rohm.com tsz22111 ? 15 ? 001 bm81028amwv pin configuration pin descriptions pin no. pin name function pin no. pin name function 1 drn negative charge pump driver pin 15 swb1 step-down dc/dc switching pin 1 2 avddp avdd input 16 pvcc1 step-down dc/dc power supply input 3 havdd havdd amplifier output 17 swb2 step-down dc/dc switching pin 2 4 vcom vcom amplifier output 18 pgnd2 step-down/-up dc/dc ground 5 gnd ground 19 sw step-up dc/dc switching pin 6 fault fault signal output 20 avdd step-up dc/dc output 7 vcc power supply input 21 avdd_s step-up dc/dc output feedback 8 scl serial clock input (i2c) 22 pvcc2 step-up dc/dc load switch input 9 sda serial clock data input (i2c) 23 vlso step-up dc/dc load switch output 10 en enable input 24 vgl negative charge pump feedback 11 vreg inner power supply output 25 cpgnd charge pump ground 12 vdd2 step-down dc/dc output feedback input 2 26 vgh positive charge pump feedback 13 vdd1 step-down dc/dc output feedback input 1 27 cpp built-in positive charge pump switching di output 14 pgnd1 step-down dc/dc ground 28 drp positive charge pump driver pin _ fig.2 pin configuration downloaded from: http:///
datasheet d a t a s h e e t 3/44 tsz02201-0313aaf00430-1-2 ? 2013 rohm co., ltd. all rights reserved. 12.may.2015 rev.003 www.rohm.com tsz22111 ? 15 ? 001 bm81028amwv block diagram fig.3 block diagram a a a _ a a a a a a a a a a a a a a a _ downloaded from: http:///
datasheet d a t a s h e e t 4/44 tsz02201-0313aaf00430-1-2 ? 2013 rohm co., ltd. all rights reserved. 12.may.2015 rev.003 www.rohm.com tsz22111 ? 15 ? 001 bm81028amwv function description of each block enumerated below are the different blocks and the output voltages they generate. also , discussed are the protection circuits that can shut down each block to prevent ic destruction. all output voltages generated by each block, startup order, and delay time (delay1 and delay2) can be set through the eeprom. upon start-up, these settings are read from the eeprom and copied to the registers. buck converter block (vdd1, vdd2) generates the vdd1 and vdd2 voltages after vcc uvlo release at en=high. this block shuts down when scp or ocp is detected. boost converter block (avdd) generates the avdd voltage after the configured delay2 time. this block shuts down when ovp, scp, or ocp is detected. havdd amp block (havdd) generates the havdd voltage based on the avdd voltage. thus, the havdd voltage is produced after the avdd voltage. vcom amp block (vcom) generates the vcom voltage bas ed on the avdd voltage. thus, the vcom voltage is produced after the avdd voltage. positive charge pump block (vgh) generates the vgh voltage bas ed on the avdd voltage. thus, the vgh voltage is produced after the avdd voltage. this block shuts down when scp is detected. negative charge pump block (vgl) generates the vgl voltage ba sed on the avdd voltage. it starts up after the configured delay2 time. this block shuts down when scp is detected. downloaded from: http:///
datasheet d a t a s h e e t 5/44 tsz02201-0313aaf00430-1-2 ? 2013 rohm co., ltd. all rights reserved. 12.may.2015 rev.003 www.rohm.com tsz22111 ? 15 ? 001 bm81028amwv absolute maximum ratings parameter symbol limits unit min typ max power supply voltage vcc, pvcc1, pvcc2 -0.3 6.5 v output pin swb1, swb2 -0.3 pvcc1+0.3 v vdd1, vdd2 -0.3 6.5 v avdd, avddp, sw -0.3 19 v vlso -0.3 6.5 v havdd, vcom -0.3 avddp+0.3 v drp, drn -0.3 avddp+0.3 v cpp -0.3 30 v vgh, -0.3 36 v vgl -15 0.3 v vreg -0.3 vcc+0.3 v fault -0.3 6.5 v functional pin voltage scl, sda, en -0.3 6.5 v maximum junction temperature tjmax (1) 150 power dissipation pd (2) 2.01 w operating temperature range topr -40 85 storage temperature range tstg -55 150 (1) junction temperature at storage time. (2) jedec standard (4 layers) recommended operating ratings(t a =-40 to +85 ) parameter symbol min typ max unit power supply voltage 1 ( dc/dc block protection detection voltage 1 setting) vcc,pvcc1,pvcc2 2.7 5.5 v power supply voltage 2 ( dc/dc block protection detection voltage 2 setting) 2.9 5.5 v power supply voltage 3 ( dc/dc block protection detection voltage 3 setting) 3.1 5.5 v power supply voltage 4 ( dc/dc block protection detection voltage 4 setting) 3.3 5.5 v swb1,swb2 current isw1 1.0 a sw current isw2 1.5 a functional pin voltage en -0.1 5.5 v 2 line serial pin voltage sda, scl -0.1 5.5 v 2 line serial frequency fclk 400 khz downloaded from: http:///
datasheet d a t a s h e e t 6/44 tsz02201-0313aaf00430-1-2 ? 2013 rohm co., ltd. all rights reserved. 12.may.2015 rev.003 www.rohm.com tsz22111 ? 15 ? 001 bm81028amwv electrical characteristics (unless otherwise specified, ta=25 , vcc, pvcc1, pvcc2=3.3v) 1. buck dc/dc converter block 1 (vdd1) parameter symbol limits unit condition min typ max output voltage range vdd1 1.7 1.9 v 50mv step 2.4 2.6 output voltage accuracy vdd1_r 1.782 1.8 1.818 v vdd1=1.8v setting 2.475 2.5 2.525 v vdd1=2.5v setting soft start time vdd1_ss 0.5 1 2 msec the time where 90% of set voltage is reached. timer latch starting time vdd1_scp vdd10.8 v swb1 h side on resistance ron_h1 300 480 m ? swb1 l side on resistance ron_l1 300 480 m ? swb1 h side leak current il_h1 0 10 a swb1 l side leak current il_l1 0 10 a current limit ilmt_swb1 1.0 1.5 a discharge resistance disr_vdd1 25 50 ? 2. buck dc/dc converter block 2 (vdd2) parameter symbol limits unit condition min typ max output voltage range vdd2 1.1 1.3 v 50mv step output voltage accuracy vdd2_r 1.188 1.2 1.212 v vdd2=1.2v setting soft start time vdd2_ss 0.5 1 2 msec the time where 90% of set voltage is reached. timer latch starting time vdd2_scp vdd20.8 v swb2 h side on resistance ron_h2 300 480 m ? swb2 l side on resistance ron_l2 300 480 m ? swb2 h side leak current il_h2 0 10 a swb2 l side leak current il_l2 0 10 a current limit ilmt_swb2 1.0 1.5 a discharge resistance disr_vdd2 25 50 ? 3. boost dc/dc converter block (avdd) parameter symbol limits unit condition min typ max output voltage range avdd 8.0 14.5 v 0.1v step output voltage accuracy1 avdd_r1 10. 395 10.5 10.605 v avdd=10.5v setting output voltage accuracy2 avdd_r2 -1.0 0 +1.0 % avdd=9.7 to 11.2v setting output voltage accuracy3 avdd_r3 -1.7 0 +1.7 % avdd=8.0 to 9.6v, 11.3 to 12.8v setting output voltage accuracy4 avdd_r4 -2.0 0 +2.0 % avdd=12.9 to 14.5v setting load switch soft start time ls_ss 1 2 4 msec soft start time avdd_ss 3.5 5 6.5 msec avdd=10.5v setting timer latch starting time avdd_scp avdd0.8 v over-voltage protection voltage avdd_ovp 16 v sw h side on resistance ron_h3 350 560 m ? sw l side on resistance ron_l3 350 560 m ? sw h side leak current il_h3 0 10 a sw l side leak current il_l3 0 10 a current limit ilmt_sw 1.5 2.0 a load switch on resistor ron_ls 250 400 m ? maximum duty dmax 80 90 % discharge resistance disr_avdd 25 50 ? downloaded from: http:///
datasheet d a t a s h e e t 7/44 tsz02201-0313aaf00430-1-2 ? 2013 rohm co., ltd. all rights reserved. 12.may.2015 rev.003 www.rohm.com tsz22111 ? 15 ? 001 bm81028amwv electrical characteristics (unless otherwise specified, ta=25 , vcc, pvcc1, pvcc2=3.3v) 4. havdd amplifier block (havdd) parameter symbol limits unit condition min typ max output voltage range havdd 0.6 avdd- 3.1875 0.6 avdd v 12.5mv step resolution res1 8 bit integral non-linearity erro r ( inl ) inl1 -1 +1 lsb input code: 02h to fdh differential non-linearity error ( dnl ) dnl1 -1 +1 lsb input code: 02h to fdh output current ability (source) isource1 200 ma output current ability (sink) isink1 200 ma load stability ? vo1 10 70 mv io=-15ma to +15ma slew rate sr1 20 v/sec 5. vcom amplifier block (vcom) parameter symbol limits unit condition min typ max output voltage range vcom 0.45 avdd- 3.1875 0.45 avdd v 12.5mv step resolution res2 8 bit integral non-linearity erro r ( inl ) inl2 -1 +1 lsb input code: 02h to fdh differential non-linearity error ( dnl ) dnl2 -1 +1 lsb input code: 02h to fdh output current ability ( source ) vol2 200 ma output current ability (sink) isource2 200 ma load stability isink2 10 70 mv io=-15ma to +15ma slew rate sr2 20 v/sec discharge resistor disr_vcom 50 100 ? 6. positive charge pump block (vgh) parameter symbol limits unit condition min typ max output voltage range vgh 13 26 v 0.2v step output voltage accuracy vgh_r 17.1 18 18.9 v vgh=18v setting soft start time vgh_ss 3.5 5 6.5 msec vgh=18v setting timer latch starting time vgh_scp vgh0.8 v drp h side on resistance ron_h4 5 ? drp l side on resistance ron_l4 10 ? cpp h side on resistance ron_h4 10 ? cpp l side on resistance ron_l4 10 ? discharge resistance disr_vgh 150 300 ? 7. negative charge pump block (vgl) parameter symbol limits unit condition min typ max output voltage range vgl -9.5 -4 v 0.1v step output voltage accuracy vgl_r -6 .3 -6 -5.7 v vgh=-6.0v setting soft start time vgl_ss 3.5 5 6.5 msec timer latch starting time vgl_scp vgl0.8 v drn h side on resistance ron_h5 5 ? drn l side on resistance ron_l5 10 ? discharge resistance disr_vgl 250 500 ? downloaded from: http:///
datasheet d a t a s h e e t 8/44 tsz02201-0313aaf00430-1-2 ? 2013 rohm co., ltd. all rights reserved. 12.may.2015 rev.003 www.rohm.com tsz22111 ? 15 ? 001 bm81028amwv electrical characteristics (unless otherwise specified, ta=25 , vcc, pvcc1, pvcc2=3.3v) 8. overall (entire device) parameter symbol limits unit condition min typ max inside regulator voltage vreg output voltage vr eg 2.15 2.3 2.45 v load stability S v 20 100 mv ivreg=20ma oscillator block dc/dc block oscillating frequency 1 fosc1 480 600 720 khz dc/dc block oscillating frequency 2 fosc2 960 1200 1440 khz charge pump block oscillating frequency 1 fosc1_cp 240 300 360 khz charge pump block oscillating frequency 2 fosc2_cp 480 600 720 khz under voltage lock out (uvlo) circuit uvlo return voltage vuvlo 2.2 2.4 2.6 v uvlo detection voltage vdet 1.9 2.1 2.3 v hysteresis vhys - 0.3 - v dc/dc block under-voltage lockout circuit block dc/dc block protection detection voltage 1 dc_det1 2.35 2.5 2.65 v uvlo is released when vcc exceeds 2.8v. dc/dc block protection detection voltage 2 dc_det2 2.55 2.7 2.85 v uvlo is released when vcc exceeds 3.0v. dc/dc block protection detection voltage 3 dc_det3 2.75 2.9 3.05 v uvlo is released when vcc exceeds 3.2v. dc/dc block protection detection voltage 4 dc_det4 2.95 3.1 3.25 v uvlo is released when vcc exceeds 3.4v. dc/dc block protection return voltage 1 dc_rel1 2.55 2.7 2.85 v dc/dc block protection return voltage 2 dc_rel2 2.75 2.9 3.05 v dc/dc block protection return voltage 3 dc_rel3 2.95 3.1 3.25 v dc/dc block protection return voltage 4 dc_rel4 3.15 3.3 3.45 v fault signal output block output off leak current ifl 0 10 ua output on resistance ron_f 1 2 k ? control signal block1 sda, scl minimum output voltage vsda 0.4 v isda=3ma h level input voltage vih1 1.7 v vcc=2.5 5.5v ta = - 4 0 +85 l level input voltage vil1 0.6 v vcc=2.5 5.5v ta = - 4 0 +85 control signal block2 en pull-down resistance value rctl2 280 400 520 k ? h level input voltage vih2 1.7 v vcc=2.5 5.5v ta = - 4 0 +85 l level input voltage vil2 0.6 v vcc=2.5 5.5v ta = - 4 0 +85 overall standby consumption current i cc1 0.8 1.4 2.0 a en=l consumption current icc2 1.7 3.2 4.7 ma en=h, no switching downloaded from: http:///
datasheet d a t a s h e e t 9/44 tsz02201-0313aaf00430-1-2 ? 2013 rohm co., ltd. all rights reserved. 12.may.2015 rev.003 www.rohm.com tsz22111 ? 15 ? 001 bm81028amwv reference data (unless otherwise specified, ta=25 , vcc, pvcc1, pvcc2=3.3v, vdd1=2.5v, vdd2=1.2v, avdd=10.5v, vgh=18v, vgl=-6v, havdd=5.25v, vcom=3.25v, no load) fig.4 standby current fig.5 circuit current no switching fig.6 switching frequency (600khz fig.7 switching frequency (1200khz 0 1 2 3 4 5 vcc supply voltage [v] stand by current [ua] 0 1 2 3 4 5 vcc supply voltage [v] circuit current [ma] 400 450 500 550 600 650 700 750 800 vcc supply voltage [v] 1000 1050 1100 1150 1200 1250 1300 1350 1400 vcc supply voltage [v] frequency [khz] frequency [khz] downloaded from: http:///
datasheet d a t a s h e e t 10/44 tsz02201-0313aaf00430-1-2 ? 2013 rohm co., ltd. all rights reserved. 12.may.2015 rev.003 www.rohm.com tsz22111 ? 15 ? 001 bm81028amwv reference data (unless otherwise specified, ta=25 , vcc, pvcc1, pvcc2=3.3v, vdd1=2.5v, vdd2=1.2v, avdd=10.5v, vgh=18v, vgl=-6v, havdd=5.25v, vcom=3.25v, no load) en en 5[v/div.] 5[v/div.] vdd1 vdd1 1[v/div.] 1[v/div.] i_vcc i_vcc 100[ma/div.] 100[ma/div.] 1[m s /div.] 1[m s /div.] fig.8 vdd1start-up sequence fig.9 vdd1 off sequence vdd1 vdd1 20[mv/div.] 20[mv/div.] i_load i_load 50[ma/div.] 50[ma/div.] 100[us/div.] 100[us/div.] fig.10 vdd1load transient fig.11 vdd1load transeint (25ma 75ma,tr=4us) (75ma 25ma,tf=4us) downloaded from: http:///
datasheet d a t a s h e e t 11/44 tsz02201-0313aaf00430-1-2 ? 2013 rohm co., ltd. all rights reserved. 12.may.2015 rev.003 www.rohm.com tsz22111 ? 15 ? 001 bm81028amwv reference (unless otherwise specified, ta=25 , vcc, pvcc1, pvcc2=3.3v, vdd1=2.5v, vdd2=1.2v, avdd=10.5v, vgh=18v, vgl=-6v, havdd=5.25v, vcom=3.25v, no load) fig.12 vdd1 efficiency fig.13 vdd1load regulation 0 20 40 60 80 100 load [ma] efficiency [%] -3 -2 -1 0 1 2 3 load [ma] output voltage [%] downloaded from: http:///
datasheet d a t a s h e e t 12/44 tsz02201-0313aaf00430-1-2 ? 2013 rohm co., ltd. all rights reserved. 12.may.2015 rev.003 www.rohm.com tsz22111 ? 15 ? 001 bm81028amwv reference data (unless otherwise specified, ta=25 , vcc, pvcc1, pvcc2=3.3v, vdd1=2.5v, vdd2=1.2v, avdd=10.5v, vgh=18v, vgl=-6v, havdd=5.25v, vcom=3.25v, no load) en en 5[v/div.] 5[v/div.] vdd2 vdd2 1[v/div.] 1[v/div.] i_vcc i_vcc 100[ma/div.] 100[ma/div.] 1[m s /div.] 1[m s /div.] fig.14 vdd2 start-up sequence fig.15 vdd2 off sequence vdd2 vdd2 20[mv/div.] 20[mv/div.] i_load i_load 50[ma/div.] 50[ma/div.] 100[us/div.] 100[us/div.] fig.16 vdd2 load transient fig.17 vdd2 load transient (50ma 250ma,tr=4us) (250ma 50m a,tf=4us ) downloaded from: http:///
datasheet d a t a s h e e t 13/44 tsz02201-0313aaf00430-1-2 ? 2013 rohm co., ltd. all rights reserved. 12.may.2015 rev.003 www.rohm.com tsz22111 ? 15 ? 001 bm81028amwv reference data (unless otherwise specified, ta=25 , vcc, pvcc1, pvcc2=3.3v, vdd1=2.5v, vdd2=1.2v, avdd=10.5v, vgh=18v, vgl=-6v, havdd=5.25v, vcom=3.25v, no load) fig.18 vdd2 efficiency fig.19 vdd2 load regulation 0 20 40 60 80 100 load [ma] efficiency [%] -3 -2 -1 0 1 2 3 load [ma] output voltage [%] downloaded from: http:///
datasheet d a t a s h e e t 14/44 tsz02201-0313aaf00430-1-2 ? 2013 rohm co., ltd. all rights reserved. 12.may.2015 rev.003 www.rohm.com tsz22111 ? 15 ? 001 bm81028amwv reference data (unless otherwise specified, ta=25 , vcc, pvcc1, pvcc2=3.3v, vdd1=2.5v, vdd2=1.2v, avdd=10.5v, vgh=18v, vgl=-6v, havdd=5.25v, vcom=3.25v, no load) vdd2 en 1[v/div.] 5[v/div.] avdd avdd 3[v/div.] 3[v/div.] i_vcc i_vcc 500[ma/div.] 500[ma/div.] 2[m s /div.] 2[m s /div.] fig.20 avdd start-up sequence fig.21 avdd off sequence avdd avdd 100[mv/div.] 100[mv/div.] i_load i_load 50[ma/div.] 50[ma/div.] 100[us/div.] 100[us/div.] fig.22 avdd load transient fig.23 avdd load transient (10ma 70ma,tr=4us) (70ma 10ma,tf=4us) S= S= S= S= downloaded from: http:///
datasheet d a t a s h e e t 15/44 tsz02201-0313aaf00430-1-2 ? 2013 rohm co., ltd. all rights reserved. 12.may.2015 rev.003 www.rohm.com tsz22111 ? 15 ? 001 bm81028amwv reference data (unless otherwise specified, ta=25 , vcc, pvcc1, pvcc2=3.3v, vdd1=2.5v, vdd2=1.2v, avdd=10.5v, vgh=18v, vgl=-6v, havdd=5.25v, vcom=3.25v, no load) fig.24 avdd efficiency fig.25 avdd load regulation fig.26 avdd linearity 0 20 40 60 80 100 load [ma] efficiency [%] -3 -2 -1 0 1 2 3 load [ma] output voltage [%] 6 8 10 12 14 16 digital codes output voltage [v] downloaded from: http:///
datasheet d a t a s h e e t 16/44 tsz02201-0313aaf00430-1-2 ? 2013 rohm co., ltd. all rights reserved. 12.may.2015 rev.003 www.rohm.com tsz22111 ? 15 ? 001 bm81028amwv reference data (unless otherwise specified, ta=25 , vcc, pvcc1, pvcc2=3.3v, vdd1=2.5v, vdd2=1.2v, avdd=10.5v, vgh=18v, vgl=-6v, havdd=5.25v, vcom=3.25v, no load) vdd2 vdd2 1[v/div.] 1[v/div.] avdd avdd 5[v/div.] 5[v/div.] vgh vgh 5[v/div.] 5[v/div.] i_vcc i_vcc 500[ma/div.] 500[ma/div.] 2[m s /div.] 2[m s /div.] fig.27 vgh start-up sequence fig.28 vgh off sequence fig.29 vgh load regulation fig.30 vgh linearity 12 15 18 21 24 27 digital codes -3 -2 -1 0 1 2 3 load [ma] output voltage [%] output voltage [v] downloaded from: http:///
datasheet d a t a s h e e t 17/44 tsz02201-0313aaf00430-1-2 ? 2013 rohm co., ltd. all rights reserved. 12.may.2015 rev.003 www.rohm.com tsz22111 ? 15 ? 001 bm81028amwv reference data (unless otherwise specified, ta=25 , vcc, pvcc1, pvcc2=3.3v, vdd1=2.5v, vdd2=1.2v, avdd=10.5v, vgh=18v, vgl=-6v, havdd=5.25v, vcom=3.25v, no load) vdd2 vdd2 1[v/div.] 1[v/div.] avdd avdd 5[v/div.] 5[v/div.] vgl vgl 5[v/div.] 5[v/div.] i_vcc i_vcc 500[ma/div.] 500[ma/div.] 2[m s /div.] 2[m s /div.] fig.31 vgl start-up sequence fig.32 vgl off sequence fig.33 vgl load regulation fig.34 vgl linearity -10 -8 -6 -4 -2 digital codes -3 -2 -1 0 1 2 3 load [ma] output voltage [%] output voltage [v] downloaded from: http:///
datasheet d a t a s h e e t 18/44 tsz02201-0313aaf00430-1-2 ? 2013 rohm co., ltd. all rights reserved. 12.may.2015 rev.003 www.rohm.com tsz22111 ? 15 ? 001 bm81028amwv reference data (unless otherwise specified, ta=25 , vcc, pvcc1, pvcc2=3.3v, vdd1=2.5v, vdd2=1.2v, avdd=10.5v, vgh=18v, vgl=-6v, havdd=5.25v, vcom=3.25v, no load) fig.35 havdd sink current fig.36 havdd source current havdd havdd 2[v/div.] 2[v/div.] 200[ns/div.] 200[ns/div.] fig.37 havdd slew rate rise fig.38 havdd slew rate fall -3 -2 -1 0 1 2 3 -3 -2 -1 0 1 2 3 21.6 [v/us ] 18.0 [v/us ] sink current [ma] output voltage [%] source current [ma] output voltage [%] downloaded from: http:///
datasheet d a t a s h e e t 19/44 tsz02201-0313aaf00430-1-2 ? 2013 rohm co., ltd. all rights reserved. 12.may.2015 rev.003 www.rohm.com tsz22111 ? 15 ? 001 bm81028amwv reference data (unless otherwise specified, ta=25 , vcc, pvcc1, pvcc2=3.3v, vdd1=2.5v, vdd2=1.2v, avdd=10.5v, vgh=18v, vgl=-6v, havdd=5.25v, vcom=3.25v, no load) fig.39 havdd inl fig.40 havdd dnl dnl [lsb]] inl [lsb] -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1 -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1 digital codes digital codes downloaded from: http:///
datasheet d a t a s h e e t 20/44 tsz02201-0313aaf00430-1-2 ? 2013 rohm co., ltd. all rights reserved. 12.may.2015 rev.003 www.rohm.com tsz22111 ? 15 ? 001 bm81028amwv reference data (unless otherwise specified, ta=25 , vcc, pvcc1, pvcc2=3.3v, vdd1=2.5v, vdd2=1.2v, avdd=10.5v, vgh=18v, vgl=-6v, havdd=5.25v, vcom=3.25v, no load) fig.41 vcom sink current fig.42 vcom source current vcom vcom 2[v/div.] 2[v/div.] 200[ns/div.] 200[ns/div.] fig.43 vcom slew rate rise fig.44 vcom slew rate fall -3 -2 -1 0 1 2 3 -3 -2 -1 0 1 2 3 21.0 [v/us] 17.0 [v/us] sink current [ma] output voltage [%] source current [ma] output voltage [%] downloaded from: http:///
datasheet d a t a s h e e t 21/44 tsz02201-0313aaf00430-1-2 ? 2013 rohm co., ltd. all rights reserved. 12.may.2015 rev.003 www.rohm.com tsz22111 ? 15 ? 001 bm81028amwv reference data (unless otherwise specified, ta=25 , vcc, pvcc1, pvcc2=3.3v, vdd1=2.5v, vdd2=1.2v, avdd=10.5v, vgh=18v, vgl=-6v, havdd=5.25v, vcom=3.25v, no load) fig.45 vcom inl fig.46 vcom dnl dnl [lsb]] inl [lsb] -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1 -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1 digital codes digital codes downloaded from: http:///
datasheet d a t a s h e e t 22/44 tsz02201-0313aaf00430-1-2 ? 2013 rohm co., ltd. all rights reserved. 12.may.2015 rev.003 www.rohm.com tsz22111 ? 15 ? 001 bm81028amwv timing chart1 start-up sequence (when operated by en control) fig.47 start-up sequence diagram (when operated by en control) downloaded from: http:///
datasheet d a t a s h e e t 23/44 tsz02201-0313aaf00430-1-2 ? 2013 rohm co., ltd. all rights reserved. 12.may.2015 rev.003 www.rohm.com tsz22111 ? 15 ? 001 bm81028amwv timing chart1 off sequence (when operated by en control) fig.48 off sequence block (when operated by en control) downloaded from: http:///
datasheet d a t a s h e e t 24/44 tsz02201-0313aaf00430-1-2 ? 2013 rohm co., ltd. all rights reserved. 12.may.2015 rev.003 www.rohm.com tsz22111 ? 15 ? 001 bm81028amwv timing chart2 start-up sequence (when operated with en= vcc condition) fig.49 start-up sequence diagram (when operated with en= vcc condition) downloaded from: http:///
datasheet d a t a s h e e t 25/44 tsz02201-0313aaf00430-1-2 ? 2013 rohm co., ltd. all rights reserved. 12.may.2015 rev.003 www.rohm.com tsz22111 ? 15 ? 001 bm81028amwv timing chart2 off sequence (when operated with en= vcc condition) fig.50 off sequence diagram (when o perated with en= vcc condition) downloaded from: http:///
datasheet d a t a s h e e t 26/44 tsz02201-0313aaf00430-1-2 ? 2013 rohm co., ltd. all rights reserved. 12.may.2015 rev.003 www.rohm.com tsz22111 ? 15 ? 001 bm81028amwv application example parts name value company parts number parts name value company parts number c1 0.1 [f] murata grm155r61h104ke14d c24 1[f] murata grm188b31c105ka92d c3 22[f] taiyo yuden emk316abj226kd-t c26 1[f] murata grm219b31h105ka73 c4 22[f] taiyo yuden emk316abj226kd-t c27 0.1[f] murata grm155r61h104ke14d c7 4.7[f] taiyo yuden lmk107bj475ka-t r3 10[ ] rohm mcr03ezpd c11 1[f] murata grm188b31c105ka92d r4 10[ ] rohm mcr03ezpd c15 10[f] taiyo yuden jmk107bj106ma-t r6 100[k ? ] rohm mcr03ezpd c16 4.7[f] taiyo yuden lmk107bj475ka-t d1 - rohm rb558w c17 10[f] taiyo yuden jmk107bj106ma-t l15 4.7[h] toko 1269as-h-4r7m c20 10[f] 2 taiyo yuden tmk316abj106kd-t l17 4.7[h] toko 1269as-h-4r7m c22 4.7[f] taiyo yuden lmk107bj475ka-t l19 4.7[h] toko 1276as-h-4r7m fig.51 application example downloaded from: http:///
datasheet d a t a s h e e t 27/44 tsz02201-0313aaf00430-1-2 ? 2013 rohm co., ltd. all rights reserved. 12.may.2015 rev.003 www.rohm.com tsz22111 ? 15 ? 001 bm81028amwv selecting application components ? selecting the output lc constant (buck converter : vdd1, vdd2) fig.52 inductor current waveform (buck converter : vdd) the output inductance (l) is decided by the rated current (i lr ) and maximum input current (i omax ) of the inductance. adjust so that i omax + ? i l / 2 does not reach the rated current value. ? i l can be obtained by the following equation. ? i l = 1 l (vin - vo) vo vin 1 f [a] where f is the switching frequency set with sufficient margin because the inductance value may have a dispersion of 3 0%. if the coil curr ent exceeds the rated current (i lr ), the ic may be damaged. the output capacitor (c o ) smoothens the ripple voltage at the output. select a capacitor that will regulate the ou tput ripple voltage within the specifications. output ripple voltage can be obtained by the following equation. ? vpp = ? i l r esr ? i l 2 co vo vin 1 f however, since the aforementione d conditions are based on a lot of factors, verify the results using the actual product. il t ilr i omax mean current i omax + should not reach the rated value level. S il 2 downloaded from: http:///
datasheet d a t a s h e e t 28/44 tsz02201-0313aaf00430-1-2 ? 2013 rohm co., ltd. all rights reserved. 12.may.2015 rev.003 www.rohm.com tsz22111 ? 15 ? 001 bm81028amwv ? selecting the output lc constant (boost converter : avdd) fig.53 inductor current waveform ( boost converter : avdd ) the output inductance (l) is decided by the rated current (i lr ) and maximum input current (i inmax ) of the inductance. adjust so that i inmax + ? i l / 2 does not reach the rated current value. ? i l can be obtained by the following equation. f vo vin vo vin l i l 1 1 ? ? ? ? [a] where f is the switching frequency set with sufficient margin because the inductance value may have a dispersion of 3 0%. if the coil curr ent exceeds the rated current (i lr ), the ic may be damaged. the output capacitor (c o ) smoothens the ripple voltage at the output. select a capacitor that will regulate the ou tput ripple voltage within the specifications. output ripple voltage can be obtained by the following equation. ? v pp = lmax r esr 1 f co vin vo ? ? ? ? i lmax ? i l 2 however, since the aforementione d conditions are based on a lot of factors, verify the results using the actual product. il t ilr i omax mean current i omax + should not reach the rated value level. S il 2 downloaded from: http:///
datasheet d a t a s h e e t 29/44 tsz02201-0313aaf00430-1-2 ? 2013 rohm co., ltd. all rights reserved. 12.may.2015 rev.003 www.rohm.com tsz22111 ? 15 ? 001 bm81028amwv serial transmission bd81028amwv uses the i 2 c bus in communicating with host addresses. the device/slave address is always followed by the 1 byte register/select address as shown in the i 2 c bus format below. start : start bit device address : consists of 8 bits in total (a6 to a0 and the r/w bit) (msb fast). if the r/w bit is h, this means read mode. if the r/w bit is l, this means write mode. ack : acknowledge bit. when sending and receiving data, there should be an acknowledge bit after each byte. if data is sent and received properly, l is replied to the sender. if data is not received properly, h is replied to the sender. register address : 1 byte select address. data : data byte. sending and receiving data (msb fast) stop : stop bit there are two writing modes from i 2 c bus to the registers, single mode and multi mode. in single mode, communication is sent to a single register. in multi mode, communication is sent to multiple re gisters by entering multiple data before the stop bit. device address slave address specific to the ic is 1000000 (a6 to a0). register address r7 is for test mode. normally, this should be set to 0. r6 and r5 are dont care bits. r4 to r0 are the register address bits. command interface transmission format for data sent and received to the eeprom is shown below. write operation ? pm i 2 c write format (register address: 01h to 08h) write data in multi mode by entering data continuously after the register address. data entry should be 8 bits. ? vcom i 2 c write format (register address: 09h) write data in single mode (vcom), designate a register address of 09h. read operation ? i 2 c read format read data in the pmic register through the read command. msb lsb msb lsb msb lsb a6 a5 a4 a3 a2 a1 a0 r7 r6 r5 r4 r3 r2 r1 r0 d7 d6 d5 d4 d3 d2 d1 d0 stop r/w ack ack register address data ack start device address r/w ack ack ack 100000000 0 0 stop 01h 08h start device address register address n-bytes data r/w ack ack ack 1 0 0 0 0 0 0 0 0 0 d7 d6 d5 d4 d3 d2 d1 d0 0 stop start device address register address data 09h r/w ack ack r/w ack ack 100000000 0 100000010 1 n-bytes data stop 01h 09h start device address register address repeated start device address downloaded from: http:///
datasheet d a t a s h e e t 30/44 tsz02201-0313aaf00430-1-2 ? 2013 rohm co., ltd. all rights reserved. 12.may.2015 rev.003 www.rohm.com tsz22111 ? 15 ? 001 bm81028amwv i 2 c timing fig.54. i 2 c timing ? timing specification parameter symbol normal mode fast mode unit min typ max min typ max sc l fre q uenc y f scl - - 100 - - 400 khz sclh time t high 4.0 - - 0.6 - - s scll time t low 4.7 - - 1.2 - - s rising time t r - - 1.0 - - 0.3 s falling time t f - - 0.3 - - 0.3 s start bit holding time t hd sta 4.0 - - 0.6 - - s start bit setup time t su sta 4.7 - - 0.6 - - s sda holding time t hd dat 200 - - 100 - - ns sda setup time t su dat 200 - - 100 - - ns acknowledge delay time t pd - - 0.9 - - 0.9 s acknowledge hold time t dh - 0.1 - - 0.1 - s stop bit setup time t su sto 4.7 - - 0.6 - - s bus open time t buf 4.7 - - 1.2 - - s noise spike width t l - 0.1 - - 0.1 - s ?? ?? % % % % % % % % % s: start bit p: stop bit downloaded from: http:///
datasheet d a t a s h e e t 31/44 tsz02201-0313aaf00430-1-2 ? 2013 rohm co., ltd. all rights reserved. 12.may.2015 rev.003 www.rohm.com tsz22111 ? 15 ? 001 bm81028amwv writing data to the register/eeprom after power up and when en is high, data can be written to the registers or the eeprom. the logic of the register address r4 will determine where the data will be written. check-sum is installed before writing data to prevent malfunctions caused by data error. the flowchart of the writing process to the register and eeprom is shown below. ? writing data to the register data is written to the registers when register address r4 is 0. avdd, vgh, vgl, havdd, and vcom (register address: 01h to 04h) output voltage can be changed by writing data to the registers. ? writing data to the eeprom data is written to the eeprom when register address r4 is 1. upon start-up and en is high, data which is stored in the eeprom is copied to the registers. therefore, by writing to the eeprom, the start-up settings will be changed. a ? ? ? ? _ a _ downloaded from: http:///
datasheet d a t a s h e e t 32/44 tsz02201-0313aaf00430-1-2 ? 2013 rohm co., ltd. all rights reserved. 12.may.2015 rev.003 www.rohm.com tsz22111 ? 15 ? 001 bm81028amwv automatic eeprom read function at start-up upon bd81028amwv start-up, a reset signal is generated and each register is initialized. after that, when en is changed from low to high, data wh ich is stored in the eeprom is copied to the registers. furthermore, the check-sum function is installed to prevent malfunctions caused by data error. the automatic eeprom read functi on at start-up is further explained by the flow chart below. check-sum data if data is written to the register and eeprom, it is necessary to set check-sum data to prevent malfunctions caused by data error. check-sum data is the compleme nt of the sum of all data. when check-sum data is added to the sum of all data, the result should be zero. return to normal operation after shutdown at check-sum error a check-sum of zero indicates a data error and this causes the pm ic to latch in shutdown. there are two ways to reactivate the pmic. first, write to the eeprom the correct data while the powe r supply is turned on and en=l; then toggle en to h. lastly, reset the power supply and enter the correct data while en=h. register address d7 d6 d5 d4 d3 d2 d1 d0 01h 01101000 02h 01011001 03h 01001110 d7 d6 d5 d4 d3 d2 d1 d0 d7 d6 d5 d4 d3 d2 d1 d0 04h 10000000 100101111 11010001 05h 00100000 06h 00000000 07h 00000000 08h 11010001 (check sum) cal total 00000000 (all data total including check sum) to become ? "0000_0000" ? (bin) ? when ? register ? 01h 08h ? is ?? totaled, check ? sum ? data ? is ?? determined. sum calculate ? the ? complement (bit reverse ? +1) downloaded from: http:///
datasheet d a t a s h e e t 33/44 tsz02201-0313aaf00430-1-2 ? 2013 rohm co., ltd. all rights reserved. 12.may.2015 rev.003 www.rohm.com tsz22111 ? 15 ? 001 bm81028amwv eeprom parameter setting register address bits function default resolution 01h 8 avdd output voltage setting 9.8v 0.1v [8v to 14.5v] 02h 8 vgh output voltage setting 18v 0.2v [13v to 26v] 03h 8 vgl output voltage setting -6.0v 0.1v [-9.5v to -4.0] 04h 8 havdd output voltage setting 4.23v 12.5mv 05h 8 vdd1 output voltage setting [3:0] vdd2 output voltage setting [6:4] vdd startup order setting [7] 1.8v 1.2v 0 0.05v [1.7 to 1.9, 2.4 to 2.6v] 0.05v [1.1v to 1.3v] 0 vdd1 2, 1 vdd2 1 06h 7 discharge time setting [2:0] delay1 time setting [5:3] dc/dc uvlo detect/release voltage [7:6] 0msec 0msec 2.5/2.7v 1msec [0 to 5msec] 1msec [0 to 5msec] 0.2v step 07h 7 delay2 time setting [2:0] delay3 time setting [6:3] frequency setting [7] 30msec 0msec 1200khz 5msec [0 to 40msec] 2msec [0 to 10msec] 0 600khz , 1 1200khz 08h 8 8 bit check-sum 42h 09h 8 vcom output voltage setting 2.1225v 12.5mv register map resister address d7 d6 d5 d4 d3 d2 d1 d0 01h avdd [7:0] 02h vgh [7:0] 03h vgl [7:0] 04h havdd [7:0] 05h seq[0] vdd2 [2:0] vdd1 [3:0] 06h uvlo[1:0] delay1 [2:0] dischg[2:0] 07h freq[0] delay3 [2:0] delay2 [3:0] 08h check sum[7:0] 09h vcom [7:0] downloaded from: http:///
datasheet d a t a s h e e t 34/44 tsz02201-0313aaf00430-1-2 ? 2013 rohm co., ltd. all rights reserved. 12.may.2015 rev.003 www.rohm.com tsz22111 ? 15 ? 001 bm81028amwv command table 1 a a a a a a a a a a [] [] [] [] [] [] [] [] [] [] [] [] [ ] downloaded from: http:///
datasheet d a t a s h e e t 35/44 tsz02201-0313aaf00430-1-2 ? 2013 rohm co., ltd. all rights reserved. 12.may.2015 rev.003 www.rohm.com tsz22111 ? 15 ? 001 bm81028amwv command table 2 a a a a a a a a a a [] [] [] [] [] [] [] [] [] [] [] [] [ ] downloaded from: http:///
datasheet d a t a s h e e t 36/44 tsz02201-0313aaf00430-1-2 ? 2013 rohm co., ltd. all rights reserved. 12.may.2015 rev.003 www.rohm.com tsz22111 ? 15 ? 001 bm81028amwv command table 3 a a a a a a a a a a [] [] [] [] [] [] [] [] [] [] [] [] [ ] downloaded from: http:///
datasheet d a t a s h e e t 37/44 tsz02201-0313aaf00430-1-2 ? 2013 rohm co., ltd. all rights reserved. 12.may.2015 rev.003 www.rohm.com tsz22111 ? 15 ? 001 bm81028amwv command table 4 a a a a a a a a a a [] [] [] [] [] [] [] [] [] [] [] [] [ ] downloaded from: http:///
datasheet d a t a s h e e t 38/44 tsz02201-0313aaf00430-1-2 ? 2013 rohm co., ltd. all rights reserved. 12.may.2015 rev.003 www.rohm.com tsz22111 ? 15 ? 001 bm81028amwv protection functions ? over-voltage protection avdd threshold (typ) 16v operation when ovp is detected, switching turns off to control the rising output voltage. when the output voltage decreases to a lower value, the switching will turn back on. ? short circuit protection vdd1 vdd2 avdd vgh vgl threshold (typ) vdd10.8 vdd20.8 avdd0.8 vgh0.8 vgl0.8 operation when a channel detects scp, a timer is activated. 10msec after that, all channels will be latched to shutdown state. to return to normal operation, reset the power supply. ? over-current protect vdd1 vdd2 avdd threshold (min) 1.0a 1.0a 1.5a operation when ocp is detected, switching turns off to limit the fet from generating current. when the fet current decreases to a lower value, the switching will turn back on. ? thermal shutdown vdd1 vdd2 avdd havdd vcom vgh vgl threshold (typ) 175 operation when device tem perature goes above 175 (typ), all channels are shut down. ? vcc uvlo vdd1 vdd2 avdd havdd vcom vgh vgl falling (typ) 2.4v rising (typ) 2.1v operation circuit malfunction is prevented by making sure the ic is turned off when vcc is below the uvlo threshold. there is a hysteresis between t he rising and falling threshold to avoid triggering uvlo by power supply noise. ? dc/dc converter uvlo vdd1 vdd2 avdd havdd vcom vgh vgl falling (typ) 2.5 / 2.7 / 2.9 / 3.1v rising (typ) 2.7 / 2.9 / 3.1 / 3.3 v watch start (typ) 2.8 / 3.0 / 3.2 / 3.4 v operation dc/dc converter output error is prevented by ma king sure all channels are turned off when a dc/dc converter output is below the uvlo threshold. downloaded from: http:///
datasheet d a t a s h e e t 39/44 tsz02201-0313aaf00430-1-2 ? 2013 rohm co., ltd. all rights reserved. 12.may.2015 rev.003 www.rohm.com tsz22111 ? 15 ? 001 bm81028amwv fault output the fault output indicates the status of the protection circuits of this ic. because fault is an open-drain output, place a pull-up resistor externally. when the fault output will not be used, connect to gnd. fig. 55 fault output fault=h during stable operation when none of t he protection circuits are in effect. this is due to the external pull-up resistance. fault=l when any of the protection circuits (uvl o, ocp, ovp, tsd, and scp) are triggered. this indicates a circuit error. the recommended external pull-up resistance for the fault output is 10k ? to 220k ? . an external resistance of under 10k ? can generate an offset voltage during fault=l caused by the voltage drop across the internal on resistance. on the other hand, an external resistance of more than 220k ? can interfere with the output during fault=h because of leak current. fault 10k ? to 220k ? downloaded from: http:///
datasheet d a t a s h e e t 40/44 tsz02201-0313aaf00430-1-2 ? 2013 rohm co., ltd. all rights reserved. 12.may.2015 rev.003 www.rohm.com tsz22111 ? 15 ? 001 bm81028amwv i/o equivalent circuits 1.drn, 28. drp 2.avddp 3.havdd, 4.vcom 6.fault 7.vcc 8.scl 9.sda 10.en 11.vreg 12.vdd2, 13.vdd1 15.swb1, 17.swb2 16.pvcc1, 22.pvcc2 downloaded from: http:///
datasheet d a t a s h e e t 41/44 tsz02201-0313aaf00430-1-2 ? 2013 rohm co., ltd. all rights reserved. 12.may.2015 rev.003 www.rohm.com tsz22111 ? 15 ? 001 bm81028amwv 19.sw 20.avdd 21.avdd_s 23.vlso 24.vgl 26.vgh, 27cpp downloaded from: http:///
datasheet d a t a s h e e t 42/44 tsz02201-0313aaf00430-1-2 ? 2013 rohm co., ltd. all rights reserved. 12.may.2015 rev.003 www.rohm.com tsz22111 ? 15 ? 001 bm81028amwv ? operational notes 1) absolute maximum ratings operating the ic over the absolute maximum ratings may dama ge the ic. in addition, it is impossible to predict all destructive situations such as short-circuit modes, open circuit modes, etc. therefore, it is important to consider circuit protection measures, like adding a fuse, in case the ic is operated in a special mode exceeding the absolute maximum ratings. 2) ground potential the voltage of the ground pin must be the lo west voltage of all pins of the ic at all operating c onditions. ensure that no pins are at a voltage below the ground pin at any time, even during transient condition. 3) thermal consideration use a thermal design that allows for a sufficient margin by taking into account the permissible power dissipation (pd) in actual operating conditions. 4) short between pins and mounting errors be careful when mounting the ic on printed circuit boards. t he ic may be damaged if it is mounted in a wrong orientation or if pins are shorted together. short circuit may be caused by conductive particles caught between the pins. 5) operation under strong electromagnetic field operating the ic in the presence of a strong electromagnetic field may cause the ic to malfunction. 6) testing on application boards when testing the ic on an application boar d, connecting a capacitor directly to a low-impedance output pin may subject the ic to stress. always discharge capacito rs completely after each process or step. the ics power supply should always be turned off completely before connecting or removing it from the test setup during the inspection process. to prevent damage from static discharge, ground the ic during assembly and use similar precautions during transport and storage. 7) regarding input pins of the ic this monolithic ic contains p+ isolatio n and p substrate layers between adjacent el ements in order to keep them isolated. p-n junctions are formed at the intersection of the p layers wi th the n layers of other elem ents, creating a parasitic diode or transistor. for example (refer to figure below): when gnd > pin a and gnd > pin b, the p-n junction operates as a parasitic diode. when gnd > pin b, the p-n junction operates as a parasitic transistor. parasitic diodes inevitably occur in the structure of the ic. the op eration of parasitic diodes can result in mutual interference among circuits, operational faults, or physical damage. therefore, conditions that cause these diodes to operate, such as applying a voltage lower than the gnd voltage to an input pin (and thus to the p substrate) should be avoided. 8) over-current prot ection circuit (ocp) the ic incorporates an over-current protecti on circuit that operates in accordance with the rated output capacity. this circuit protects the ic from damage when the load becomes shorted. it is also design ed to limit the output current (without latching) in the event of a large transient current flow, such as from a large capacitor or other component connected to the output pin. this protection circuit is effective in preventing damage to the ic in cases of sudden and unexpected current surges. the ic should not be used in applications where the ov er current protection circuit will be activated continuously. 9) thermal shutdown circuit (tsd) the ic incorporates a built-in thermal shutdown circuit, which is designed to turn off the ic when the internal temperature of the ic reaches a specified value. it is not designed to protect the ic from damage or guarantee its operation. do not continue to operate the ic after this func tion is activated. do not use the ic in conditions where this function will always be activated. 10) dc/dc switching line wiring pattern dc/dc converter switching line (wiring fr om the switching pin to inductor, nch mo s) must be as short and thick as possible to reduce line impedance. if the wiring is long, ringing caus ed by switching would increase and this may exceed the absolute maximum voltage ratings. if the parts are located far apart, consider inserting a snubber circuit. resistor transistor (npn) n n n p + p + p p substrate gnd parasitic element pin a n n p + p + p p substrate gnd parasitic element pin b c b e n gnd pin a pin b other adjacent elements e b c gnd parasitic element parasitic element example of a simple monolithic ic structure downloaded from: http:///
datasheet d a t a s h e e t 43/44 tsz02201-0313aaf00430-1-2 ? 2013 rohm co., ltd. all rights reserved. 12.may.2015 rev.003 www.rohm.com tsz22111 ? 15 ? 001 bm81028amwv ordering information b m 8 1 0 2 8 a m w v ze2 part number package mwv: uqfn28v4040a packaging and forming specification ze2: embossed tape and reel physical dimension tape and reel information marking diagram (top view) ? order quantity needs to be multiple of the minimum quantity. embossed carrier tape tapequantity direction of feed the direction is the 1pin of product is at the upper left when you hold reel on the left hand and you pull out the tape on the right hand 2000pcs e2 () direction of feed reel 1pin ze2 uqfn28v4040a (top view) 81028 a part number marking lot numbe r 1pin mark downloaded from: http:///
datasheet d a t a s h e e t 44/44 tsz02201-0313aaf00430-1-2 ? 2013 rohm co., ltd. all rights reserved. 12.may.2015 rev.003 www.rohm.com tsz22111 ? 15 ? 001 bm81028amwv modification record rev.001 - original rev.002 p.1 change input voltage rang e, add input tolerant p. 5 change recommended operating ratings (power supply voltage, swb1,swb2 current, sw current ) rev.003 p. 1 , p. 4 3 change package name p.26 clerical error correction (d1) downloaded from: http:///
datasheet d a t a s h e e t notice-pga-e rev.001 ? 2015 rohm co., ltd. all rights reserved. notice precaution on using rohm products 1. our products are designed and manufac tured for application in ordinary elec tronic equipments (such as av equipment, oa equipment, telecommunication equipment, home electroni c appliances, amusement equipment, etc.). if you intend to use our products in devices requiring ex tremely high reliability (such as medical equipment (note 1) , transport equipment, traffic equipment, aircraft/spacecra ft, nuclear power controllers, fuel c ontrollers, car equipment including car accessories, safety devices, etc.) and whose malfunction or failure may cause loss of human life, bodily injury or serious damage to property (specific applications), please consult with the rohm sale s representative in advance. unless otherwise agreed in writing by rohm in advance, rohm shall not be in any way responsible or liable for any damages, expenses or losses incurred by you or third parties arising from the use of any ro hms products for specific applications. (note1) medical equipment classification of the specific applications japan usa eu china class class class b class class class 2. rohm designs and manufactures its products subject to strict quality control system. however, semiconductor products can fail or malfunction at a certain rate. please be sure to implement, at your own responsibilities, adequate safety measures including but not limited to fail-safe desi gn against the physical injury, damage to any property, which a failure or malfunction of our products may cause. the following are examples of safety measures: [a] installation of protection circuits or other protective devices to improve system safety [b] installation of redundant circuits to reduce the impact of single or multiple circuit failure 3. our products are designed and manufactured for use under standard conditions and not under any special or extraordinary environments or conditio ns, as exemplified below. accordin gly, rohm shall not be in any way responsible or liable for any damages, expenses or losses arising from the use of an y rohms products under any special or extraordinary environments or conditions. if you intend to use our products under any special or extraordinary environments or conditions (as exemplified below), your independent verification and confirmation of product performance, reliability, etc, prior to use, must be necessary: [a] use of our products in any types of liquid, incl uding water, oils, chemicals, and organic solvents [b] use of our products outdoors or in places where the products are exposed to direct sunlight or dust [c] use of our products in places where the products ar e exposed to sea wind or corrosive gases, including cl 2 , h 2 s, nh 3 , so 2 , and no 2 [d] use of our products in places where the products are exposed to static electricity or electromagnetic waves [e] use of our products in proximity to heat-producing components, plastic cords, or other flammable items [f] sealing or coating our products with resin or other coating materials [g] use of our products without cleaning residue of flux (ev en if you use no-clean type fluxes, cleaning residue of flux is recommended); or washing our products by using water or water-soluble cleaning agents for cleaning residue after soldering [h] use of the products in places subject to dew condensation 4. the products are not subjec t to radiation-proof design. 5. please verify and confirm characteristics of the final or mounted products in using the products. 6. in particular, if a transient load (a large amount of load applied in a short per iod of time, such as pulse. is applied, confirmation of performance characteristics after on-boar d mounting is strongly recomm ended. avoid applying power exceeding normal rated power; exceeding the power rating under steady-state loading c ondition may negatively affect product performance and reliability. 7. de-rate power dissipation (pd) depending on ambient temper ature (ta). when used in seal ed area, confirm the actual ambient temperature. 8. confirm that operation temperat ure is within the specified range described in the product specification. 9. rohm shall not be in any way responsible or liable for fa ilure induced under deviant condi tion from what is defined in this document. precaution for mounting / circuit board design 1. when a highly active halogenous (chlori ne, bromine, etc.) flux is used, the resi due of flux may negatively affect product performance and reliability. 2. in principle, the reflow soldering method must be used on a surface-mount products, the flow soldering method must be used on a through hole mount products. if the flow sol dering method is preferred on a surface-mount products, please consult with the rohm representative in advance. for details, please refer to rohm mounting specification downloaded from: http:///
datasheet d a t a s h e e t notice-pga-e rev.001 ? 2015 rohm co., ltd. all rights reserved. precautions regarding application examples and external circuits 1. if change is made to the constant of an external circuit, pl ease allow a sufficient margin considering variations of the characteristics of the products and external components, including transient characteri stics, as well as static characteristics. 2. you agree that application notes, re ference designs, and associated data and in formation contained in this document are presented only as guidance for products use. theref ore, in case you use such information, you are solely responsible for it and you must exercise your own indepen dent verification and judgment in the use of such information contained in this document. rohm shall not be in any way responsible or liable for any damages, expenses or losses incurred by you or third parties arising from the use of such information. precaution for electrostatic this product is electrostatic sensitive product, which may be damaged due to electrostatic discharge. please take proper caution in your manufacturing process and storage so that voltage exceeding t he products maximum rating will not be applied to products. please take special care under dry condit ion (e.g. grounding of human body / equipment / solder iron, isolation from charged objects, se tting of ionizer, friction prevention and temperature / humidity control). precaution for storage / transportation 1. product performance and soldered connections may deteriora te if the products are stor ed in the places where: [a] the products are exposed to sea winds or corros ive gases, including cl2, h2s, nh3, so2, and no2 [b] the temperature or humidity exceeds those recommended by rohm [c] the products are exposed to di rect sunshine or condensation [d] the products are exposed to high electrostatic 2. even under rohm recommended storage c ondition, solderability of products out of recommended storage time period may be degraded. it is strongly recommended to confirm sol derability before using products of which storage time is exceeding the recommended storage time period. 3. store / transport cartons in the co rrect direction, which is indicated on a carton with a symbol. otherwise bent leads may occur due to excessive stress applied when dropping of a carton. 4. use products within the specified time after opening a humidity barrier bag. baking is required before using products of which storage time is exceeding the recommended storage time period. precaution for product label qr code printed on rohm products label is for rohms internal use only. precaution for disposition when disposing products please dispose them proper ly using an authorized industry waste company. precaution for foreign exchange and foreign trade act since concerned goods might be fallen under listed items of export control prescribed by foreign exchange and foreign trade act, please consult with rohm in case of export. precaution regarding intellectual property rights 1. all information and data including but not limited to application example contained in this document is for reference only. rohm does not warrant that foregoi ng information or data will not infringe any intellectual property rights or any other rights of any third party regarding such information or data. 2. rohm shall not have any obligations where the claims, actions or demands arising from the co mbination of the products with other articles such as components, circuits, systems or external equipment (including software). 3. no license, expressly or implied, is granted hereby under any intellectual property rights or other rights of rohm or any third parties with respect to the products or the informati on contained in this document. pr ovided, however, that rohm will not assert its intellectual property rights or other rights against you or your customers to the extent necessary to manufacture or sell products containing the produc ts, subject to the terms and conditions herein. other precaution 1. this document may not be reprinted or reproduced, in whol e or in part, without prior written consent of rohm. 2. the products may not be disassembled, converted, modified, reproduced or otherwise changed without prior written consent of rohm. 3. in no event shall you use in any wa y whatsoever the products and the related technical information contained in the products or this document for any military purposes, incl uding but not limited to, the development of mass-destruction weapons. 4. the proper names of companies or products described in this document are trademarks or registered trademarks of rohm, its affiliated companies or third parties. downloaded from: http:///
datasheet datasheet notice C we rev.001 ? 201 5 rohm co., ltd. all rights reserved. general precaution 1. before you use our pro ducts, you are requested to care fully read this document and fully understand its contents. rohm shall n ot be in an y way responsible or liabl e for fa ilure, malfunction or acci dent arising from the use of a ny rohms products against warning, caution or note contained in this document. 2. all information contained in this docume nt is current as of the issuing date and subj ec t to change without any prior notice. before purchasing or using rohms products, please confirm the la test information with a rohm sale s representative. 3. the information contained in this doc ument is provi ded on an as is basis and rohm does not warrant that all information contained in this document is accurate an d/or error-free. rohm shall not be in an y way responsible or liable for an y damages, expenses or losses incurred b y you or third parties resulting from inaccur acy or errors of or concerning such information. downloaded from: http:///

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