View XC9503B092AL_4361051.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

mar. 14, 2003 ver. 2 ? applications ? 2ch dc/dc controller (step-down + step-down) z pdas ? input voltage range 2.0v ~ 10.0v z palm top computers ? output voltage externally set-up z digital cameras ? switching frequency 300khz (15%) z various multi-function power supplies ? maximum duty cycle 100% ? pwm, pwm/pfm switching control ? features ? high efficiency step-down 92% (typ.) input voltage range : 2.0v ~ 10v ? small msop-10 package power supply voltage range : 2.0v ~ 10v output voltage range : 0.9v ~ 6.0v ? general descri p tion oscillation frequency : 300khz 15% (180khz, 500khz custom) output current stand-by function : 3.0 a (max.) package : msop-10 soft-start time : 10 ms (internally set) ? t yp ical performance characteristics ? t yp ical a pp lication circui t xc9503b093a input : vout 1 : 3.3v, vout 2 : 1.8v : more than 1000ma (vin=5.0v, vout=3.3v) noise is easily reduced with pwm control since the frequency is fixed. the series gives freedom to select control suited to the application. soft-start time is internally set to 10msec and offers protection against in-rush currents when the power is switched on and also protects against voltage overshoot. xc9503 series 2ch. step-down dc/dc controller ics the xc9503 series are pwm controlled, pwm/pfm automatic switching controlled, multi-functional, 2 channel step-down dc/dc controller ics. since the series has a built-in 0.9v reference voltage (accuracy 2%), 0.9v to 6.0v can be set using external components. with a 300khz frequency, the size of the external components can be reduced. switching frequencies of 180khz & 500khz are also available as custom- designed products. the control of the xc9503 series can be switched between pwm control and pwm/pfm automatic switching control using external signals. control switches from pwm to pfm during light loads when automatic switching is selected and the series is highly efficient from light loads through to large output currents. can be set freely with 0.9v (2.0%) of reference voltage supply and external components. xc9503b093a (300khz,vout1:3.3v) 0 10 20 30 40 50 60 70 80 90 100 0.1 1 10 100 1000 output current 1 i out1 (ma) efficiency 1 effi1 (%) vin=5.0v pwm pwm/pfm switching l1=22 h(cdrh5d28), c l1 =47 f(tantalum) sd1:ma2q737, tr1:xp162a1355p l1:22 h cdrh5d28 tr2:pch mosfet xp162a12a6p cin :47 f vin =5.0v tr1:pch mosfet xp162a12a6p sd2 :ma2q737 sd1 :ma2q737 rfb11 :200k ? cfb1 :62pf rfb12 :75k ? vout1:3.3v 1 ext1/ 2 vdd 3 fb1 fb2 8 gnd 9 ext2/ 10 4 pwm1 pwm2 7 5 en1 en2 6 cl1: 47 fx2 cl2: 47 fx2 vpwm1 vpwm2 ven2 ven1 l2:22 h cdrh5d28 vout2:1.8v rfb21 :220k ? rfb22 :220k ? cfb2 :62pf 1
? pin configuration ? pin assignment ? ordering information xc9503 123456 description fb voltage 0.9v l 5 standard feed reverse feed 6 embossed tape switching frequency standard (10 pin) pin name functions xc9503 series pin number 5 8 fb2 2 3 4 2 3 300khz b 0 a 500khz (custom) package 9 msop-10 r 2ch. step-down dc/dc controller ics 180khz (custom) 1 ext 1 channel 1: external transistor drive pin 2v dd supply voltage 3 fb1 channel 1 : output voltage monitor feedback pin 4 pwm1 channel 1 : pwm/pfm switching pin channel 2 : output voltage monitor feedback pin 5 en1 channel 1 : enable pin 6 en2 channel 2 : enable pin 10 ext 2 channel 2 : external transistor drive pin designator 1 symbol 9 gnd ground 7 pwm2 channel 2 : pwm/pfm switching pin 1 ext1 2 vdd 3 fb1 fb2 8 gnd 9 ext2 10 4 pwm1 pwm2 7 5 en1 en2 6 msop-10 (top view) 2
? block diagram ? absolute maximum ratings ta=25 o c * voltage goes to ground. 150 o c mw - 0.3 ~ 12 - 0.3 ~ v dd + 0.3 parameter fb1, 2 pin voltage en1, 2 pin voltage pwm1,2 pin voltage i ext 100 ma pd operating ambient temperature storage temperature ext1, 2 pin voltage v pwm v ext topr v ext1, 2 pin current power dissipation v v en - 0.3 ~ 12 v - 0.3 ~ 12 v symbol ratings units 2ch. step-down dc/dc controller ics xc9503 series v tstg o c - 55 ~ +125 - 40 ~ + 85 v dd pin voltage v fb v dd - 0.3 ~ 12 pwm1 + - fb1 vdd ext1 vref1 = 0.9v with soft start1, en1 + - pwm/pfm controller 1 vref2 = 0.9v with soft start 1, en2 + - pwm/pfm controller 2 fb2 gnd ext2 osc generator ramp wave generator 1 ramp wave generator 2 error amp2 error amp1 pwm comparator2 pwm comparator1 en1 pwm2 en2 en1 to internal circuit en2 to internal circuit - + 3
? electrical characteristics xc9503b092a common characteristics ta=25 o c vout1 vout2 unless otherwise stated, vdd=3.0v, pwm1,2=3.0v, en1, 2 =3.0v output 1 characteristics step-down controller unless otherwise stated , vdd=en1=pwm1=3.0v , pwm2=en2=gnd , ext2=open , fb2=open , vin=5.0v output 2 characteristics step-down controller unless otherwise stated , vdd=en2=pwm2=3.0v , pwm1=en1=gnd , ext1=open , fb1=open , vin=5.0v notes 1) 2) 7 7 ? 5 ? effi2 p-ch mosfet : xp162a12a6p 92 - iout2=250ma 100 - - same as idd1 - en1=0, ext1=vdd-0.4v 22 - min. vin=3.0v, iout1=10ma 0.882 efficiency1 (note 2) effi1 - p-ch mosfet : xp162a12a6p v 10.0 - fb1,2 "high" current ifbh fb1, 2=3.0v vin - max. input voltage pwm1,2 "low" current pfm duty ratio 1 pfmdty1 no load, vpwm1=0v fb1, 2=1.0v fb1,2 "low" current vfbl parameter symbol conditions vfb1 -- 1 supply current 2 idd2 fb1, 2=1.0v - 60 140 5.0 vpwmh2 no load en2=0, ext2=vdd-0.4v 0.65 - parameter symbol conditions 2 fb2 voltage vfb2 vin=3.0v, iout2=10ma 0.882 units min. parameter symbol supply voltage vdd - typ. min. 0.9 2.0 - pwm1,2 "high" current ipwmh output voltage range (note 1) voutset - - - ipwml fb1, 2=3.0v, pwm=0v fb1, 2=0v tss2 vout2 0.95v, en2=0v 0.65v fb1=0v, fb2=1.0v en1=3.0v, en2=0v, fb1=0v fb1, 2=3.0v, pwm=3.0v same as idd1 same as idd2 - - pwm2 "high" voltage 5 47 22 28 30 ext2 "high" on resistance rextbh2 pwm2 "low" voltage vpwml2 no load mindty2 ext2 "low" on resistance rextbl2 fb2=0v, ext2=0.4v soft-start time 2 efficiency2 (note 2) 0.20 - - 7 v v % 7 7 minimum operation voltage vinmin2 - pfm duty ratio 2 pfmdty2 no load, vpwm2=0v minimum duty ratio 2 22 - maxdty2 % typ. 30 38 % % max. 0.900 0.918 50 10.0 0 2.0 - -0.50 - 0.50 - 180 10.0 10.0 conditions 2ch. step-down dc/dc controller ics test circuit max. units 0.9 supply current 1 idd1 - 3.0 a stand-by current istb same as idd1, en1=en2=0v - 1.0 v 207 khz switching frequency fosc same as idd1 153 supply current 1-1 idd1-1 en2=3.0v, en1=0v, fb2=0v --v en1,2 "high" voltage venh fb1,2=0v 0.65 - 0.20 v en1,2 "low" voltage venl fb1,2=0v - - 0.50 a en1,2 "high" current ienh en1,2=3.0v - - -0.50 a en1,2 "low" current ienl en1,2=0v, fb1,2=3.0v - 0.918 0.900 -0 - 38 30 - 0.20 - - 10.0 20.0 92 - soft-start time1 tss1 pwm1 "low" voltage - fb2=0v, ext1=0.4v ext1 "low" on resistance rextbl1 - 0.65 vpwml1 no load vout1 0.95v, en1=0v 0.65v 5.0 a 60 120 a ms vin 2.0v, iout1, 2=1ma v - 10.0 xc9503 series 1 1 2 2 2 2 v a 2 2 2 2 a 2 2 4 units v a % % % v 4 4 6 v test circuit please be careful not to exceed the breakdown voltage level of the peripheral parts. effi={ [ (output voltage) x (output current) ] / [ (input voltage) x (input current) ] } x 100 - v 1 2 2 2 110 a 2 supply current 1-2 idd1-2 - 60 130 a fb1=1.0v, fb2=0v typ. max. test circuit 2 a - 0.50 - -0.50 - 3 minimum operation voltage vinmin1 - - 2.0 v 1 fb1 voltage % 2 minimum duty ratio1 mindty1 2 maximum duty ratio 1 maxdty1 100 - 4 ext1 "high" on resistance rextbh1 - 28 47 ? 5 4 iout1=250ma 22 30 ? 5 pwm1 "high" voltage v same as idd2 maximum duty ratio 2 20.0 ms vpwmh1 no load 4
? electrical characteristics xc9503b093a common characteristics ta=25 o c vout1 vout2 unless otherwise stated, vdd=3.0v, pwm1,2=3.0v, en1, 2 =3.0v output 1 characteristics step-down controller unless otherwise stated , vdd=en1=pwm1=3.0v , pwm2=en2=gnd , ext2=open , fb2=open , vin=5.0v output 2 characteristics step-down controller unless otherwise stated , vdd=en2=pwm2=3.0v , pwm1=en1=gnd , ext1=open , fb1=open , vin=5.0v notes 1) 2) please be careful not to exceed the breakdown voltage level of the peripheral parts. effi={ [ (output voltage) x (output current) ] / [ (input voltage) x (input current) ] } x 100 -v 7 7 0.20 v 0.65 pwm2 "low" voltage vpwml2 - no load no load pwm2 "high" voltage vpwmh2 -- 22 30 ? 5 ext2 "low" on resistance rextbl2 fb2=0v, ext2=0.4v - 7 ext2 "high" on resistance rextbh2 en2=0, ext2=vdd-0.4v - 28 47 ? 5 soft-start time 2 tss2 vout2 0.95v, en2=0v 0.65v 5.0 7 iout2=250ma 92 - % 7 30 efficiency2 (note 2) effi2 - p-ch mosfet : xp162a12a6p pfm duty ratio 2 pfmdty2 no load, vpwm2=0v 22 0.900 0.918 v 6 fb2 voltage vfb2 vin=3.0v, iout2=10ma 0.882 typ. max. units test circuit parameter symbol conditions min. -v 4 4 0.20 v 0.65 pwm1 "low" voltage vpwml1 - no load no load pwm1 "high" voltage vpwmh1 -- 22 30 ? 5 ext1 "low" on resistance rextbl1 fb2=0v, ext1=0.4v - 4 ext1 "high" on resistance rextbh1 en1=0, ext1=vdd-0.4v - 28 47 ? 5 2 38 p-ch mosfet : xp162a12a6p soft-start time1 tss1 vout1 0.95v, en1=0v 0.65v 5.0 10.0 20.0 ms 2 iout1=250ma minimum duty ratio1 mindty1 same as idd2 no load, vpwm1=0v --0% 2.0 v 1 maximum duty ratio 1 maxdty1 same as idd1 100 - - % minimum operation voltage vinmin1 - - -0.50 a 2 fb1,2 "low" current vfbl fb1, 2=1.0v - - 0.50 a 2 fb1,2 "high" current ifbh fb1, 2=3.0v - - -0.50 a 2 pwm1,2 "low" current ipwml fb1, 2=3.0v, pwm=0v - - 0.50 a 2 pwm1,2 "high" current ipwmh fb1, 2=3.0v, pwm=3.0v - - -0.50 a 2 en1,2 "low" current ienl en1,2=0v, fb1,2=3.0v - - 0.50 a 2 en1,2 "high" current ienh en1,2=3.0v - - 0.20 v 2 en1,2 "low" voltage venl fb1,2=0v - --v 2 en1,2 "high" voltage venh fb1,2=0v 0.65 300 345 khz 2 switching frequency fosc same as idd1 255 1.0 3.0 a 2 stand-by current istb same as idd1, en1=en2=0v - 2 fb1=1.0v, fb2=0v supply current 2 idd2 fb1, 2=1.0v - 80 150 a 2 a en2=3.0v, en1=0v, fb2=0v fb1=0v, fb2=1.0v supply current 1-2 idd1-2 - 70 150 a supply current 1 v 1 - 10.0 v idd1 - 10.0 70 140 vin 2.0v, iout1, 2=1ma 0.9 0.9 - --v 1 max. input voltage vin 10.0 - 10.0 v 1 supply voltage vdd 2.0 test circuit xc9503 series 2ch. step-down dc/dc controller ics parameter symbol conditions min. typ. max. units fb1, 2=0v 2 supply current 1-1 output voltage range (note 1) voutset idd1-1 en1=3.0v, en2=0v, fb1=0v - 60 120 a 2 parameter symbol conditions min. typ. max. units test circuit 0.918 v 3 fb1 voltage vfb1 vin=3.0v, iout1=10ma 0.882 pfmdty1 22 30 0.900 - % 4 efficiency1 (note 2) effi1 - 92 - % 4 pfm duty ratio 1 minimum operation voltage vinmin2 - - 2.0 v 1 maximum duty ratio 2 maxdty2 same as idd1 100 - - % 2 2 minimum duty ratio 2 mindty2 same as idd2 - - 0 % 38 % 10.0 20.0 ms 5
? electrical characteristics xc9503b095a common characteristics ta=25 o c vout1 vout2 unless otherwise stated, vdd=3.0v, pwm1,2=3.0v, en1, 2 =3.0v output 1 characteristics step-down controller unless otherwise stated , vdd=en1=pwm1=3.0v , pwm2=en2=gnd , ext2=open , fb2=open , vin=5.0v output 2 characteristics step-down controller unless otherwise stated , vdd=en2=pwm2=3.0v , pwm1=en1=gnd , ext1=open , fb1=open , vin=5.0v notes 1) 2) supply current 1 idd1 fb1, 2=0v parameter fb1,2 "low" current vfbl fb1, 2=1.0v pwm1,2 "low" current ipwml fb1, 2=3.0v, pwm=0v en1,2 "low" current please be careful not to exceed the breakdown voltage level of the peripheral parts. effi={ [ (output voltage) x (output current) ] / [ (input voltage) x (input current) ] } x 100 parameter symbol conditions min. typ. max. units test circuit -v 7 7 0.20 v 0.65 pwm2 "low" voltage vpwml2 - no load no load pwm2 "high" voltage vpwmh2 -- 22 30 ? 5 ext2 "low" on resistance rextbl2 fb2=0v, ext2=0.4v - 28 47 ? 5 ext2 "high" on resistance rextbh2 en2=0, ext2=vdd-0.4v - 10.0 20.0 ms 7 soft-start time 2 tss2 vout2 0.95v, en2=0v 0.65v 5.0 91 - % 7 maxdty2 same as idd1 - p-ch mosfet : xp162a12a6p - minimum operation voltage iout2=250ma efficiency2 (note 2) effi2 pfm duty ratio 2 pfmdty2 no load, vpwm2=0v maximum duty ratio 2 % 22 30 38 test circuit 0.900 0.918 v 6 7 v no load no load 4 - -v 4 1 30 - 0.20 pwm1 "high" voltage vpwmh1 0.65 - pwm1 "low" voltage vpwml1 22 5 ? 5 ext1 "low" on resistance rextbl1 fb2=0v, ext1=0.4v - -2847 ? efficiency1 (note 2) ext1 "high" on resistance rextbh1 en1=0, ext1=vdd-0.4v 10.0 20.0 ms - effi1 4 soft-start time1 tss1 vout1 0.95v, en1=0v 0.65v 5.0 pfm duty ratio 1 pfmdty1 22 no load, vpwm1=0v 2 iout1=250ma - 30 38 % 4 p-ch mosfet : xp162a12a6p 2 4 maximum duty ratio 1 maxdty1 same as idd1 100 -0.50 a 2 typ. max. - symbol conditions - units - 2.0 1 minimum operation voltage vinmin1 - 2 fb1,2 "high" current ifbh fb1, 2=3.0v - - 0.50 a - 0.50 a - - -0.50 a pwm1,2 "high" current ipwmh fb1, 2=3.0v, pwm=3.0v - -0.50 a 2 2 2 ienl en1,2=0v, fb1,2=3.0v - - - 0.50 a 2 en1,2 "high" current ienh en1,2=3.0v - - 0.20 v 2 en1,2 "low" voltage venl fb1,2=0v - --v 2 en1,2 "high" voltage venh fb1,2=0v 0.65 500 575 khz 2 switching frequency fosc same as idd1 425 1.0 3.0 a 2 stand-by current istb same as idd1, en1=en2=0v - 190 a fb1=1.0v, fb2=0v 2 - a 150 en2=3.0v, en1=0v, fb2=0v supply current 1-1 idd1-1 en1=3.0v, en2=0v, fb1=0v -80 supply current 2 idd2 fb1, 2=1.0v 100 2 2 fb1=0v, fb2=1.0v supply current 1-2 idd1-2 - 100 180 a 2 1 - 10.0 v output voltage range (note 1) voutset - 10.0 vin 2.0v, iout1, 2=1ma 0.9 0.9 - --v v 90 170 a 1 max. input voltage vin 10.0 - 10.0 v 1 supply voltage vdd 2.0 xc9503 series 2ch. step-down dc/dc controller ics test circuit fb1 voltage vfb1 vin=3.0v, iout1=10ma 0.882 0.900 0.918 v 3 min. minimum duty ratio1 mindty1 same as idd2 - v -% 91 % - -0% parameter 2.0 v symbol conditions min. typ. max. units vfb2 fb2 voltage 2 100 - - % - vin=3.0v, iout2=10ma 0.882 vinmin2 2 minimum duty ratio 2 mindty2 same as idd2 - - 0 % 6
? o p erational descri p tion the ramp wave generator generates a saw-tooth waveform based on outputs from the phase shift generator. xc9503 series 2ch. step-down dc/dc controller ics this circuit generates pfm pulses. control can be switched between pwm control and pwm/pfm automatic switching control using external signals. the pwm/pfm automatic switching mode is selected when the voltage of the pwm1 (2) pin is less than 0.2v, and the control switches between pwm and pfm automatically depending on the load. as the pfm circuit generates pulses based on outputs from the pwm comparator, shifting between modes occurs smoothly. pwm control mode is selected when the voltage of the pwm1 (2) pin is more than 0.65v. noise is easily reduced with pwm control since the switching frequency is fixed. control suited to the application can easily be selected which is useful in audio applications, for example, where traditionall y, efficiencies have been sacrificed during stand-by as a result of using pwm control (due to the noise problems associated with the pfm mode in stand-by). this circuit generates the switching frequency which in turn generates the reference clock. the pwm comparator compares outputs from the error amp. and saw-tooth waveform. when the voltage from the error amp's output is low, the external switch will be set to on. this function controls the operation and shutdown of the ic. when the voltage of the en1 or en2 pins is 0.2v or less, the mod e will be chip disable, the channel's operations will stop and the ext pins will be kept at a highlevel (the external p-type mosf et will be off). when both en1 and en2 are in a state of chip disable, current consumption will be no more than 3.0 a. when the en1 or en2 pin's voltage is 0.65v or more, the mode will be chip enable and operations will recommence. with soft- start, 95% of the set output voltage will be reached within 10ms (typ) from the moment of chip enable. the reference voltage, vref (fb pin voltage)=0.9v, is adjusted and fixed by laser trimming (for output voltage settings, please refer to page 8). to protect against inrush current, when the power is switched on, and also to protect against voltage oversho ot, soft-start time is set internally to 10ms. it should be noted, however, that this circuit does not protect the load capacitor (cl) from inrush current. with the vref voltage limited and depending upon the input to the error amps, the operation maintains a balance between the two inputs of the error amps and controls the ext pin's on time so that it doesn't increase more than is necessary. the xc9503 series are multi-functional, 2 channel step-down dc/dc converter controller ics with built-in high speed, low on resistance drivers. the error amplifier is designed to monitor the output voltage and it compares the feedback voltage (fb) with the reference voltage. in response to feedback of a voltage lower than the reference voltage, the output voltage of the error amp. decreases . 7
v out =0.9 (rfb11+rfb12) /rfb12 [example of calculation] when rfb11=200k ? and rfb12=75k ? , v out1 =0.9 (200k+75k) / 75k=3.3v. [typical example] the same method can be adopted for channel two also. [external components] tr : * mosfet xp162a12a6p (torex p-channel power mosfet) sd : ma2q737 (schottky , matsushita) cms02 (schottky, toshiba) l : 10 h (sumida, cdrh5d28, fosc = 500khz) 22 h (sumida, cdrh5d28, fosc = 300khz) 22 h (sumida, cdrh5d28, fosc = 180khz) cl : 16v, 47 f (tantalum) c=(cl standard value) (iout (ma)/500ma vout/vin tr : * pnp mosfet 2sa1213 (sanyo) rb : 500 ? ( adjust in accordance with load & tr.'s hfe.) set according to the equation below. rb (vin-0.7) x hfe / i c -r extbh cb : 2200pf (ceramic) set according to the equation below. cb (2 x rb x fosc x 0.7) the same components can be adopted for both channel 1 and channel 2. xc9503 series 2ch. step-down dc/dc controller ics output voltage can be set by adding external split resistors. output voltage is determined by the following equation, based on the values of rfb11(rfb21) and rfb12(rfb22). the sum of rfb11(rfb21) and rfb12(rfb22) should normally be 1 m ? or the value of cfb1(cfb2), speed-up capacitor for phase compensation, should be fzfb= 1 / (2 cfb1 rfb11) which is equal to 12khz. adjustments are required from 1khz to 50khz depending on the application, value of inductance (l), and value of load capacity (cl). v out (v) rfb11 (k ? ) rfb12 (k ? ) cfb1 (pf) v out (v) rfb11 (k ? ) rfb12 (k ? ) cfb1 (pf) 390 220 33 1.0 30 270 430 180 33 1.5 220 330 62 24 1.8 220 220 62 2.0 330 270 39 2.2 390 270 33 18 160 75 62 240 5.0 200 3.0 560 2.7 360 2.5 82 3.3 note : vgs breakdown voltage of this tr. is 12v so please be careful with the power supply voltage. increase capacity according to the equation below when the step-up voltage ratio is large and output current is high. 8
? test circuits xc9503 series 2ch. step-down dc/dc controller ics r fb11 r fb12 c l1 v out 1 510 ? 2 20 0pf l2 pnp tr2 r fb21 r fb22 r l2 c l2 v out 2 r l1 v i n 1 f 2 vdd 3 fb1 fb2 8 gnd 9 4 pwm1 pwm2 7 5 en1 en2 6 circuit 1 circuit 2 sbd2 c in circuit 5 circuit 6 circuit 7 pch mosfet2 l2 r l v v in v out 2 a a c in 2 vdd 3 fb1 fb2 8 gnd 9 4 pwm1 pwm2 7 5 en1 en2 6 c l2 os c v pwm1 v en1 a 1 f v dd osc a a v pwm2 a a v en2 2 vdd 3 fb1 fb2 8 gnd 9 4 pwm1 pwm2 7 5 en1 en2 6 v fb1 a v fb2 a v pwm1 v en 1 1 f v dd v pwm2 v en 2 2 vdd 3 fb1 fb2 8 gnd 9 4 pwm1 pwm2 7 5 en1 en2 6 v fb1 v fb2 v ext2 sbd2 c in c fb1 c fb2 a pch mosfet2 l2 r l v v in v out 2 a a 2 vdd 3 fb1 fb2 8 gnd 9 4 pwm1 pwm2 7 5 en1 en2 6 sbd2 200k ? 75k ? c l2 62 pf 22 00p f 510 ? sbd 1 l1 pnp tr 1 a v ext1 r l v in c l1 v out 1 c in a 2 vdd 3 fb1 fb2 8 gnd 9 4 pwm1 pwm2 7 5 en1 en2 6 v a pch mosfet1 circuit 3 circuit 4 r l v in c l1 v out 1 c in a 2 vdd 3 fb1 fb2 8 gnd 9 4 pwm1 pwm2 7 5 en1 en2 6 v a pch mosfet1 62pf sbd1 sbd1 200k ? 75k ? l1 l1 1 ext1 ext2 10 ext2 10 1 ext1 ext2 10 1 ext1 ext2 10 1 ext1 ext2 10 1 ext1 1 ext1 ext2 10 1 ext1 ext2 10 9
? peri p heral com p onents used for test circuits circuit 1 l1, l2 : 22 h (sumida cdrh5d28) : xc9503b092a 15 h (sumida cdrh5d28) : xc9503b093a 10 h (sumida cdrh5d28) : xc9503b095a sd1, sd2 : crs02 (schottky diode, toshiba) ec10qs06 (schottky diode, nihon inter) cl1, cl2 : 16mce476md2 (tantalum, nihon chemicon) cin : 16mce476md2 (tantalum, nihon chemicon) pnp tr1, 2: 2sa1213 (toshiba) rfb : please use by the conditions as below. rfb11 + rfb12 1m ? rfb21 + rfb22 1m ? rfb11 / rfb12 = (setting output voltage / 0.9) -1 vout2=(0.9-vout1) x (rfb21/rfb22) + 0.9v cfb : please adjust as below: fzfb=1/(2 x x cfb1 x rfb11) = 1khz ~50khz ( 12khz usual) fzfb=1/(2 x x cfb2 x rfb21) = 1khz ~50khz ( 12khz usual) circuits 3 l1 : 22 h (sumida cdrh5d28) sd1 : ma2q737 (schottky diode, matsushita) cl1 : 16mce476md2 (tantalum, nihon chemicon) cin : 16mce476md2 (tantalum, nihon chemicon) p-ch mosfet1 : xp161a12a6p (torex) circuits 4 l1 : 22 h (sumida cdrh5d28) : xc9503b092a 15 h (sumida cdrh5d28) : xc9503b093a 10 h (sumida cdrh5d28) : xc9503b095a sd1 : ma2q737 (schottky, matsushita) cl1 : 16mce476md2 (tantalum, nihon chemicon) cin : 16mce476md2 (tantalum, nihon chemicon) p-ch mosfet1 : xp161a12a6p (torex) circuit 6 l1 : 22 h (sumida cdrh5d28) sd1 : ma2q737 (schottky diode, matsushita) cl1 : 16mce476md2 (tantalum, nihon chemicon) cin : 16mce476md2 (tantalum, nihon chemicon) p-ch mosfet2 : xp162a12a6p (torex) circuit 7 l2 : 22 h (sumida cdrh5d28) : xc9503b092a 15 h (sumida cdrh5d28) : xc9503b093a 10 h (sumida cdrh5d28) : xc9503b095a sd2 : ma2q737 (schottky, matsushita) cl2 : 16mce476md2 (tantalum, nihon chemicon) cin : 16mce476md2 (tantalum, nihon chemicon) p-ch mosfet2 : xp161a12a6p (torex) xc9503 series 2ch. step-down dc/dc controller ics 10
? notes on use 1. checking for intermittent oscillation 2. pwm/pfm automatic switching 3. ratings use the xc9503 series and peripheral components within the limits of their ratings. xc9503 series 2ch. step-down dc/dc controller ics the xc9503 series is subject to intermittent oscillation in the proximity of the maximum duty if the step-down ratio is low (e. g., from 4.2 v to 3.3 v) or a heavy load is applied where the duty ratio becomes high. check waveforms at ext under your operating conditions. a remedy for this problem is to raise the inductance of coil l or increase the load capacitance cl. if pwm/pfm automatic switching control is selected and the step-down ratio is high (e.g., from 10 v to 1.0 v), the control mode remains in pfm setting over the whole load range, since the duty ratio under continuous-duty condition is smaller than the pfm duty ratio of the xc9503 series. the output voltage's ripple voltage becomes substantially high under heavy load conditions, w ith the xc9503 series appearing to be producing an abnormal oscillation. if this operation becomes a concern, set pins pwm1 and pwm2 to high to set the control mode to pwm setting. for use under the above-mentioned condition, measured data of pwm/pfm automatic switching control shown on the data sheets are available up to iout = 100 ma. 11
? typical performance characteristics (1) output voltage vs. output current * when setting vout1, 2 =1.0v, vin=8.0v, 10.0v, cl should be 94 f (tantalum) + 100 f (os-com) xc9503 series 2ch. step-down dc/dc controller ics fosc=300khz, v out1, 2 =1.0v 0.7 0.8 0.9 1.0 1.1 1.2 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) output voltage1, 2 v out1, 2 (v) pwm control vin=2.7v 3.3v 4.2v 5.0v 6.0v 8.0v 10v l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p focs=300khz, v out1, 2 =1.0v 0.7 0.8 0.9 1.0 1.1 1.2 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) output voltage1, 2 v out1, 2 (v) pwm/pfm switching control vin=2.7v 3.3v l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 4.2v, 6.0v 8.0v 10.0v 5.0v fosc=300khz, v out1, 2 =1.8v 1.5 1.6 1.7 1.8 1.9 2.0 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) output voltage1, 2 v out1, 2 (v) pwm control l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p vin= 2.7v 3.3v 4.2v 5.0v 6.0v 8.0v 10v fosc=300khz, v out1, 2 =1.8v 1.5 1.6 1.7 1.8 1.9 2.0 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) output voltage1, 2 v out1, 2 (v) pwm/pfm switching control l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p vin= 2.7v 3.3v 4.2v 5.0v 6.0v 8.0v 10.0v fosc=300khz, v out1, 2 =2.5v 2.2 2.3 2.4 2.5 2.6 2.7 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) output voltage1, 2 v out1, 2 (v) pwm control l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 10.0v vin= 2.7v 3.3v 4.2v 5.0v 6.0v 8.0v fosc=300khz, v out1, 2 =2.5v 2.2 2.3 2.4 2.5 2.6 2.7 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) output voltage1, 2 v out1, 2 (v) pwm/pfm switching control l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 10.0v 3.3v 4.2v 5.0v 6.0v 8.0v vin=2.7v 12
(1) output voltage vs. output current (continued) * when setting vout1, 2 =1.0v, vin=8.0v, 10.0v, cl should be 94 xc9503 series 2ch. step-down dc/dc controller ics fosc=300khz, v out1, 2 =3.3v 3.0 3.1 3.2 3.3 3.4 3.5 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) output voltage1, 2 v out1, 2 (v) pwm control l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 10.0v vin=4.2v 5.0v 6.0v 8.0v fosc=300khz, v out1, 2 =3.3v 3.0 3.1 3.2 3.3 3.4 3.5 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) output voltage1, 2 v out1, 2 (v) pwm/pfm switching control l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 10.0v vin=4.2v 5.0v 6.0v 8.0v fosc=300khz, v out1, 2 =5.0v 4.7 4.8 4.9 5.0 5.1 5.2 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) output voltage1, 2 v out1, 2 (v) pwm control l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 10.0v vin= 6.0v 8.0v fosc=300khz, v out1, 2 =5.0v 4.7 4.8 4.9 5.0 5.1 5.2 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) output voltage1, 2 v out1, 2 (v) pwm/pfm switching control l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 10.0v vin= 6.0v 8.0v fosc=180khz, v out1, 2 =1.0v 0.7 0.8 0.9 1.0 1.1 1.2 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) output voltage1, 2 v out1, 2 (v) pwm control l=47 h(cdrh6d38), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 10.0v vin=2.7v 3.3v 4.2v 5.0v 6.0v 8.0v fosc=180khz, v out1, 2 =1.0v 0.7 0.8 0.9 1.0 1.1 1.2 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) output voltage1, 2 v out1, 2 (v) pwm/pfm switching control l=47 h(cdrh6d38), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 10.0v 4.2v 5.0v 6.0v 8.0v vin=2.7v 3.0v 13
(1) output voltage vs. output current (continued) * when setting vout1, 2 =1.0v, vin=8.0v, 10.0v, cl should be 94 xc9503 series 2ch. step-down dc/dc controller ics fosc=180khz, v out1, 2 =3.3v 3.0 3.1 3.2 3.3 3.4 3.5 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) output voltage1, 2 v out1, 2 (v) pwm/pfm switching control pwm control l=47 h(cdrh6d38), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p vin=4.2v 5.0v 6.0v 8.0v 10v fosc=180khz, v out1, 2 =5.0v 4.7 4.8 4.9 5.0 5.1 5.2 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) output voltage1, 2 v out1, 2 (v) pwm/pfm switching control pwm control l=47 h(cdrh6d38), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p vin= 6.0v 8.0v 10v fosc=500khz, v out1, 2 =1.0v 0.7 0.8 0.9 1.0 1.1 1.2 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) output voltage1, 2 v out1, 2 (v) pwm control l=10 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p vin=2.7v 3.3v 4.2v 5.0v 6.0v 8.0v 10v fosc=500khz, v out1, 2 =1.0v 0.7 0.8 0.9 1.0 1.1 1.2 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) output voltage1, 2 v out1, 2 (v) pwm/pfm switching control l=10 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p vin=2.7v 3.3v 4.2v 5.0v 6.0v 8.0v 10.0v fosc=500khz, v out1, 2 =3.3v 3.0 3.1 3.2 3.3 3.4 3.5 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) output voltage1, 2 v out1, 2 (v) pwm control l=10 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p vin=4.2v 5.0v 6.0v 8.0v 10v fosc=500khz, v out1, 2 =3.3v 3.0 3.1 3.2 3.3 3.4 3.5 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) output voltage1, 2 v out1, 2 (v) pwm/pfm switching control l=10 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p vin=4.2v 5.0v 6.0v 8.0v 10.0v 14
(1) output voltage vs. output current (continued) xc9503 series 2ch. step-down dc/dc controller ics fosc=500khz, v out1, 2 =5.0v 4.7 4.8 4.9 5.0 5.1 5.2 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) output voltage1, 2 v out1, 2 (v) pwm/pfm switching control pwm control l=10 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p vin= 6.0v 8.0v 10v 15
(2) efficiency vs. output current * when setting vout1, 2 =1.0v, vin=8.0v, 10.0v, cl should be 94 xc9503 series 2ch. step-down dc/dc controller ics fosc=300khz, v out1, 2 =1.0v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) efficiency1, 2 e ffi1, 2 (%) l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p vin=2.7v 4.2v 3.3v pwm/pfm switching control pwm control fosc=300khz, v out1, 2 =1.0v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) efficiency1, 2 e ffi1, 2 (%) l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 8.0v vin=5.0v 10.0v 6.0v pwm/pfm switching control pwm control fosc=300khz, v out1, 2 =1.8v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) efficiency1, 2 e ffi1, 2 (%) l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 3.3v vin= 2.7v 4.2v fosc=300khz, v out1, 2 =1.8v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) efficiency1, 2 e ffi1, 2 (%) l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 6.0v vin=5.0v 8.0v 10.0v fosc=300khz, v out1, 2 =2.5v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) efficiency1, 2 e ffi1, 2 (%) l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 4.2v vin=2.7v 3.3v pwm/pfm switching control pwm control fosc=300khz, v out1, 2 =2.5v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) efficiency1, 2 e ffi1, 2 (%) l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 8.0v vin=5.0v 10v 6.0v pwm/pfm switching control pwm co n t r o l 16
(2) efficiency vs. output current (continued) * when setting vout1, 2 =1.0v, vin=8.0v, 10.0v, cl should be 94 xc9503 series 2ch. step-down dc/dc controller ics fosc=300khz, v out1, 2 =3.3v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) efficiency1, 2 e ffi1, 2 (%) l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 5.0v vin=4.2v 6.0v 8.0v 10.0v pwm/pfm switching control pwm control fosc=300khz, v out1, 2 =5.0v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) efficiency1, 2 e ffi1, 2 (%) l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 8.0v vin=6.0v pwm/pfm switching control pwm co n t r o l 10.0v fosc=180khz, v out1, 2 =1.0v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) efficiency1, 2 e ffi1, 2 (%) l=47 h(cdrh6d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p vin=2.7v 4.2v 3.3v pwm/pfm switching control pwm co n t r o l fosc=180khz, v out1, 2 =1.0v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) efficiency1, 2 e ffi1, 2 (%) l=47 h(cdrh6d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 6.0v vin=5.0v 10v 8.0v pwm/pfm switching control pwm control fosc=180khz, v out1, 2 =3.3v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) efficiency1, 2 e ffi1, 2 (%) l=47 h(cdrh6d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 6.0v vin=4.2v 10v 8.0v 5.0v pwm/pfm switching control pwm control fosc=180khz, v out1, 2 =5.0v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) efficiency1, 2 e ffi1, 2 (%) l=47 h(cdrh6d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 8.0v vin=6.0v 10v pwm/pfm switching control pwm co n t r o l 17
(2) efficiency vs. output current (continued) * when setting vout1, 2 =1.0v, vin=8.0v, 10.0v, cl should be 94 xc9503 series 2ch. step-down dc/dc controller ics fosc=500khz, v out1, 2 =1.0v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) efficiency1, 2 e ffi1, 2 (%) l=10 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 3.3v vin=2.7v pwm/pfm switching control pwm control 4.2v fosc=500khz, v out1, 2 =1.0v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) efficiency1, 2 e ffi1, 2 (%) l=10 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 10v vin=5.0v pwm/pfm switching control pwm co n t r o l 8.0v 6.0v fosc=500khz, v out1, 2 =3.3v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) efficiency1, 2 e ffi1, 2 (%) l=10 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 5.0v vin=4.2v pwm/pfm switching control pwm control 6.0v 8.0v 10.0v fosc=500khz, v out1, 2 =3.3v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) efficiency1, 2 e ffi1, 2 (%) l=10 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 8.0v vin=6.0v pwm/pfm switching control pwm control 10.0v 18
(3) ripple voltage vs. output current * when setting vout1, 2 =1.0v, vin=8.0v, 10.0v, cl should be 94 xc9503 series 2ch. step-down dc/dc controller ics fosc=300khz, v out1, 2 =1.0v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) ripple voltage1, 2 (mv) pwm control l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 4.2v 8.0v 10v vin=2.7v 3.3v 5.0v 6.0v fosc=300khz, v out1, 2 =1.0v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) ripple voltage1, 2 (mv) pwm/pfm switching control l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 5.0v vin=2.7v 3.3v 8.0v 4.2v 10v 6.0v fosc=300khz, v out1, 2 =1.8v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) ripple voltage1, 2 (mv) pwm control l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p vin=2.7v 3.3v 4.2v 5.0v 6.0v 8.0v 10v fosc=300khz, v out1, 2 =1.8v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) ripple voltage1, 2 (mv) pwm/pfm switching control l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 10v vin=2.7v 3.3v 4.2v 5.0v 6.0v 8.0v fosc=300khz, v out1, 2 =2.5v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) ripple voltage1, 2 (mv) pwm control l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p vin=2.7v 3.3v 4.2v 5.0v 6.0v 8.0v 10v fosc=300khz, v out1, 2 =2.5v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) ripple voltage1, 2 (mv) pwm/pfm switching control l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 5.0v vin=2.7v 3.3v 4.2v 6.0v 8.0v 10v
(3) ripple voltage vs. output current (continued) * when setting vout1, 2 =1.0v, vin=8.0v, 10.0v, cl should be 94 xc9503 series 2ch. step-down dc/dc controller ics fosc=300khz, v out1, 2 =3.3v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) ripple voltage1, 2 (mv) pwm control l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p vin=4.2v 5.0v 6.0v 8.0v 10v fosc=300khz, v out1, 2 =3.3v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) ripple voltage1, 2 (mv) pwm/pfm switching control l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 10.0v vin=4.2v 8.0v 6.0v 5.0v fosc=300khz, v out1, 2 =5.0v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) ripple voltage1, 2 (mv) pwm control l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 10v vin=6.0v 8.0v fosc=300khz, v out1, 2 =5.0v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) ripple voltage1, 2 (mv) pwm/pfm switching control l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 10.0v vin=6.0v 8.0v fosc=180khz, v out1, 2 =1.0v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) ripple voltage1, 2 (mv) pwm control l=47 h(cdrh6d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p vin=2.7v 3.3v 4.2v 5.0v 6.0v 8.0v 10v fosc=180khz, v out1, 2 =1.0v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) ripple voltage1, 2 (mv) vin=2.7v pwm/pfm switching control l=47 h(cdrh6d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 6.0v 10v 8.0v 5.0v 4.2v 3.3v
(3) ripple voltage vs. output current (continued) * when setting vout1, 2 =1.0v, vin=8.0v, 10.0v, cl should be 94 xc9503 series 2ch. step-down dc/dc controller ics fosc=180khz, v out1, 2 =3.3v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) ripple voltage1, 2 (mv) pwm control l=47 h(cdrh6d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 8.0v vin=4.2v 6.0v 10v 5.0v fosc=180khz, v out1, 2 =3.3v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) ripple voltage1, 2 (mv) pwm/pfm switching control l=47 h(cdrh6d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 5.0v vin=4.2v 10v 8.0v 6.0v fosc=180khz, v out1, 2 =5.0v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) ripple voltage1, 2 (mv) pwm control l=47 h(cdrh6d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 10v vin=6.0v 8.0v fosc=180khz, v out1, 2 =5.0v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) ripple voltage1, 2 (mv) pwm/pfm switching control l=47 h(cdrh6d28), cl=94 f(tantaium) sd:cms02, tr:xp162a12a6p 10v vin=6.0v 8.0v fosc=500khz, v out1, 2 =1.0v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) ripple voltage1, 2 (mv) pwm control l=10 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p vin=2.7v 3.3v 4.2v 5.0v 6.0v 8.0v 10v fosc=500khz, v out1, 2 =1.0v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) ripple voltage1, 2 (mv) pwm/pfm switching control l=10 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 4.2v 6.0v 5.0v 10v 8.0v vin=2.7v 3.3v
(3) ripple voltage vs. output current (continued) 22 xc9503 series 2ch. step-down dc/dc controller ics fosc=500khz, v out1, 2 =3.3v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) ripple voltage1, 2 (mv) pwm control l=10 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 10v vin=4.2v 5.0v 6.0v 8.0v fosc=500khz, v out1, 2 =3.3v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) ripple voltage1, 2 (mv) pwm/pfm switching control l=10 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 10v vin=4.2v 8.0v 6.0v 5.0v fosc=500khz, v out1, 2 =5.0v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) ripple voltage1, 2 (mv) pwm control l=10 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 8.0v vin=6.0v 10v fosc=500khz, v out1, 2 =5.0v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) ripple voltage1, 2 (mv) pwm/pfm switching control l=10 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 8.0v vin=6.0v 10v
(4) supply current 1 vs. supply voltage (5) supply current 1_1 vs. supply voltage (6) supply current 1_2 vs. supply voltage (7) supply current 2 vs. supply voltage (8) stand-by current vs. supply voltage (9) oscillation frequency vs. supply voltage 23 xc9503 series 2ch. step-down dc/dc controller ics xc9503b092 (180khz) 0 50 100 150 200 250 0246810 supply voltage vdd (v) supply current 1 idd1 ( a) xc9503b092 (180khz) 0 50 100 150 200 250 0246810 supply voltage vdd (v) suppy current 1-1 idd1-1 ( a) topr=85 o c 25 o c - 40 o c topr=85 o c 25 o c - 40 o c xc9503b092 (180khz) 0 50 100 150 200 250 0246810 supply voltage vdd (v) supply current 1-2 idd1-2 ( a) xc9503b092 (180khz) 0 50 100 150 200 250 0246810 supply voltage vdd (v) supply current 2 idd2 ( a) xc9503b092 (180khz) 0 2 4 6 8 10 0246810 suppy voltage vdd (v) stand-by curret istb ( a) xc9503b093(180khz) 240 270 300 330 360 0246810 supply voltage vdd (v) oscillaltion frequency fosc (khz) topr=85 o c 25 o c - 40 o c topr=85 o c 25 o c - 40 o c topr=85 o c 25 o c - 40 o c topr=85 o c 25 o c - 40 o c
(10) en1, 2 'high' 'low' voltage vs. supply voltage (11) pwm1, 2 'high' 'low' voltage vs. supply voltage (12) pfm duty ratio 1, 2 vs. supply voltage (13) output voltage vs. ambient temperature (14) ext1, 2 'high' on resistance vs. supply voltage (14) ext1, 2 'low' on resistance vs. supply voltage 24 xc9503 series 2ch. step-down dc/dc controller ics xc9503b093 (300khz) 0 0.2 0.4 0.6 0.8 0246810 supply voltage vdd (v) en1, 2 'h' 'l' voltage ven 1, 2 (v) xc9503b093 (300khz) 0 0.2 0.4 0.6 0.8 0246810 supply voltage vdd (v) pwm1, 2 'h' 'l' voltage v pwm1 , 2 (v) xc9503b093(300khz) 20 25 30 35 40 0246810 supply voltage vdd (v) pfm duty ratio 1, 2 (%) xc9503b093(300khz) 3.0 3.1 3.2 3.3 3.4 3.5 0246810 supply voltage vdd (v) output voltage v out1, 2 (v) xc9503b092 (180khz) 0 10 20 30 40 50 0246810 supply voltage vdd (v) ext1, 2 'high' on resistance ( ? ) xc9503b092 (180khz) 0 10 20 30 40 50 0246810 supply voltage vdd (v) ext1, 2 'low' on resistance ( ? ) 85 o c - 40 o c topr=25 o c - 40 o c 85 o c topr=25 o c vin=5.0v iout1, 2 =200ma l=22 h(cdrh5d28), cl=94 f (tantalum) sd:cms02 tr:xp162a12a6 topr=85 o c 25 o c - 40 o c topr=85 o c 25 o c - 40 o c topr=85 o c 25 o c - 40 o c
(16) soft start time 1, 2 vs. supply voltage 25 xc9503 series 2ch. step-down dc/dc controller ics xc9503b092 (180khz) 0 5 10 15 20 25 0246810 supply voltage vdd (v) soft start time 1, 2 tss1, 2 (msec)
! load transient response < vout1, 2 = 3.3 v, vin = 5.0v iout1, 2 = 100 ! 300ma > " pwm control fosc = 300khz, vout1, 2 = 3.3v fosc = 300khz, vout1, 2 = 3.3v vin = 5.0v, iout = 1, 2 = 100 " 300ma vin = 5.0v, iout = 1, 2 = 300ma " 100 " pwm / pfm switching control fosc = 300khz, vout1, 2 = 3.3v fosc = 300khz, vout1, 2 = 3.3v vin = 5.0v, iout = 1, 2 = 100 " 300ma vin = 5.0v, iout = 1, 2 = 300ma " 100 xc9503 series 2ch. step-down dc/dc controller ics
! load transient response < vout1, 2 = 3.3 v, vin = 5.0v iout1, 2 = 10ma ! 300ma > " pwm control fosc = 300khz, vout1, 2 = 3.3v fosc = 300khz, vout1, 2 = 3.3v vin = 5.0v, iout = 1, 2 = 10ma " 300ma vin = 5.0v, iout = 1, 2 = 300ma " 10ma ch1 3.3v 3.3v ch1 300ma 300ma ch2 10ma ch2 10ma ch1 : vout1, 2, ac-coupled, 50mv/div ch1 : vout1, 2, ac-coupled, 50mv/div ch2 : iout1, 2, 150ma/div ch2 : iout1, 2, 150ma/div " pwm / pfm switching control fosc = 300khz, vout1, 2 = 3.3v fosc = 300khz, vout1, 2 = 3.3v vin = 5.0v, iout = 1, 2 = 10ma " 300ma vin = 5.0v, iout = 1, 2 = 300ma " 10ma ch1 3.3v ch1 3.3v 300ma 300ma ch2 10ma ch2 10ma ch1 : vout1, 2, ac-coupled, 100mv/div ch1 : vout1, 2, ac-coupled, 50mv/div ch2 : iout1, 2, 150ma/div ch2 : iout1, 2, 150ma/div 27 200 xc9503 series 2ch. step-down dc/dc controller ics
! load transient response < vout1, 2 = 0.9 v, vin = 3.3v iout1, 2 = 100 ! 300ma > " pwm control fosc = 300khz, vout1, 2 = 0.9v fosc = 300khz, vout1, 2 = 0.9v vin = 3.3v, iout = 1, 2 = 100 " 300ma vin = 3.3v, iout = 1, 2 = 300ma " 100 " pwm / pfm switching control fosc = 300khz, vout1, 2 = 0.9v fosc = 300khz, vout1, 2 = 0.9v vin = 3.3v, iout = 1, 2 = 100 " 300ma vin = 3.3v, iout = 1, 2 = 300ma " 100 xc9503 series 2ch. step-down dc/dc controller ics 200
! load transient response < vout1, 2 = 0.9 v, vin = 3.3v iout1, 2 = 10ma ! 300ma > " pwm control fosc = 300khz, vout1, 2 = 0.9v fosc = 300khz, vout1, 2 = 0.9v vin = 3.3v, iout = 1, 2 = 10ma " 300ma vin = 3.3v, iout = 1, 2 = 300ma " 10ma ch1 0.9v ch1 0.9v 300ma 300ma ch2 10ma ch2 10ma ch1 : vout1, 2, ac-coupled, 20mv/div ch1 : vout1, 2, ac-coupled, 20mv/div ch2 : iout1, 2, 150ma/div ch2 : iout1, 2, 150ma/div " pwm / pfm switching control fosc = 300khz, vout1, 2 = 0.9v fosc = 300khz, vout1, 2 = 0.9v vin = 3.3v, iout = 1, 2 = 10ma " 300ma vin = 3.3v, iout = 1, 2 = 300ma " 10ma ch1 0.9v ch1 0.9v 300ma 300ma ch2 10ma ch2 10ma ch1 : vout1, 2, ac-coupled, 20mv/div ch1 : vout1, 2, ac-coupled, 20mv/div ch2 : iout1, 2, 150ma/div ch2 : iout1, 2, 150ma/div 29 1 00 xc9503 series 2ch. step-down dc/dc controller ics
! load transient response < pwm control ! pwm / pfm switching control > fosc = 300khz, vout1, 2 = 3.3v fosc = 300khz, vout1, 2 = 3.3v vin = 5.0v, iout = 1, 2 = 5ma pwm1, 2 'low' " 'high' vin = 5.0v, iout = 1, 2 = 5ma pwm1, 2 'high' " 'low' ch1 3.3v ch1 3.3v 0.65v 0.65v ch2 0v ch2 0v ch1 : vout1, 2, ac-coupled, 10mv/div ch1 : vout1, 2, ac-coupled, 20mv/div ch2 : iout1, 2, 0.5v/div ch2 : iout1, 2, 0.5v/div < soft start wave form > fosc = 300khz, vout1, 2 = 3.3v fosc = 300khz, vout1, 2 = 3.3v vin = 5.0v, iout = 1, 2 = 300ma en1, 2 'low' " 'high' vin = 5.0v, iout = 1, 2 = 100ma en1, 2 'low' " 'high' cin=47 xc9503 series 2ch. step-down dc/dc controller ics 4 00 2

▲Up To Search▲

Price & Availability of XC9503B092AL

	To Download XC9503B092AL Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .