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RT9465 ? ds9465-00 may 2017 www.richtek.com 1 ? copyright 2017 richtek technology corporation. all rights reserved. is a registered trademark of ric htek technology corporation. marking information ordering information note : richtek products are : ? rohs compliant and compatible with the current require- ments of ipc/jedec j-std-020. ? suitable for use in snpb or pb-free soldering processes. 3a single cell li-on battery slave switching charger general description the RT9465 is a switch-mode single cell li-ion/li-polymer battery charger for portable applications. it integrates a synchronous pwm controller, and high accuracy voltage regulation. besides, the charging current is regulated through the integrated sensing resistors. the RT9465 optimizes the charging task by using a control algorithm to vary the charge rate via different modes, including fast charge mode, and constant voltage mode. the key charge parameters are programmable via the i 2 c interface. the junction temperature is monitored by i 2 c. other features include under-voltage protection, over- voltage protection (including v bat and v bus side), thermal regulation and reverse leakage protection and mivr. the RT9465 is available in a wqfn-16l 3x3 package. package type qw : wqfn-16l 3x3 (w-type) RT9465 lead plating system g : green (halogen free and pb free) features ? ? ? ? ? input voltage range : 3.9v to 14v ? ? ? ? ? synchronous 1.5mhz/0.75mhz switching frequency 95% max. duty ? ? ? ? ? up to 92%/94% peak efficiency at vin = 9v/5v ? ? ? ? ? vin over-voltage protection : 14.5v ? ? ? ? ? vin under-voltage protection : 3.8v ? ? ? ? ? vin under-voltage-lock-out : 3.3v ? ? ? ? ? fault detection (vin and vbat monitoring) ? ? ? ? ? int output for communication with i 2 c ? ? ? ? ? programmable minimum input voltage range : 3.9v to 13.4v (0.1v/step) ? ? ? ? ? programmable battery voltage regulation range : 3.8v to 5.06v (0.02v/step) ? ? ? ? ? programmable end of charge range : 0.6a to 1.6a (0.1a/step) ? ? ? ? ? programmable average output current regulation range : 0.6a to 3a (0.1a/step) ? ? ? ? ? junction temperature monitor : 60 c to 116 c (4 c/ step) ? ? ? ? ? vin minimum input voltage regulation (mivr) : 3% ? ? ? ? ? battery cv (constant voltage) regulation : 1% ? ? ? ? ? output cc (constant current) regulation, output current < 1a : 100ma (vbus = 9v/12v) ? ? ? ? ? output cc (constant current) regulation, output current > 1a : 10% (vbus = 9v/12v) ? ? ? ? ? junction temperature monitor : 3 c ? ? ? ? ? thermal shutdown : 160 c applications ? cellular telephones ? personal information appliances ? tablet pc, power bank ? portable instruments k7=ym dnn k7= : product code ymdnn : date code
RT9465 2 ds9465-00 may 2017 www.richtek.com ? copyright 2017 richtek technology corporation. all rights reserved. is a registered trademark of ric htek technology corporation. functional pin description pin no. pin name pin function 1, 2 vin power input. 3 reg pwm low side driver and bootstrap power supply. 4 sda data input for i 2 c. 5 scl data input for i 2 c. 6 en device enable control pin. pull low to disable device. 7 int open drain. interrupt signal to host. 8 bat- negative battery voltage sense. 9 bat+ positive battery voltage sense. 10, 17 (exposed pad) agnd analog ground. the exposed pad must be soldered to a large pcb and connected to agnd for maximum thermal dissipation 11, 12 pgnd power ground. 13, 14, 15 sw switch node. connect to an external inductor 16 boot bootstrap supply for high-side mosfet. connect a capacitor between boot and sw. pin configuration (top view) wqfn-16l 3x3 sda reg vin vin pgnd pgnd bat+ agnd scl int en bat- boot sw sw sw 12 11 10 9 13 14 15 16 1 2 3 4 8 7 6 5 17 agnd
RT9465 3 ds9465-00 may 2017 www.richtek.com ? copyright 2017 richtek technology corporation. all rights reserved. is a registered trademark of ric htek technology corporation. typical application circuit reference q'ty part number description package manufacturer c in_s 1 grm155r61e225ke11 2.2 ? f/25v/x5r 0402 murata c reg_s 1 grm155r60j475me47 4.7 ? f/6.3v/x5r 0402 murata c bt_s 1 grm033r61c473ke84 47nf/16v/x5r 0201 murata c out 1 grm188r61a106ke69 10 ? f/10v/x5r 0603 murata l1 1 dfe252012f 1 ? h 2.5x2.0x1.2 toko u1 1 RT9465 chip wqfn-16l 3x3 richtek table 1. component list of evaluation board note 1. the total c in of slave charger between pmid pin of main charger is 10 f at least. agnd vin RT9465 (slave charger) boot bat+ pgnd en sw reg bat- int scl sda v sys agnd vbus 3.9v to 14v vbus rt9466 (main charger) l1 1h boot pgnd ceb sw reg c sys 10f int scl sda scl sda enb irq_m c reg_m 4.7f c bt_m 47nf vmid bat c bat 10f qon qon ts v reg_s vmid pgood stat pgood gpio v out sys c in 2.2f + c reg_s 4.7f l2 1h c bt_s 47nf c out 10f 11, 12 10, 17 (exposed pad) 9 13, 14, 15 16 3 4 8 7 6 5 c in_s 2.2f irq_s v reg_m v sys v reg_m c in _1 4.7f note : the total c in of slave charger between pmid pin of main charger is 10f at least. c in _2 4.7f c sys 10f
RT9465 4 ds9465-00 may 2017 www.richtek.com ? copyright 2017 richtek technology corporation. all rights reserved. is a registered trademark of ric htek technology corporation. functional block diagram en int vin digital control i 2 c control protection scl sda q2 q3 sw pgnd bat+ bat- reg boot ovp/ uvp oscillator pre-regulator junction temperature monitoring controller agnd battery monitoring
RT9465 5 ds9465-00 may 2017 www.richtek.com ? copyright 2017 richtek technology corporation. all rights reserved. is a registered trademark of ric htek technology corporation. electrical characteristics recommended operating conditions (note 5) ? supply input voltage ---------------------------------------------------------------------------------------------------- 3.9v to 14v ? junction temperature range ------------------------------------------------------------------------------------------ ? 40 c to 125 c ? ambient temperature range ------------------------------------------------------------------------------------------ ? 40 c to 85 c absolute maximum ratings (note 2) ? supply input voltage ---------------------------------------------------------------------------------------------------- ? 0.3v to 22v ? boot ----------------------------------------------------------------------------------------------------------------------- ? 0.3v to 22v ? sw -------------------------------------------------------------------------------------------------------------------------- ? 0.3v to 20v ? mid ? vin, boot ? sw ---------------------------------------------------------------------------------------------- ? 0.3v to 6v ? others ---------------------------------------------------------------------------------------------------------------------- ? 0.3v to 6v ? power dissipation, p d @ t a = 25 c wqfn-16l 3x3 ----------------------------------------------------------------------------------------------------------- 3.33w ? package thermal resistance (note 3) wqfn-16l 3x3, ja ----------------------------------------------------------------------------------------------------- 30 c/w wqfn-16l 3x3, jc ----------------------------------------------------------------------------------------------------- 7.5 c/w ? lead temperature (soldering, 10sec.) ------------------------------------------------------------------------------ 260 c ? junction temperature --------------------------------------------------------------------------------------------------- 150 c ? storage temperature range ------------------------------------------------------------------------------------------- ? 65 c to 150 c ? esd susceptibility (note 4) hbm (human body model) -------------------------------------------------------------------------------------------- 2kv parameter symbol test conditions min typ max unit quiescent current vin supply current i (vin)_sw pwm is switching, v in = 5v, v bat+ = 3.8v -- 8 -- ma i (vin)_sw pwm is switching, v in = 9v, v bat+ = 3.8v -- 28 -- i (vin)_no_sw pwm is non-switching, v in = 5v, v bat+ = 4.4v -- -- 2 leakage current from battery i bat_leak charger disable, v bat = 3.8v -- -- 1 ? a vin/vbat power up vin under-voltage protection v uvp -- 3.8 -- v vin under-voltage protection hysteresis v uvp_hys -- 150 -- mv input power regulation input voltage regulation range v mivr i 2 c programmable per 0.1v 3.9 -- 13.4 v (v in = 5v, v bat = 4.2v, l = 1 h, c in = 10 f, c bats = 10 f, t a = 25 c, unless otherwise specified)
RT9465 6 ds9465-00 may 2017 www.richtek.com ? copyright 2017 richtek technology corporation. all rights reserved. is a registered trademark of ric htek technology corporation. parameter symbol test conditions min typ max unit v mivr accuracy v mivr_acc mivr = 4.4v, 9v ? 3 -- 3 % protection v in ic active threshold voltage v uvlo v in rising 3.05 3.3 3.55 v ic active hysteresis v uvlo_hys v in falling from uvlo -- 150 -- mv v in ovp threshold voltage v inovp v in rising 13.5 14.5 15.5 v vin ovp hysteresis v inovp_hys -- 350 -- mv v bat battery ovp v batovp (v batovp_rising - v cv )/v cv 102 104 106 % battery uvp v batuvp v bat falling 2.3 2.4 2.5 v thermal protection over-temperature protection otp thermal shutdown -- 160 -- o c otp hysteresis otp_hys -- 10 -- o c thermal regulation threshold tr charge current begins to reduce -- 120 -- o c battery charging interval end of charge battery voltage regulation v oreg i 2 c programmable per 20mv 3.8 -- 5.06 v battery voltage accuracy v oreg_ acc temperature = 0 to 85 o c ? 1 -- 1 % fast charge charging current i chrg i 2 c programmable per 0.1a 0.6 -- 3 a i chg accuracy i chrg_ acc v in = 5v, charge current > 1a ? 15 -- 15 % v in = 9v, 12v, charge current > 1a ? 10 -- 10 v in = 5v, charge current < 1a ? 150 ? -- 150 ma v in = 9v, 12v, charge current < 1a ? 100 ? -- 100 end of charging current i eoc i 2 c programmable per 0.1a 0.6 -- 1.6 a i eoc accuracy i eoc_ acc v in = 5v, 9v, 12v, i eoc setting > 1a ? 15 -- 15 % v in = 5v, 9v, 12v, i eoc setting < 1a ? 150 -- 150 ma battery charger high side on-resistance r on(uug+ug) from v in to sw -- 30 -- m ? low side on-resistance r on(lg) from sw to pgnd -- 30 -- m ? charging efficiency v in = 9v, v bat = 3.8v, and i chg2 = 2.5a -- 89.5 -- % switching frequency (1.5mhz) f osc1 i 2 c programmable 1.5 mhz -- 1.5 -- mhz switching frequency (750khz) f osc2 i 2 c programmable 0.75mhz -- 0.75 -- mhz
RT9465 7 ds9465-00 may 2017 www.richtek.com ? copyright 2017 richtek technology corporation. all rights reserved. is a registered trademark of ric htek technology corporation. parameter symbol test conditions min typ max unit frequency accuracy 10 -- 10 % maximum duty cycle at minimum voltage input -- 95 -- % minimum duty cycle 0 -- -- % v reg regulation v reg v in = 5v -- 4.9 -- v en pull low r en -- 500 -- k ? i 2 c characteristics output low voltage v ol i ds = 10ma -- -- 0.4 v scl, sda input logic high threshold voltage v ih 1.3 -- -- v scl, sda input logic low threshold voltage v il -- -- 0.4 v scl clock -- -- 400 khz load capacitance c load v pull_up = 1.8v -- -- 1 pf control i/o pin en input threshold voltage v ih logic high threshold 1.2 -- -- v en input threshold voltage v il logic low threshold -- -- 0.4 v device turn-on delay time after en pull-high -- -- 500 ? s note 2. stresses beyond those listed ? absolute maximum ratings ? may cause permanent damage to the device. these are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. exposure to absolute maximum rating conditions may affect device reliability. note 3. ja is measured under natural convection (still air) at t a = 25 c with the component mounted on a high effective- thermal-conductivity four-layer test board on a jedec 51-7 thermal measurement standard. jc is measured at the exposed pad of the package. note 4. devices are esd sensitive. handling precaution is recommended. note 5. the device is not guaranteed to function outside its operating conditions.
RT9465 8 ds9465-00 may 2017 www.richtek.com ? copyright 2017 richtek technology corporation. all rights reserved. is a registered trademark of ric htek technology corporation. typical operating characteristics cv vs. temperature 4.10 4.15 4.20 4.25 4.30 4.35 4.40 4.45 4.50 -50 -25 0 25 50 75 100 125 temperature (c) cv (v) charging current vs. vbat 0.950 0.975 1.000 1.025 1.050 1.075 1.100 1.125 1.150 3.3 3.4 3.5 3.6 3.7 3.8 3.9 4.0 4.1 4.2 4.3 4.4 vbat (v) charging current (a ) vbus = 9v vbus = 12v vbus = 7v vbus = 5v i cc = 1a cv set = 4.44v cv set = 4.36v cv set = 4.2v efficiency vs. i out 40 50 60 70 80 90 100 0.00.51.01.52.02.53.0 i out (a) efficiency (%) efficiency vs. i out 40 50 60 70 80 90 100 0.0 0.5 1.0 1.5 2.0 2.5 3.0 i out (a) efficiency (%) i cc = 0.6a, cv set = 3.8v i cc = 1a, cv set = 4.2v vbus = 5v vbus = 9v vbus = 12v vbus = 5v vbus = 9v vbus = 12v )
RT9465 9 ds9465-00 may 2017 www.richtek.com ? copyright 2017 richtek technology corporation. all rights reserved. is a registered trademark of ric htek technology corporation. application information junction temperature monitor the RT9465 supports a junction temperature monitor to optimize the charge current for applications. the monitoring is split in to 16 levels from a 4-bit adc to i 2 c register as shown in table 2. in addition, the RT9465 provides two programmable monitoring levels by i 2 c serial interface to report the temperature warning and release flags, t j_warning and t j_release as shown in table 2. if the junction temperature rises above the warning threshold (t j_warning ), the event is asserted to an interrupt. if the junction temperature falls under the release threshold (t j_release ), the event is asserted to an interrupt. table 2. reported register temperature 0000 < 60 degree (t j_release default) 0001 > 60 degree 0010 > 64 degree 0011 > 68 degree (t j_warning default) 0100 > 72 degree 0101 > 76 degree 0110 > 80 degree 0111 > 84 degree 1000 > 88 degree 1001 > 92 degree 1010 > 96 degree 1111 > 100 degree 1100 > 104 degree 1101 > 108 degree 1110 > 112 degree 1111 > 116 degree minimum input voltage regulation (mivr) : the RT9465 features input voltage mivr function to prevent input voltage drop due to insufficient current provided by the adaptor or usb input. if mivr function is enabled, the input voltage decreases when the over-current of the input power source occurs and is regulated at a predetermined voltage level which can be set from 3.9v to 13.4v with the step of 100mv by i 2 c interface to mivr register. average output current regulation (aocr) : the RT9465 proposed output current aocr function to limit charge current. the aocr senses and averages the inductor current in to the regulation loop for constant current charge. if aocr function is enabled, the output current increase when the over-current of the charge occurs and is regulated at a predetermined current level which can be set from 0.6a to 3a with the step of 100ma by i 2 c interface to aocr register.
RT9465 10 ds9465-00 may 2017 www.richtek.com ? copyright 2017 richtek technology corporation. all rights reserved. is a registered trademark of ric htek technology corporation. i 2 c register information i 2 c slave address : 1001011 (4bh) register address description bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0 0x00 system1 rst_reg reserved reserved reserved reserved reserved reserved reserved reset value 0 0 0 0 0 0 0 0 read/ write/ clear r/w r/w r/w r/w r/w r/w r/w r/w register address description bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0 0x01 system2 chg_en reserved reserved reserved irq_pulse reserved reserved reserved reset value 0 1 0 0 0 0 0 0 read/ write/ clear r/w r/w r/w r/w r/w r/w r/w r/w register address description bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0 0x02 clock sel_swfr eq fixfrq oscss_ en reserved reserved reserved reserved reserved reset value 0 0 0 0 0 0 0 0 read/ write/ clear r/w r/w r/w r/w r/w r/w r/w r/w register address description bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0 0x03 cv voreg[5:0] reserved reserved reset value 0 1 0 1 0 0 0 0 read/ write/ clear r/w r/w r/w r/w r/w r/w r/w r/w
RT9465 11 ds9465-00 may 2017 www.richtek.com ? copyright 2017 richtek technology corporation. all rights reserved. is a registered trademark of ric htek technology corporation. register address description bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0 0x04 th threg[1:0] reserved reserved reserved reserved reserved reserved reset value 1 1 0 0 0 0 0 0 read/ write/ clear r/w r/w r/w r/w r/w r/w r/w r/w register address description bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0 0x05 mivr vmivr[6:0] vmivr_en reset value 0 0 0 0 1 0 1 1 read/ write/ clear r/w r/w r/w r/w r/w r/w r/w r/w register address description bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0 0x06 cc ichg[4:0] reserved reserved reserved reset value 1 0 1 0 0 0 0 0 read/ write/ clear r/w r/w r/w r/w r/w r/w r/w r/w register address description bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0 0x07 eoc1 ieoc[3:0] eoc_en chg_tdeg_eoc[2:0] reset value 0 1 0 1 1 1 0 0 read/ write/ clear r/w r/w r/w r/w r/w r/w r/w r/w register address description bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0 0x08 eoc2 te eoc_timer[1:0] reserved reserved reserved reserved reserved reset value 0 0 0 0 0 0 0 0 read/ write/ clear r/w r/w r/w r/w r/w r/w r/w r/w register address description bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0 0x09 timing wt_fc[2:0] tmr2x_ en tmr_en tmr_ pause reserved reserved reset value 0 0 0 0 0 0 0 0 read/ write/ clear r/w r/w r/w r/w r/w r/w r/w r/w
RT9465 12 ds9465-00 may 2017 www.richtek.com ? copyright 2017 richtek technology corporation. all rights reserved. is a registered trademark of ric htek technology corporation. register address description bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0 0x0a wdt wdt_e n wdt_ trst wdt[1:0] reserved reserved reserved reserved reset value 0 1 0 1 0 0 0 0 read/ write/ clear r/w r/w r/w r/w r/w r/w r/w r/w register address description bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0 0x0c adc1 adc_rpt[3:0] temp_e n temp_ avg reserved reserved reset value 0 0 0 0 1 0 0 0 read/ write/ clear r r r r r/w r/w r/w r/w register address description bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0 0x0d adc2 adc_high[3:0] adc_offset[3:0] reset value 0 0 1 1 0 0 0 0 read/ write/ clear r/w r/w r/w r/w r/w r/w r/w r/w register address description bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0 0x20 chg1 chg_stat reserved reserved version[2:0] trimdo ne reset value 1 1 0 0 0 0 0 0 read/ write/ clear r r r/w r/w r r r r ?
RT9465 13 ds9465-00 may 2017 www.richtek.com ? copyright 2017 richtek technology corporation. all rights reserved. is a registered trademark of ric htek technology corporation. register address description bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0 0x30 chg1 pwr_ rdy chg_ mivr chg_ treg reserved reserved reserved reserved reserved reset value 0 0 0 0 0 0 0 0 read/ write/ clear r r r r r r r r register address description bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0 0x31 chg2 chg_ vinov chg_ vbatuv chg_ vbatov reserved reserved reserved reserved reserved reset value 0 0 0 0 0 0 0 0 read/ write/ clear r/c r/c r/c r/w r/w r/w r/w r/w register address description bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0 0x32 irq1 otpi chg_ adpbadi chg_ tmri temp_h temp_l reserved chg_ statci chg_ faulti reset value 0 0 0 0 0 0 0 0 read/ write/ clear r/c r/c r/c r/c r/c r/w r/c r/c register address description bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0 0x33 irq2 chg_ ieoci chg_ termi ssfinishi wdtmri reserved reserved reserved reserved reset value 0 0 0 0 0 0 0 0 read/ write/ clear r/c r/c r/c r/c r/w r/w r/w r/w register address description bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0 0x40 chg mask1 pwr_ rdym chg_ mivrm chg_ tregm otpim chg_sv busovm chg_sv busuvm chg_sv batovm chg_sv batuvm reset value 0 0 0 0 0 0 0 0 read/ write/ clear r/w r/w r/w r/w r/w r/w r/w r/w
RT9465 14 ds9465-00 may 2017 www.richtek.com ? copyright 2017 richtek technology corporation. all rights reserved. is a registered trademark of ric htek technology corporation. register address description bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0 0x41 chg mask2 chg_ vinov m chg_ vbatuv m chg_ vbatov m reserved reserved reserved reserved reserved reset value 1 1 1 0 0 0 0 0 read/ write/ clear r/w r/w r/w r/w r/w r/w r/w r/w register address description bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0 0x42 irqmask 1 otpm chg_ adpba dm chg_ tmrm temp_ hm temp_ lm reserved chg_ statcm chg_ faultm reset value 1 1 1 1 1 1 1 1 read/ write/ clear r/w r/w r/w r/w r/w r/w r/w r/w register address description bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0 0x43 irqmask 2 chg_ ieocim chg_ termim ssfinish im wdtmrim reserved reserved reserved reserved reset value 1 1 1 1 1 1 1 1 read/ write/ clear r/w r/w r/w r/w r/w r/w r/w r/w name function addr reset chg_ctrl0 system1 0x00 0x00 bit type name reset value description 7 r/w rst_reg 0 all registers reset bit. 0 : don't reset all registers. 1 : reset all registers. (notice : this bit will be reset to "0" after reset procedure finish) [6:0] r/w reserved 0000000 reserved
RT9465 15 ds9465-00 may 2017 www.richtek.com ? copyright 2017 richtek technology corporation. all rights reserved. is a registered trademark of ric htek technology corporation. name function addr reset chg_ctrl1 system2 0x01 0x40 bit type name reset value description 7 r/w chg_en 0 charging enable 0 : chg is disabled (default) 1 : chg is enabled [6:4] r/w reserved 100 reserved 3 r/w irq_pulse 0 irq remind function 0 : irq reminding is disabled (default) 1 : irq reminding is enabled. if irq is triggered and no check action, irq pin will be released with every 2s interval and be triggered again. [2:0] r/w reserved 000 reserved name function addr reset chg_ctrl2 clock 0x02 0x00 bit type name reset value description 7 r/w sel_swfreq 0 the switching frequency selection bit (charger) 0 : the switching frequency is 1.5mhz. (default) 1 : the switching frequency is 0.75mhz. 6 r/w fixfreq 0 charger switching frequency 0 : charger switching frequency is varied (default) 1 : charger switching frequency is fixed 5 r/w oscss_en 0 charger spread spectrum enable 0 : disabled (default) 1 : enabled [4:0] r/w reserved 00000 reserved name function addr reset chg_ctrl3 cv 0x03 0x50 bit type name reset value description [7:2] r/w voreg<5:0> 010100 battery regulation voltage. the delta-v of the battery regulation voltage is 20mv. 000000 : 3.8v 000001 : 3.82v 000010 : 3.84v ? 010100 : 4.2v (default) 010101 : 4.22v ? 101001 : 4.62v 101010 : 4.64v 101011 : 4.66v ... 111111 : 5.06v [1:0] r/w reserved 00 reserved
RT9465 16 ds9465-00 may 2017 www.richtek.com ? copyright 2017 richtek technology corporation. all rights reserved. is a registered trademark of ric htek technology corporation. name function addr reset chg_ctrl4 th 0x04 0xc0 bit type name reset value description [7:6] r/w threg <1:0> 11 charger thermal regulation threshold 00 : 60c 11 : 80c 10 : 100c 11 : 120c (default) [5:0] r/w reserved 000000 reserved name function addr reset chg_ctrl5 mivr 0x05 0x0b bit type name reset value description [7:1] r/w vmivr[6:0] 0000101 input mivr threshold setting 0000000 : 3.9v 0000001 : 4v 0000010 : 4.1v 0000011 : 4.2v 0000100 : 4.3v 0000101 : 4.4v (default) 0000110 : 4.5v ? 0011110 : 6.9v 0011111: 7v ? 0110010 : 8.9v 0110011 : 9v ? 1010000 : 11.9v 1010001 : 12v ? 1011111 : 13.4v 1100000 to 1111111 : 13.4v 0 r/w mivr_en 1 mivr loop enable 0 : mivr loop disable 1 : mivr loop enable (default)
RT9465 17 ds9465-00 may 2017 www.richtek.com ? copyright 2017 richtek technology corporation. all rights reserved. is a registered trademark of ric htek technology corporation. name function addr reset chg_ctrl6 cc 0x06 0xa0 bit type name reset value description [7:3] r/w ichg[4:0] 10100 charging regulation current 00000 to 00110 : 0.6a ... 01001 : 0.9a 01010 : 1a 01011 : 1.1a ... 10011 : 1.9a 10100 : 2a (default) ... 11001 : 2.5a 11010 : 2.6a 11110 to 11111 : 3a [2:0] r/w reserved 000 reserved name function addr reset chg_ctrl7 eoc1 0x07 0x5c bit type name reset value description [7:4] r/w ieoc[3:0] 0101 eoc current setting 0000 to 0100 : 600ma 0101 : 600ma (default) 0110 : 700ma 0111 : 800ma 1000 : 900ma 1001 : 1000ma 1010 : 1100ma 1011 : 1200ma 1100 : 1300ma 1101 : 1400ma 1110 : 1500ma 1111 : 1600ma 3 r/w eoc_en 1 ieoc enable/disable 0: disable 1: enable (default) [2:0] r/w chg_tdeg_eoc [2:0] 100 eoc deglitch time 000 : 120us 001 : 180us 010 : 240us 011 : 360us 100 : 2ms (default) 101 : 4ms 110 : 8ms 111 : 16ms
RT9465 18 ds9465-00 may 2017 www.richtek.com ? copyright 2017 richtek technology corporation. all rights reserved. is a registered trademark of ric htek technology corporation. name function addr reset chg_ctrl8 eoc2 0x08 0x00 bit type name reset value description 7 r/w te 0 termination enable 0 : disable charge current termination (default) 1 : enable charge current termination [6:5] r/w eoc_timer[1:0] 00 eoc back-charging time 00 : 0mins (default) 01 : 30mins 10 : 45mins 11 : 60mins [4:0] r/w reserved 00000 reserved name function addr reset chg_ctrl9 timing 0x09 0x00 bit type name reset value description [7:5] r/w wt_fc[2:0] 000 fast charge timer 000 : 4hrs (default) 001 : 6hrs 010 : 8hrs 011 : 10hrs 100 : 12hrs 101 : 14hrs 110 : 16hrs 111 : 20hrs 4 r/w tmr2x_en 0 double charger timer during mivr, aicr, and thermal regulation 0 : disable 2x extended charger timer (default) 1 : enable 2x extended charger timer 3 r/w tmr_en 0 charger timer enable/disable 0 : disable 1 : enable (default) 2 r/w tmr_pause 0 timer control bit 0: timer is active (default) 1: timer is pause [1:0] r/w reserved 00 reserved
RT9465 19 ds9465-00 may 2017 www.richtek.com ? copyright 2017 richtek technology corporation. all rights reserved. is a registered trademark of ric htek technology corporation. name function addr reset chg_ctrl10 wdt 0x0a 0x50 bit type name reset value description 7 r/w wdt_en 0 watch dog timer enable/disable 0 : disable (default) 1 : enable 6 r/w wdt_trst 1 waiting timer to reset i 2 c setup after watchdog is asserted 0 : 200ms 1 : 500ms (default) [5:4] r/w wdt[1:0] 01 watch dog timer, from wdten is enabled to watchdog irq, clear timmer by i 2 c access 00 : 8s 01 : 40s (default) 10 : 80s 11 : 160s [3:0] r/w reserved 0000 reserved name function addr reset chg_ctrl12 adc1 0x0c 0x00 bit type name reset value description [7:4] r adc_rpt[3:0] 0000 report the temp_adc result, sampling every 64t (22 ? s) and average times (352 ? s if temp_ang = 0) 0000 : <60 degree 0001 : >60 degree 0010 : >64 degree 0011 : >68 degree 0100 : >72 degree 0101 : >76 degree 0110 : >80 degree 0111 : >84 degree 1000 : >88 degree 1001 : >92 degree 1010 : >96 degree 1011 : >100 degree 1100 : >104 degree 1101 : >108 degree 1110 : >112 degree 1111 : >116 degree 3 r/w temp_en 1 temperature adc measurement function enable/disable 0 : disable 1 : enable (default) 2 r/w temp_avg 0 choose the average times for temp_adc code calculate 0 : 16times 1 : 32times [1:0] r/w reserved 00 reserved
RT9465 20 ds9465-00 may 2017 www.richtek.com ? copyright 2017 richtek technology corporation. all rights reserved. is a registered trademark of ric htek technology corporation. name function addr reset chg_ctrl13 adc2 0x0d 0x00 bit type name reset value description [7:4] r/w adc_high [3:0] 0011 temperature sensor threshold set. the irq "temp_h" will be trigger when the adc code is larger than adc_high. 0000 : <60 degree 0001 : >60 degree 0010 : >64 degree 0011 : >68 degree (default) 0100 : >72 degree 0101 : >76 degree 0110 : >80 degree 0111 : >84 degree 1000 : >88 degree 1001 : >92 degree 1010 : >96 degree 1011 : >100 degree 1100 : >104 degree 1101 : >108 degree 1110 : >112 degree 1111 : >116 degree [3:0] r/w adc_offset [3:0] 0000 temperature sensor threshold set. the irq "temp_l" will be trigger when adc code is smaller than adc_high_rst before "temp_h" trigged. 0000 : 4 degree (default) 0001 : 4 degree 0010 : 8 degree 0011 : 12 degree 0100 : 16 degree 0101 : 20 degree 0110 : 24 degree 0111 : 28 degree 1000 : 32 degree 1001 : 36 degree 1010 : 40 degree 1011 : 44 degree 1100 : 48 degree 1101 : 52 degree 1110 : 56 degree 1111 : 60 degree
RT9465 21 ds9465-00 may 2017 www.richtek.com ? copyright 2017 richtek technology corporation. all rights reserved. is a registered trademark of ric htek technology corporation. name function addr reset system1 chg1 0x20 0xc0 bit type name reset value description [7:6] r chg_stat 11 charger status bit 00 : ready 01 : charge in progress 10 : charge done 11 : fault [5:4] r/w reserved 00 reserved [3:1] r version[2:0] 000 version code 0 r trimdone 0 trimdone name function addr reset chg_statc chg1 0x30 0x00 bit type name reset value description 7 r pwr_rdy 0 power ready status bit 0 : input power is bad, vin < vddauvlo2 1 : input power is good, vin > vddauvlo2 6 r chg_mivr 0 charger warning. input voltage mivr loop active. 0 : mivr loop is not active 1 : mivr loop is active 5 r chg_treg 0 charger warning. thermal regulation loop active. 0 : thermal regulation loop is not active 1 : thermal regulation loop is active [4:0] r/w reserved 00000 reserved name function addr reset chg_fault chg2 0x31 0x00 bit type name reset value description 7 r chg_vbusov 0 vbus over-voltage protection. set when vbus > vin_ovp is detected. 0 : vbus is not over-voltage 1 : vbus is over-voltage 6 r chg_vbatov 0 charger fault. battery ovp. 0 : battery is not ovp 1 : battery is ovp 4 r chg_vbatsuv 0 charger fault. battery uvp. 0 : battery is not uvp 1 : battery is uvp [4:0] r/w reserved 00000 reserved
RT9465 22 ds9465-00 may 2017 www.richtek.com ? copyright 2017 richtek technology corporation. all rights reserved. is a registered trademark of ric htek technology corporation. name function addr reset chg_irq1 irq1 0x32 0x00 bit type name reset value description 7 r/c otpi 0 thermal shutdown fault 0 : no operation 1 : event occurs 6 r/c chg_adpbadi 0 charger bad adaptor fault 0 : no event occurs 1 : event occurs 5 r/c chg_tmri 0 charger timer time-out fault 0 : no event occurs 1 : event occurs 4 r/c temp_h 0 temperature too high fault 0 : no event occurs 1 : event occurs 3 r/c temp_l 0 temperature back to low fault 0 : no event occurs 1 : event occurs 2 r/w reserved 0 reserved 1 r/c chg_statci 0 status of each chg_statc register (reg0x30) is changed 0 : no event occurs 1 : event occurs 0 r/c chg_faulti 0 status of each chg_fault register (reg0x31) is changed 0 : no event occurs 1 : event occurs name function addr reset chg_irq2 irq2 0x33 0x00 bit type name reset value description 7 r/c chg_ieoci 0 charging current is lower than eoc current ever occurs 0 : no event occurs 1 : event occurs 6 r/c chg_termi 0 charge terminated event 0 : no event occurs 1 : event occurs 5 r/c ssfinishi 0 charger or boost soft-start finishes event 0 : no event occurs 1 : event occurs 4 r/c wdtmri 0 watch dog timer timeout fault 0 : no event occurs 1 : event occurs [3:0] r/w reserved 0000 reserved
RT9465 23 ds9465-00 may 2017 www.richtek.com ? copyright 2017 richtek technology corporation. all rights reserved. is a registered trademark of ric htek technology corporation. name function addr reset chg_statc_mask chgmask1 0x40 0x00 bit type name reset value description 7 r/w pwr_rdym 0 power ready interrupt mask 0 : interrupt is not masked 1 : interrupt is masked 6 r/w chg_mivrm 0 input voltage mivr loop active interrupt mask 0 : interrupt is not masked 1 : interrupt is masked 5 r/w chg_tregm 0 thermal regulation loop active interrupt mask 0 : interrupt is not masked 1 : interrupt is masked [4:0] r/w reserved 00000 reserved name function addr reset chg_fault_mask chgmask2 0x41 0xe0 bit type name reset value description 7 r/w chg_vbuso vm 1 vbus over-voltage protection interrupt mask 0 : interrupt is not masked 1 : interrupt is masked 6 r/w chg_vbatov m 1 battery ovp interrupt mask 0 : interrupt is not masked 1 : interrupt is masked 4 r/w chg_vbatsu vm 1 system uvp interrupt mask 0 : interrupt is not masked 1 : interrupt is masked [4:0] r/w reserved 00000 reserved
RT9465 24 ds9465-00 may 2017 www.richtek.com ? copyright 2017 richtek technology corporation. all rights reserved. is a registered trademark of ric htek technology corporation. name function addr reset chg_irq1_mask irqmask1 0x42 0xff bit type name reset value description 7 r/w otpm 1 thermal shutdown fault interrupt mask 0 : interrupt is not masked 1 : interrupt is masked 6 r/w chg_adpbadm 1 charger bad adaptor fault interrupt mask 0 : interrupt is not masked 1 : interrupt is masked 5 r/w chg_tmrm 1 charger timer time-out fault interrupt mask 0 : interrupt is not masked 1 : interrupt is masked 4 r/w temp_hm 1 temperature too high fault interrupt mask 0 : interrupt is not masked 1 : interrupt is masked 3 r/w temp_lm 1 temperature back to low fault interrupt mask 0 : interrupt is not masked 1 : interrupt is masked 2 r/w reserved 1 reserved 1 r/w chg_statcm 1 status of each chg_statc register (reg0x30) changed interrupt mask 0 : interrupt is not masked 1 : interrupt is masked 0 r/w chg_faultm 1 status of each chg_fault register (reg0x31) changed interrupt mask 0 : interrupt is not masked 1 : interrupt is masked name function addr reset chg_irq2_mask irqmask2 0x43 0xff bit type name reset value description 7 r/c chg_ieocm 1 charging current is lower than eoc current interrupt mask 0 : interrupt is not masked 1 : interrupt is masked 6 r/c chg_termm 1 charge terminated event interrupt mask 0 : interrupt is not masked 1 : interrupt is masked 5 r/c ssfinishm 1 charger or boost soft-start finishes event interrupt mask 0 : interrupt is not masked 1 : interrupt is masked 4 r/c wdtmrm 1 watch dog timer timeout fault interrupt mask 0 : interrupt is not masked 1 : interrupt is masked [3:0] r/w reserved 1111 reserved
RT9465 25 ds9465-00 may 2017 www.richtek.com ? copyright 2017 richtek technology corporation. all rights reserved. is a registered trademark of ric htek technology corporation. thermal considerations the junction temperature should never exceed the absolute maximum junction temperature t j(max) , listed under absolute maximum ratings, to avoid permanent damage to the device. the maximum allowable power dissipation depends on the thermal resistance of the ic package, the pcb layout, the rate of surrounding airflow, and the difference between the junction and ambient temperatures. the maximum power dissipation can be calculated using the following formula : p d(max) = (t j(max) ? t a ) / ja where t j(max) is the maximum junction temperature, t a is the ambient temperature, and ja is the junction-to-ambient thermal resistance. for continuous operation, the maximum operating junction temperature indicated under recommended operating conditions is 125 c. the junction-to-ambient thermal resistance, ja , is highly package dependent. for a wqfn-16l 3x3 package, the thermal resistance, ja , is 30 c/w on a standard jedec 51-7 high effective-thermal- conductivity four-layer test board. the maximum power dissipation at t a = 25 c can be calculated as below : p d(max) = (125 c ? 25 c) / (30 c/w) = 3.33w fo r a wqfn-16l 3x3 package. the maximum power dissipation depends on the operating ambient temperature for the fixed t j(max) and the thermal resistance, ja . the derating curves in figure 1 allows the designer to see the effect of rising ambient temperature on the maximum power dissipation. 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 0 25 50 75 100 125 ambient temperature (c) maximum power dissipation (w) 1 figure 1. derating curve of maximum power dissipation layout considerations ? place the input and output capacitors as close to the input and output pins as possible. ? keep the main power traces as wide and short as possible. ? the output inductor and bootstrap capacitor should be placed close to the chip and sw pins.
RT9465 26 ds9465-00 may 2017 www.richtek.com ? copyright 2017 richtek technology corporation. all rights reserved. is a registered trademark of ric htek technology corporation. figure 2. pcb layout guide top layer inner layer2 inner layer1 bottom layer 0412 sw sw sw boot vin vin reg sda scl en int bat- bat+ agnd pgnd pgnd vin 0603c vout gnd gnd gnd sw 0402c 0201 c
RT9465 27 ds9465-00 may 2017 www.richtek.com ? copyright 2017 richtek technology corporation. all rights reserved. is a registered trademark of ric htek technology corporation. outline dimension a a1 a3 d e 1 d2 e2 l b e see detail a dimensions in millimeters dimensions in inches symbol min max min max a 0.700 0.800 0.028 0.031 a1 0.000 0.050 0.000 0.002 a3 0.175 0.250 0.007 0.010 b 0.180 0.300 0.007 0.012 d 2.950 3.050 0.116 0.120 d2 1.300 1.750 0.051 0.069 e 2.950 3.050 0.116 0.120 e2 1.300 1.750 0.051 0.069 e 0.500 0.020 l 0.350 0.450 0.014 0.018 w-type 16l qfn 3x3 package note : the configuration of the pin #1 identifier is optional, but must be located within the zone indicated. det ail a pin #1 id and tie bar mark options 1 1 2 2
RT9465 28 ds9465-00 may 2017 www.richtek.com richtek technology corporation 14f, no. 8, tai yuen 1 st street, chupei city hsinchu, taiwan, r.o.c. tel: (8863)5526789 richtek products are sold by description only. richtek reserves the right to change the circuitry and/or specifications without notice at any time. customers should obtain the latest relevant information and data sheets before placing orders and should verify that such information is current and complete. richtek cannot assume responsibility for use of any circuitry other than ci rcuitry entirely embodied in a richtek product. information furnish ed by richtek is believed to be accurate and reliable. however, no respon sibility is assumed by richtek or its subsidiaries for its use; nor for any infringeme nts of patents or other rights of third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of r ichtek or its subsidiaries. p axaybxby c d sxsy v/w/u/xqfn3*3-16 16 0.50 3.50 3.50 2.10 2.10 0.70 0.30 1.50 1.50 0.05 tolerance footprint dimension (mm) package number of pin footprint information

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