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'2002.1.25 boost type voltage regulator with reset r1151n series rev. 1.11 - 1 - outline the r1151n series are cmos-based boost type voltage regulator ics with high output voltage accuracy, low supply current, and high ripple rejection. each of these voltage regulator controllers consists of a voltage reference unit, an error amplifier , comparators, resistors for output and reset voltage setting, a current limit protection circuit, and a chip enable circuit. in addition to low consumption current by cmos process, the chip enable function prolongs the battery life. dynamic response and ripple rejection of the r1151n series are excellent, further these are low noise type, plus maximum operating input voltage tolerance is up to 18.5v, thus these ics are very suitable for the power supply for hand-held equipment and other power management applications using ac adapter input voltage. the output voltage of these ics is internally fixed with high accuracy. since the package for these ics are sot-23-6 (mini- mold) package, high density mounting of the ics on boards is possible. features z ultra-low supply current......................................... typ. 70 a (i out =0ma) z standby mode ........................................................... typ. 0.1 a z low dropout voltage ................................................ typ. 0.1v(i out =100ma *depends on external transistor) z high ripple rejection ............................................... typ. 60db(f=1khz) z low temperature-drift coefficient of output voltage typ. 100ppm/ c z high output voltage accuracy.................................. 2.0% z excellent dynamic response z small package ..........................................................sot-23-5(mini-mold) z output voltage...........................................................stepwise setting with a step of 0.1v in the range of 2 .5v to 9.0v z built-in chip enable circuit ( 2 types; a: active low , b: active high) z output capacitor .......................................................tantalum type recommendation (or ceramic + series resist or) z built-in output voltage detector.................................with delay (c version) z detector threshold tolerance ................................... 2.5% z detector threshold voltage ...................................... stepwise setting with a step of 0.1v in the range of 1.7v to 8.0v z operating input voltage ............................................max. 18.5v applications z power source for handheld equipment such as cameras and videos. z power source for home appliances. z power source for battery-powered equipment.
rev. 1.11 - 2 - block diagrams r1151nxxxb v dd v out gnd 5 2 6 3 current limit ce ext 1 4 v det vref + - vref + - r1151nxxxc v dd v out gnd 5 2 6 3 current limit cd ext 1 4 v det vref + - vref + -
rev. 1.11 - 3 - selection guide the output voltage, mask option code, and the taping type for the ics can be selected at the user's request. the selection can be made with designating the part number as shown below; r1151nxxxx-xx part number a b c code contents a code number for voltage setting b setting mask option : a: with ce (active at ?l? type) b: with ce (active at ?h? type) c: with the pin for external capacitor to set the output delay of voltage detector c designation of taping type : ex. tr (refer to taping specifications.) pin configuration sot-23-6 6 4 123 5 vdd gnd ce/cd vout vdet ext (mark side) pin descriptions pin no. symbol description 1 ext external transistor drive pin 2v det voltage detector output pin 3v out voltage regulator output pin 4 ce or ce chip enable pin(a/b version) 4 cd pin for external capacitor to set output delay of voltage detector(c version) 5 gnd ground pin 6v dd input pin
rev. 1.11 - 4 - absolute maximum ratings item symbol rating unit input voltage v in 20 v input voltage( ce /ce/cd pin) v ce/cd -0.3 ~ v in +0.3 v output voltage(v out pin) v out -0.3 ~ v in +0.3 v output voltage(ext pin) v ext -0.3 ~ v in +0.3 v output voltage(v det pin) v det -0.3 ~ v in +0.3 v ext output current i ext 30 ma power dissipation p d 150 mw operating temperature range topt -40 ~ 85 c storage temperature range tstg -55 ~ 125 c electrical characteristics r1151nxxxa/b topt=25 c symbol item conditions min. typ. max. unit v out output voltage v in = set v out +1v i out = 50ma v out 0.98 v out 1.02 v i out output current v in - v out = 1.0v 1 note a ? v out / ? i out load regulation v in = set v out +1v 1ma i out 100ma refer to the load regulation table v dif dropout voltage i out = 100ma 0.1 note 0.2 v i ss supply current v in = set v out +1v, i out = 0ma 70 100 a istandby supply current (standby) v in = 18.5v 15 a i extleak ext leakage current 0.5 a ? v out / ? v in line regulation set v out +0.5v v in 18.5v i out = 50ma 0 0.02 0.10 %/v rr ripple rejection f = 1khz, ripple 0.5vp-p v in = set v out +1v 60 db v in input voltage 18.5 v ? v out / ? t output voltage temperature coefficient i out = 10ma -40 c topt 85 c 100 ppm / c ilim current limit base current i b of pnp tr. v in - v out = 1.0v 827ma i rpt short current limit base current i b of pnp tr. v out = 0v 0.7 ma r ud ce /ce pull-up/down resistance 2m ? v ceh ce /ce input voltage ?h? 1.5 v in v v cel ce /ce input voltage ?l? 00.25v -v det detector threshold -v det 0.975 -v det 1.025 v v hys detector threshold hysteresis range -v det 0.03 -v det 0.05 -v det 0.07 v i out2 output current 2 v dd = 1.5v, v ds = 0.5v 2.0 5.0 10.0 ma ? v det / ? t detector threshold temperature coefficient -40 c topt 85 c 100 ppm / c tplh output delay time 0.1 ms v ddl minimum operating voltage 0.9 1.1 v note: this item depends on the capability of external pnp transistor. use low saturation type transistor with hfe value range o f 100 to 300.
rev. 1.11 - 5 - r1151nxxxc topt=25 c symbol item conditions min. typ. max. unit v out output voltage v in = set v out +1v i out = 50ma v out 0.98 v out 1.02 v i out output current v in - v out = 1.0v 1 *note1 a ? v out / ? i out load regulation v in = set v out +1v 1ma i out 100ma refer to the load regulation table v dif dropout voltage i out = 100ma 0.1 *note1 v i ss supply current v in = set v out +1v, i out = 0ma 70 100 a i extleak ext leakage current 0.5 a ? v out / ? v in line regulation set v out +0.5v v in 18.5v i out = 50ma 0.00 0.02 0.10 %/v rr ripple rejection f = 1khz, ripple 0.5vp-p v in = set v out +1v 60 db v in input voltage 18.5 v ? v out / ? t output voltage temperature coefficient i out = 10ma -40 c top t 85 c 100 ppm / c ilim current limit base current i b of pnp tr. v in - v out = 1.0v 827ma i rpt short current limit base current i b of pnp tr. v out = 0v 0.7 ma -v det detector threshold -v det 0.975 -v det 1.025 v v hys detector threshold hysteresis range -v det 0.03 -v det 0.05 -v det 0.07 v i out2 output current 2 v dd = 1.5v, v ds = 0.5v 2.0 5.0 10.0 ma ? v det / ? t detector threshold temperature coefficient -40 c topt 85 c 100 ppm / c tplh output delay time cd=220pf *note2 0.9 1.6 2.7 ms v ddl minimum operating voltage 0.9 1.1 v note1: this item depends on the capability of external pnp transistor. use low saturation type transistor with hfe value range of 100 to 300. note2: v det pin is pulled-up to v dd via 470k ? resistance. the time is between the rising edge of v out level from 0.9v to (+v det )+2.0v and the reaching point to ((+v det )+2.0v)/2 of the v det output voltage. z load regulation table load regulation ? v out / ? i out (mv) output voltage v out (v) typ. max. 2.5 to 3.3 20 60 3.4 to 5.0 30 90 5.1 to 7.0 40 130 7.1 to 9.0 50 160 operation in these ics, fluctuation of output voltage, v out is detected by the feed-back registers, and the result is compared with a reference voltage with the error amplifier and control the base current of an external pnp transistor so that a constant voltag e is output. the base current is monitored with the base current limit circuit. if the base current may be too large, the protect ion circuit works, further, output voltage is monitored with the built-in voltage detector. if the set detector threshold voltage i s detected, reset signal will be output.
rev. 1.11 - 6 - technical notes when using these ics, consider the following points: in these ics, phase compensation is made for securing stable operation even if the load current is varied. for this purpose, be sure to use as much as 10 f capacitor as c l with good frequency characteristics and esr (equivalent series resistance). the best suitable equivalent series resistor value (esr) is approximately 1 ? . if the esr of the output capacitor is too large, output may be unstable, therefore fully evaluation is necessary. make v dd and gnd line sufficient. when their impedance of these is high, noise pickup or unstable operation may be the result. connect a capacitor with a capacitance value of as much as 10 f between v dd and gnd as close as possible to these pins. set external components, especially output capacitor, as close as possible to the ics. refer to the next equation to calculate the output delay time of c version and decide the capacitance value for the delay time. tplh =2.31 c/(300 10 -9 ) c: capacitance value (f) recommended pull-up resistance (r1) value is 470k ? . if the value is too small, released voltage may be shift, therefore, use 10k ? or more value resistor. test circuits r1151nxxc 3 6 5 1 2 4 r1 c1 c2 pnp vin vdet iout r1151nxxc 3 6 5 1 2 4 c1 c2 pnp vin iout fig.1 standard test circuit r1=470k ? c1=220pf, c2=10 f fig.2 supply current test circuit c1=220pf, c2=10 f r1151nxxc 3 6 5 1 2 4 c1 c2 pnp vin iout p.g. r1151nxxc 3 6 5 1 2 4 c1 c2 pnp vin iout p.g. fig.3 ripple rejection, line transient response test circuit c1=220pf, c2=10 f fig.4 load transient response test circuit c1=220pf, c2=10 f
rev. 1.11 - 7 - typical application in out pnp tr v dd ext cd gnd v out ci + cl + r1151nxxxc v det reset cd r1 + (external components) c1 10 f r1=470k ? pnp tr.: 2sa1441, 2sb940, 2sb703 cl 10 f typical characteristics 1) output voltage vs. output current (topt=25 c) a. external tr.: 2sa1441 r1151n (vr=9.0v) 0.00 1.00 2.00 3.00 4.00 5.00 6.00 7.00 8.00 9.00 10.00 0 500 1000 1500 2000 2500 3000 3500 4000 output current i out (ma) output voltage v rout (v) v in =9.3v v in =9.5v v in =10v v in =11v r1151n (vr=5.0v) 0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 6.00 0 500 1000 1500 2000 2500 3000 3500 4000 output current i out (ma) output voltage v rout (v) v in =5.3v v in =5.5v v in =6v v in =7v
rev. 1.11 - 8 - r1151n (vr=3.3v) 0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 3.00 3.25 3.50 0 500 1000 1500 2000 2500 3000 3500 4000 output current i out (ma) output voltage v rout (v) v in =3.6v v in =3.8v v in =4.3v v in =5.3v r1151n (vr=2.5v) 0.00 0.50 1.00 1.50 2.00 2.50 3.00 0 500 1000 1500 2000 2500 3000 3500 4000 output current i out (ma output voltage v rout (v) v dd =2.8v v dd =3.0v v dd =3.5v v dd =4.5v b. external tr.:2sb940 r1151n (vr=9.0v) 0.00 1.00 2.00 3.00 4.00 5.00 6.00 7.00 8.00 9.00 10.00 0 100 200 300 400 500 600 700 800 900 100 0 110 0 output current i out (ma) output voltage v rout (v) v dd =9.3v v dd =9.5v v dd =10.0v v dd =11.0v r1151n (vr=5.0v) 0.00 1.00 2.00 3.00 4.00 5.00 6.00 0 100 200 300 400 500 600 700 800 900 100 0 110 0 output current i out (ma) output voltage v rout (v) v dd =5.3v v dd =5.5v v dd =6.0v v dd =7.0v r1151n (vr=3.3v) 0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 4.00 0 100 200 300 400 500 600 700 800 900 100 0 110 0 output current i out (ma) output voltage v rout (v) v dd =3.6v v dd =3.8v v dd =4.3v v dd =5.3v r1151n (vr=2.5v) 0.00 0.50 1.00 1.50 2.00 2.50 3.00 0 100 200 300 400 500 600 700 800 900 100 0 110 0 output current i out (ma) output voltage v rout (v) v dd =2.8v v dd =3.0v v dd =3.5v v dd =4.5v
rev. 1.11 - 9 - c. external tr.:2sb703 r1151n (vr=9.0v) 0.00 1.00 2.00 3.00 4.00 5.00 6.00 7.00 8.00 9.00 10.00 0 100 200 300 400 500 600 700 800 900 100 0 110 0 output current i out (ma) output voltage v rout (v) v in =9.3v v in =9.5v v in =10.0v v in =11.0v r1151n (vr=5.0v) 0.00 1.00 2.00 3.00 4.00 5.00 6.00 0 100 200 300 400 500 600 700 800 900 100 0 110 0 output current i out (ma) output voltage v rout (v) v in =5.3v v in =5.5v v in =6.0v v in =7.0v r1151n (vr=3.3v) 0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 0 100 200 300 400 500 600 700 800 900 100 0 110 0 output current i out (ma) output voltage v rout (v) v in =3.6v v in =3.8v v in =4.3v v in =5.3v r1151n (vr=2.5v) 0.00 0.50 1.00 1.50 2.00 2.50 3.00 0 100 200 300 400 500 600 700 800 900 100 0 110 0 output current i out (ma) output voltage v rout (v) v in =2.8v v in =3.0v v in =3.5v v in =4.5v d. output voltage vs. base current (topt=25 c) vr=9.0v 0.00 1.00 2.00 3.00 4.00 5.00 6.00 7.00 8.00 9.00 10.00 0 2 4 6 8 10 12 14 16 18 base current i ext (ma) output voltage v rout (v) vr=5.0v 0.00 1.00 2.00 3.00 4.00 5.00 6.00 024681012141618 base current i ext (ma) output voltage v rout (v)
rev. 1.11 - 10 - vr=3.3v 0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 4.00 0246810121416 base current i ext (ma) output voltage v rout (v) vr=2.5v 0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 3.00 024681012141618 base current i ext (ma) output voltage v rout (v) 2) output voltage vs. input voltage (topt=25 c) external transistor: 2sa1441 r1151n (vr=5.0v) 1.00 2.00 3.00 4.00 5.00 6.00 0 1 2 3 4 5 6 7 8 9 101112131415161718 input voltage v in (v) output voltage v out (v) i out =0ma i out =500ma r1151n (vr=3.3v) 1.00 1.50 2.00 2.50 3.00 3.50 4.00 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 input voltage v in (v) output voltage v out (v) i out =0ma i out =500ma r1151n (vr=2.5v) 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 3.00 0123456789101112131415161718 input voltage v in (v) output voltage v out (v) i out =0ma i out =500ma
rev. 1.11 - 11 - 3) output voltage vs. temperature r1151n (vr=5.0v) 4.875 4.925 4.975 5.025 5.075 5.125 -40 -15 10 35 60 85 temperature topt output voltage v rout (v) v in =6.0v i out =80ma r1151n (vr=3.3v) 3.215 3.235 3.255 3.275 3.295 3.315 3.335 3.355 3.375 -40 -15 10 35 60 85 temperature topt output voltage v rout (v) v in =4.3v i out =80ma r1151n (vr=2.5v) 2.438 2.463 2.488 2.513 2.538 -40 -15 10 35 60 85 temperature topt output voltage v rout (v) v in =3.5v i out =80ma 4) supply current vs. input voltage external tr.:2sa1441 r1151n (vr=9.0v,-vd=8.0v) 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 0123456789101112131415161718 input voltage v in (v) supply current i ss (ua) i out =0ma r1151n (vr=5.0v,-vd=4.2v) 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 0123456789101112131415161718 input voltage v in (v) supply current i ss (ua) i out =0ma ( c ) ( c ) ( c )
rev. 1.11 - 12 - r1151n (vr=3.3v,-vd=2.9v) 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 0123456789101112131415161718 input voltage v in (v) supply current i ss (ua) i out =0ma 5) supply current vs. temperature a. external tr.:2sa1441 r1151n (vr=9.0v) 0 10 20 30 40 50 60 70 80 90 100 -40 -15 10 35 60 85 temperature topt supply current i ss (ua) i out =0ma v in =10v r1151n (vr=5.0v) 0 10 20 30 40 50 60 70 80 90 100 -40 -15 10 35 60 85 temperature topt supply current i ss (ua) i out =0ma v in =6v r1151n (vr=3.3v) 0 10 20 30 40 50 60 70 80 90 100 -40 -15 10 35 60 85 temperature topt supply current i ss (ua) r1151n (vr=2.5v) 0 10 20 30 40 50 60 70 80 90 100 -40 -15 10 35 60 85 temperature topt supply current i ss (ua) ( c ) ( c ) ( c ) ( c )
rev. 1.11 - 13 - b. external tr.:2sb703 r1151n (vr=9.0v) 0 10 20 30 40 50 60 70 80 90 100 -40 -15 10 35 60 85 temperature topt supply current i ss (ua) r1151n (vr=5.0v) 0 10 20 30 40 50 60 70 80 90 100 -40 -15 10 35 60 85 temperature topt supply current i ss (ua) r1151n (vr=3.3v) 0 10 20 30 40 50 60 70 80 90 100 -40 -15 10 35 60 85 temperature topt supply current i ss (ua) r1151n (vr=2.5v) 0 10 20 30 40 50 60 70 80 90 100 -40 -15 10 35 60 85 temperature topt supply current i ss (ua) 6) ripple rejection vs. ripple frequency (topt=25 c) r1151n (vr=9.0v) 0 10 20 30 40 50 60 70 80 0.01 0.1 1 10 100 ripple frequency (khz) ripple rejection rr(db) 2sa1441 2sb703 2sb940 v in =10vdc+0.5vp-p,iout=50ma,cl=10uf r1151n (vr=5.0v) 0 10 20 30 40 50 60 70 80 0.01 0.1 1 10 100 ripple frequency (khz) ripple rejection rr(db) 2sa1441 2sb703 2sb940 v in =6vdc+0.5vp-p,iout=50ma,cl=10uf ( c ) ( c ) ( c ) ( c )
rev. 1.11 - 14 - r1151n (vr=3.3v) 0 10 20 30 40 50 60 70 80 0.01 0.1 1 10 100 ripple frequency(khz) ripple rejection rr(db) 2sa1441 2sb703 2sb940 v in =4.3vdc+0.5vp-p,iout=50ma,cl=10uf r1151n (vr=2.5v) 0 10 20 30 40 50 60 70 0.01 0.1 1 10 100 ripple frequency (khz) ripple rejection rr(db) 2sa1441 2sb703 2sb940 v in =3.5vdc+0.5vp-p,iout=50ma,cl=10uf 7)ripple rejection vs. temperature r1151n (vr=5.0v) 55 57 59 61 63 65 67 69 71 73 75 -40 -15 10 35 60 85 temperature topt ripple rejection rr (db) 2sa1441 2sb703 2sb940 v in =6vdc+0.5vp-p,iout=50ma,cl=10uf r1151n (vr=3.3v) 55 57 59 61 63 65 67 69 71 73 75 -40 -15 10 35 60 85 temperature topt ripple rejection rr (db) 2sa1441 2sb703 2sb940 v in =4.3vdc+0.5vp-p,iout=50ma,cl=10uf r1151n (vr=2.5v) 45 50 55 60 65 70 -40 -15 10 35 60 85 temperature topt ripple rejection rr (db) 2sa1441 2sb703 2sb940 v in =3.5vdc+0.5vp-p,iout=50ma,cl=10uf ( c ) ( c ) ( c )
rev. 1.11 - 15 - 8)input transient response(topt=25 c) a. external tr.:2sa1441 r1151n (vr=5.0v) 4.990 5.000 5.010 5.020 5.030 0 25 50 75 100 125 150 175 200 225 250 time (us) output voltage v out (v) 0 1 2 3 4 5 6 7 8 input voltage v in (v) i out =50ma cout=ceramic 10uf input voltage output voltage r1151n (vr=3.3v) 3.280 3.290 3.300 3.310 3.320 3.330 3.340 0 25 50 75 100 125 150 175 200 225 250 time (u output voltage v out (v) 0 1 2 3 4 5 6 input voltage v in (v) i out =50ma cout=ceramic 10uf input voltage output voltage r1151n (vr=2.5v) 2.485 2.495 2.505 2.515 2.525 2.535 0 25 50 75 100 125 150 175 200 225 250 time u output voltage v out (v) 0 1 2 3 4 5 input voltage v in (v) i out =50ma cout=ceramic 10uf input voltage output voltage b. external tr.: 2sb703 r1151n (vr=5.0v) 4.990 4.995 5.000 5.005 5.010 5.015 5.020 5.025 5.030 0 25 50 75 100 125 150 175 200 225 250 time (us) output voltage v out (v) 0 1 2 3 4 5 6 7 8 input voltage v in (v) i out =50ma cout=ceramic 10uf input voltage output voltage r1151n (vr=3.3v) 3.280 3.290 3.300 3.310 3.320 3.330 3.340 0 25 50 75 100 125 150 175 200 225 250 time (u output voltage v out (v) 0 1 2 3 4 5 6 input voltage v in (v) i out =50ma cout=ceramic 10uf input voltage output voltage
rev. 1.11 - 16 - r1151n (vr=2.5v) 2.485 2.495 2.505 2.515 2.525 2.535 0 25 50 75 100 125 150 175 200 225 250 time u output voltage v out (v) 0 1 2 3 4 5 input voltage v in (v) i out =50ma cout=ceramic 10uf input voltage output voltage c. external tr. : 2sb940 r1151n (vr=5.0v) 4.990 4.995 5.000 5.005 5.010 5.015 5.020 5.025 5.030 0 25 50 75 100 125 150 175 200 225 250 time (us) output voltage v out (v) 0 1 2 3 4 5 6 7 8 input voltage v in (v) i out =50ma cout=ceramic 10uf input voltage output voltage r1151n (vr=3.3v) 3.280 3.290 3.300 3.310 3.320 3.330 3.340 0 25 50 75 100 125 150 175 200 225 250 time (u output voltage v out (v) 0 1 2 3 4 5 6 input voltage v in (v) i out =50ma cout=ceramic 10uf input voltage output voltage r1151n (vr=2.5v) 2.485 2.495 2.505 2.515 2.525 2.535 0 25 50 75 100 125 150 175 200 225 250 time u output voltage v out (v) 0 1 2 3 4 5 input voltage v in (v) i out =50ma cout=ceramic 10uf input voltage output voltage
rev. 1.11 - 17 - 9)load transient response (topt=25 c) a: external tr.: 2sa1441 r1151n (vr=5.0v) 4.99 5.00 5.01 5.02 5.03 5.04 5.05 0 100 200 300 400 500 600 700 800 900 100 0 time (us) output voltage v out (v) 0 20 40 60 80 100 120 output current i out (ma) v in =6.0v c in =ceramic 4.7uf c out =ceramic 10uf output current output voltage r1151n (vr=3.3v) 3.29 3.30 3.31 3.32 3.33 3.34 3.35 0 100 200 300 400 500 600 700 800 900 100 0 time (us) output voltage v out (v) 0 20 40 60 80 100 120 output current i out (ma) v in =4.3v c in =ceramic 4.7uf c out =ceramic 10uf output current output current r1151n (vr=2.5v) 2.49 2.50 2.51 2.52 2.53 2.54 2.55 0 100 200 300 400 500 600 700 800 900 100 0 time (us) output voltage v out (v) 0 20 40 60 80 100 120 output current i out (ma) v in =3.5v c in =ceramic 4.7uf c out =ceramic 10uf output current output voltage b. external tr.: 2sb703 r1151n (vr=5.0v) 4.99 5.00 5.01 5.02 5.03 5.04 5.05 0 100 200 300 400 500 600 700 800 900 100 0 time (us) output voltage v out (v) 0 20 40 60 80 100 120 output current i out (ma) v in =6.0v c in =ceramic 4.7uf c out =ceramic 10uf output current output voltage r1151n (vr=3.3v) 3.29 3.30 3.31 3.32 3.33 3.34 3.35 0 100 200 300 400 500 600 700 800 900 100 0 time (us) output voltage v out (v) 0 20 40 60 80 100 120 output current i out (ma) v in =4.3v c in =ceramic 4.7uf c out =ceramic 10uf output current output voltage
rev. 1.11 - 18 - r1151n (vr=2.5v) 2.49 2.50 2.51 2.52 2.53 2.54 2.55 0 100 200 300 400 500 600 700 800 900 100 0 time (us) output voltage v out (v) 0 20 40 60 80 100 120 output current i out (ma) v in =3.5v c in =ceramic 4.7uf c out =ceramic 10uf output current output voltage 10) detector threshold vs. temperature r1151n (-v det =8.0v) 7.80 7.90 8.00 8.10 8.20 8.30 8.40 8.50 8.60 8.70 -40 -15 10 35 60 85 temperature topt detector threshold v det (v) r1151n (-v det =4.2v) 4.00 4.10 4.20 4.30 4.40 4.50 4.60 -40 -15 10 35 60 85 temperature topt detector threshold v det (v) r1151n (-v det =2.9v) 2.80 2.85 2.90 2.95 3.00 3.05 3.10 -40 -15 10 35 60 85 temperature topt detector threshold v det (v) r1151n (-v det =1.7v) 1.60 1.65 1.70 1.75 1.80 1.85 -40 -15 10 35 60 85 temperature topt detector threshold v det (v) ( c ) ( c ) ( c ) ( c )
rev. 1.11 - 19 - 11)v det output voltage vs. input voltage r1151n(-v det =8.0v pull-up to v dd ) 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 0123456789 input voltage v in v) v det output voltage vd out v) topt=85 topt=25 topt=-40 r1151n(-v det =8.0v pull-up to 5v) 0.00 1.00 2.00 3.00 4.00 5.00 6.00 0123456789 input voltage v in (v) v det output voltage vd out (v) topt=-40 topt=25 topt=85 r1151n(-v det =4.2v pull-up to v dd) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 00.511.522.533.544.55 input voltage v in (v) v det output voltage vd out (v) topt= \ 40 topt=25 topt=85 r1151n(-v det =4.2v pull-up to 5v) 0.0 1.0 2.0 3.0 4.0 5.0 6.0 00.511.522.533.544.555.56 input voltage v in (v) v det output voltage v dout (v) topt=85 topt=25 topt=-40 r1151n(-v det =2.9v pull-up to v dd ) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 00.511.522.533.54 input voltage v in (v) v det output voltage vd out (v) topt=85 topt=25 topt=-40 r1151n(-v det =2.9v pull-up to 5v) 0.0 1.0 2.0 3.0 4.0 5.0 6.0 00.511.522.533.544.555.56 input voltage v in (v) v det output voltage v dout (v) topt=85 topt=25 topt=-40 c c c c c c c c c c c c c c c c c c
rev. 1.11 - 20 - r1151n(-v det =1.7v pull-up to v dd) 0.0 0.3 0.5 0.8 1.0 1.3 1.5 1.8 2.0 2.3 2.5 0 0.25 0.5 0.75 1 1.25 1.5 1.75 2 2.25 2.5 input voltage v in (v) v det output voltage vd out (v) topt=85 topt=25 topt= \ 40 r1151n(-v det =1.7v pull-up to 5v) 0.0 1.0 2.0 3.0 4.0 5.0 6.0 00.511.522.533.544.555.56 input voltage v in (v) v det output voltage v dout (v) topt=85 topt=25 topt=-40 12) nch driver output current vs. v ds (topt=25 c) r1151n(-v det =8.0v) 0 20 40 60 80 100 120 140 012345678910 v ds (v) output current i out (ma) v dd =2.0v v dd =2.5v v dd =3.0v v dd =3.5v v dd =4.0v v dd =4.5v v dd =5.0v v dd =5.5v v dd =6.0v v dd =6.5v v dd =7.0v v dd =7.5v v dd =1.5v v dd =1.0v r1151n(-v det =4.2v) 0 10 20 30 40 50 60 0123456 v ds (v) output current i out (ma) v dd =1.5v v dd =2.0v v dd =2.5v v dd =3.0v v dd =3.5v v dd =4.0v v dd =1.0v r1151n(-v det =2.9v) 0 5 10 15 20 25 30 00.511.522.53 v ds (v) output current i out (ma) v dd =1.0v v dd =1.5v v dd =2.0v v dd =2.5v r1151n(-v det =1.7v) 0 1 2 3 4 5 6 7 8 00.511.52 v ds (v) output current i out (ma) v dd =1.0v v dd =1.25v v dd =1.5v c c c c c c
rev. 1.11 - 21 - 13) nch driver output current vs. input voltage r1151n(-v det =8.0v) 0 5 10 15 20 25 30 35 40 0246810 input voltage v in (v) output current i out (ma) topt=85 topt=25 topt=-40 r1151n(-v det =4.2v) 0 5 10 15 20 25 30 35 40 012345 input voltage v in (v) output current i out (ma) topt=85 topt=25 topt=-40 r1151n(-vdet=2.9v) 0 5 10 15 20 25 30 35 40 01234 input voltage v in (v) output current i out (ma) topt=85 topt=25 topt=-40 r1151n(-vdet=1.7v) 0 5 10 15 20 25 30 35 40 00.511.522.5 input voltage v in (v) output current i out (ma) topt=85 topt=25 topt=-40 14)cd pin threshold voltage vs. temperature r1151n(-v det =8.0v) 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 -40 -15 10 35 60 85 temperature topt cd pin threshold voltage vtcd(v) h->l l->h r1151n(-v det =1.7v) 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 -40 -15 10 35 60 85 temperature topt cd pin threshold voltage vtcd(v) h-> l l-> h c c c c c c c c c c c c ( c ) ( c )
rev. 1.11 - 22 - 15)cd pin output current vs. input voltage r1151n(-v det =8.0v) 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 input voltage v in (v) cd pin output current i out (ma) topt=85 topt=25 topt=-40 r1151n(-v det =4.2v) 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 input voltage v in (v) cd pin output current i out (ma) topt=85 topt=25 topt=-40 r1151n(-v det =2.9v) 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 input voltage v in (v) cd pin output current i out (ma) topt=85 topt=25 topt=-40 r1151n(-v det =1.7v) 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 input voltage v in (v) cd pin output current i out (ma) topt=85 topt=25 topt=-40 16)cd pin output current vs. v ds (topt=25 c) r1151n(-v det =8.0v) 0 1 2 3 4 5 6 0123456789 v ds (v) cd pin output current i out (ma) v dd =2.0v v dd =2.5v v dd =3.0v v dd =3.5v v dd =4.0v v dd =4.5v v dd =5.0v v dd =5.5v v dd =6.0v v dd =6.5v v dd =7.0v v dd =7.5v v dd =1.5v r1151n(-v det =4.2v) 0 0.5 1 1.5 2 2.5 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 v ds (v) cd pin output current i out (ma) v dd =1.5v v dd =2.0v v dd =2.5v v dd =3.0v v dd =3.5v v dd =4.0v c c c c c c c c c c c c
rev. 1.11 - 23 - r1151n(-v det =2.9v) 0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 00.511.522.53 v ds (v) cd pin output current i out (ma) v dd =1.5v v dd =2.0v v dd =2.4v r1151n(-v det =1.7v) 0.00 0.02 0.04 0.06 0.08 0.10 0.12 0.14 0.16 0.18 0.20 0 0.25 0.5 0.75 1 1.25 1.5 1.75 v ds (v) cd pin output current i out (ma) v dd =1.2v v dd =1.5v 17) output delay time of release vs. temperature r1151n(-v det =8.0v) 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 3.00 -40 -15 10 35 60 85 temperature topt output delay time of release tplh(ms) external capacitance=220pf r1151n(-v det =1.7v) 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 3.00 -40 -15 10 35 60 85 temperature topt output delay time of release tplh(ms) external capacitance=220pf 18) output delay time of release vs. external capacitance for cd pin (topt=25 c) r1151n(-v det =8.0v) 0.1 1 10 100 10 100 1000 external capacitance for cd pin cd (pf) output delay time of release tplh(ms) r1151n(-v det =1.7v) 0.1 1 10 100 10 100 1000 external capacitance for cd pin cd (pf) output delay time of release tplh(ms) ( c ) ( c )
rev. 1.11 - 24 - 19)output delay time of detect vs. external capacitance for cd pin (topt=25 c) r1151n(-v det =8.0v) 1 10 10 100 1000 external capacitance for cd pin cd(pf) output delay time of detect tphl(us) r1151n (-v det =4.2v) 1 10 10 100 1000 external capacitance for cd pin cd(pf) output delay time of detect tphl(us) r1151n(-v det =2.9v) 1 10 10 100 1000 external capacitance for cd pin cd(pf) output delay time of detect tphl(us) r1151n(-v det =1.7v) 1 10 10 100 1000 external capacitance for cd pin cd(pf) output delay time of detect tphl(us) calculation of output delay time of release tplh(s)=2.31 c(f)/(300 10 -9 )(a) tplh vs. capacitance 0 1 2 3 4 5 6 7 8 9 10 11 0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 external capacitance for cd pin cd(pf) output delay time of release tplh(ms) tplh=2.31*c(f)/300*10^-9(a) calculated value measured value
rev. 1.11 - 25 - for stable operation phase compensation in these ics, phase compensation is externally made for securing stable operation even if the load current is varied. for this purpose, be sure to use a capacitor for the output pin with good frequency characteristics and esr (equivalent series resistance) of which is in the range described as follows: r1151nxxxc cd vout gnd esr ceramic capacitanc iiout s.a. vin ceramic capacitor ext vin vdet spectrum analyzer 4.7 f 10 f measuring circuit for white noise; r1112nxx1b the relations between i out (output current) and esr of output capacitor are shown below. the conditions when the white noise level is under 40 v (avg.) are marked as the hatched area in the graph. (1) v in =v out +1v (2) frequency band: 10hz to 1mhz (3) temperature: 25 c (4) c out: ceramic 10 f; esr=0.075 ? (10khz) vr=2.5v (2sa1441) 0.01 0.1 1 10 100 0 50 100 150 200 250 300 350 400 450 500 output current iout(ma) equivalent series resistance esr ( ? ) vr=9.0v (2sa1441) 0.01 0.1 1 10 100 0 50 100 150 200 250 300 350 400 450 500 output current iout (ma) equivalent series resistance esr ( ? )
rev. 1.11 - 26 - vr=2.5v (2sb703) 0.01 0.1 1 10 100 0 50 100 150 200 250 300 350 400 450 500 output current iout(ma) equivalent series resistance esr ( ? ) vr=9.0v (2sb703) 0.01 0.1 1 1 0 100 0 50 100 150 200 250 300 350 400 450 500 output current iout(ma) equivalent series resistance esr ( ? ) vr=2.5v (2sb940) 0.01 0.1 1 10 100 0 50 100 150 200 250 300 350 400 450 500 output current iout (ma) equivalent series resistance esr ( ? ) vr=9.0v (2sb940) 0.01 0.1 1 10 100 0 50 100 150 200 250 300 350 400 450 500 output current iout(ma) equivalent series resistance esr ( ? )

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