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2002.apr.1 800ma ldo regulator r1170x series rev. 1.11 - 1 - outline the r1170 series are positive voltage regulator ics by cmos process. the r1170 series have features of high ripple rejection, low dropout voltage, high output voltage accuracy, low consumption current. each of these ics consists of a voltage reference unit, an error amplifier, resistor net for setting output voltage, a current limit circuit at short mode, a chip enable circuit, and thermal-shunt circuit. output voltage of r1170 is fixed in the ic. low consumption current by the merit of cmos process and built-in transistors with low on-resistance make low dropout voltage and chip enable function prolong the battery life. these regulators are remarkable improvement on the current regulators in terms of ripple rejection, input transient response, and load transient response. maximum output current is large for its compact size. thus, the r1170 series are suitable for various power sources for portable appliances. since the packages for these ics are the sot-89-5 package, hson6, or sc-84(under development), high density mounting of the ics on boards is possible. features ultra-low supply current ? ? ? ? ? ? ? ? typ. 80a low standby current ? ? ? ? ? ? ? ? ? ? ? typ. 0.1a output current ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? min. 800ma(v in =v out +1.0v) output voltage ? ? ? ? ? ? ? ? ? ? ? ? stepwise setting with a step of 0.1v in the range of 1.5v to 4.0v high output voltage accuracy ? ? ? ? 2.0% low dropout voltage ? ? ? ? ? ? ? ? ? ? ? ? typ. 0.12v(v out =3.0v, i out =300ma) line regulation ? ? ? ? ? ? ? ? ? ? ? ? typ. 0.05%/v small package ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? sot-89-5, hson6, sc-84(under development) built-in current limit circuit built-in thermal shunt circuit low temperature-drift coefficient of output voltage ? ? ? ? ? ? ? ? ? typ. 100ppm/ c applications local power source for notebook pc. local power source for portable appliances, cameras, and videos. local power source for equipment of battery-use. local power source for home appliances.
rev. 1.11 - 2 - block diagrams r1170h /u (under development) series r1170d series vref 1 4 5 2 current limit - + v dd ce v out gnd v dd v dd vref 3 6 1 4 current limit - + ce v out gnd 5 2 v out selection guide the output voltage, the chip-enable polarity, the taping type can be selected at the user ? s request. the selection can be made with the part number as follows; r1170x xxxx-xx part number a b c d code contents a package type; h: sot89-5, d: hson-6p, u:sc-84(under development) b designation of output voltage(v out ) stepwise setting with 0.1v increment in the range from 1.5v to 5.0v (from 4.1v to 5.0v: under development) c designation of option; a: built-in chip enable circuit, active at ?l? b: built-in chip enable circuit, active at ?h? d designation of taping type; t1 or t2 (sot89-5), tr(hson-6/sc-84(under development)) (refer to taping specifications) pin configuration sot-89-5 5 4 1 2 3 mark side
rev. 1.11 -3- hson-6p 6 5 4 1 2 3 sc-84 (under development) 5 4 1 2 3 pin description sot89-5/sc-84(under development) pin no. symbol description 1 ce or ce chip enable pin voltage regulator output pin 2 gnd ground pin 3 nc no connection 4v dd input pin 5v out voltage regulator output pin hson-6p pin no. symbol description 1v out voltage regulator output pin 2v out voltage regulator output pin 3 ce or ce chip enable pin voltage regulator output pin 4 gnd ground pin 5v dd input pin 6v dd input pin
rev. 1.11 - 4 - absolute maximum ratings item symbol rating unit input voltage v in 7.0 v input voltage(ce or ce input pin)* note v ce -0.3 ~ v in +0.3 v output voltage v out -0.3 ~ v in +0.3 v output current i out 1.2 a power dissipation p d internally limited operating temperature t opt -40 ~ 85 c storage temperature t stg -55 ~ 125 c electrical characteristics r1170xxxxa (topt=25 c) item symbol conditions min. typ. max. unit input voltage v in 6.0 v supply current1 i ss1 v in -v out =1.0v v ce =gnd 80 160 a standby current istb v in =v ce =6.0v 0.1 1.0 a output voltage v out v in -v out =1.0v i out =100ma x0.98 x1.02 v output current i out1 v in -v out =1.0v 800 ma load regulation ? v out / ? i out v in -v out =1.0v 1ma i out 300ma 30 100 mv dropout voltage v dif i out =300ma refer to dropout voltage table line regulation ? v out / ? v in i out =100ma v out +0.5v v in 6.0v 0.05 0.30 %/v ripple rejection rr f=1khz,ripple 0.5vp-p 1.5v v in 4.0v: v in -v out =1.0v 4.1v v in 5.0v: v in -v out =0.75v 50 db output voltage temperature coefficient ? v out / ? t i out =10ma -40 c topt 85 c 100 ppm / c short current limit i lim v out =0v 40 ma pull-up resistance for ce pin r pu 1.25 2.50 5.00 m ? ce input voltage ?h? v ceh 1.50 v in v ce input voltage ?l? v cel 0.00 0.25 v thermal shutdown detector threshold temperature t tsd junction temperature 150 c thermal shutdown released temperature t tsr junction temperature 120 c
rev. 1.11 -5- r1170xxxxb (topt=25 c) item symbol conditions min. typ. max. unit input voltage v in 6.0 v supply current1 i ss1 v in -v out =1.0v v ce= v in 80 160 a standby current istb v in =6.0v, v ce =gnd 0.1 1.0 a reference voltage for adjustable voltage regulator v out v in -v out =1.0v i out =100ma x0.98 x1.02 v output current i out1 v in -v out =1.0v 800 ma load regulation ? v out / ? i out v in -v out =1.0v 1ma i out 300ma 30 100 mv dropout voltage v dif i out =300ma refer to dropout voltage table line regulation ? v out / ? v in i out =100ma v out +0.5v v in 6.0v 0.05 0.30 %/v ripple rejection rr f=1khz,ripple 0.5vp-p 1.5v v in 4.0v: v in -v out =1.0v 4.1v v in 5.0v: v in -v out =0.75v 50 db output voltage temperature coefficient ? v out / ? t -40 c topt 85 c 100 ppm / c short current limit i lim v out =0v 40 ma pull-down resistance for ce pin r pd 1.25 2.50 5.00 m ? ce input voltage ?h? v ceh 1.5 v in v ce input voltage ?l? v cel 0.00 0.25 v thermal shutdown detector threshold temperature t tsd junction temperature 150 c thermal shutdown released temperature t tsr junction temperature 120 c dropout voltage by output voltage (topt=25 c) dropout voltage (v) output voltage v out (v) typ. max. v out =1.5 0.35 0.45 v out =1.6 0.30 0.35 v out =1.7 0.25 0.30 1.8 v out 2.0 0.20 0.25 2.1 v out 2.4 0.15 0.20 2.5 v out 5.0 0.12 0.18
rev. 1.11 - 6 - test circuits v out gnd ce v dd r1170xxx1b series in out 10 f v out gnd ce v dd in out standard test circuit test circuit for ripple rejection, input transient response v out gnd ce v dd in out v out gnd ce v dd in out supply current test circuit test circuit for load transient response i ss iout p.g iout i1 i2 10 f 10 f 10 f 10 f 10 f 10 f r1170xxx1b series r1170xxx1b series r1170xxx1b series
rev. 1.11 -7- technical notes on external components and typical application phase compensation in these ics, phase compensation is made with the output capacitor for securing stable operation even if the load current is varied. for this purpose, use as much as 10 f capacitor as c l. if you use a tantalum type capacitor and esr value of the capacitor is large, output might be unstable. evaluate your circuit with considering frequency characteristics. further, refer to the typical characteristics no.12. mounting on pcb make v dd and gnd lines sufficient. if their impedance is high, current flows, the noise pick-up or unstable operation may result. further use as much as 10 f capacitor between v dd pin and gnd pin as close as possible. set an output capcitor between v out pin and gnd pin for phase compensation as close as possible . (refer to the example of typical application) example of the typical application of r1170xxxxb in out v dd ce gnd v out ci cl r1170xxx1b ci=10 f(ceramic), cl=10 f(ceramic)
rev. 1.11 - 8 - typical characteristics 1)output voltage vs. output current(topt=25 c) r1170x151b 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 0 250 500 750 1000 1250 1500 output current i out (ma) output voltage v out (v) r1170x301b 0 0.5 1 1.5 2 2.5 3 3.5 0 250 500 750 1000 1250 1500 output current i out (ma) output voltage v out (v) r1170x501b 0 1 2 3 4 5 6 0 250 500 750 1000 1250 1500 output current i out (ma) output voltage v out (v) 2)output voltage vs. input voltage(topt=25 c) r1170x151b 1.1 1.2 1.3 1.4 1.5 1.6 1.7 123456 input voltage v in (v) output voltage v out (v) i out = 1ma i out = 10ma i out = 100ma i out = 300ma r1170x201b 1.4 1.5 1.6 1.7 1.8 1.9 2 2.1 2.2 123456 input voltage v in (v) output voltage v out (v) i out = 300ma i out = 100ma i out = 10ma i out = 1ma v in =3.5v v in =2.5v v in =2v v in =5v v in =4v v in =3.5v v in =6v v in =5.5v
rev. 1.11 -9- r1170x301b 2.5 2.6 2.7 2.8 2.9 3 3.1 3.2 23456 input voltage v in (v) output voltage v out (v) i out = 1ma i out = 100ma i out = 300ma i out = 10ma r1170x401b 3.4 3.5 3.6 3.7 3.8 3.9 4 4.1 4.2 3.5 4 4.5 5 5.5 6 input voltage v in (v) output voltage v out (v) i out = 1ma i out = 10ma i out =100ma i out =300ma r1170x501b 3.8 4.0 4.2 4.4 4.6 4.8 5.0 5.2 4.0 4.5 5.0 5.5 6.0 input voltage v in (v) output voltage v out (v) 3)dropout voltage vs. output current r1170x151b 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0 100 200 300 400 500 600 700 800 output current i out (ma) dropout voltage v dif (v) r1170x201b 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0 100 200 300 400 500 600 700 800 output current i out (ma) dropout voltage v dif (v) i out =1ma i out =10ma i out =100ma i out =300ma 85 c 25 c -40 c 85 c 25 c -40 c
rev. 1.11 - 10 - r1170x301b 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0 100 200 300 400 500 600 700 800 output current i out (ma) dropout voltage v dif (v) r1170x401b 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0 100 200 300 400 500 600 700 800 output current i out (ma) dropout voltage v dif (v) r1170x501b 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0 100 200 300 400 500 600 700 800 output current i out (ma) dropout voltage v dif (v) 4)output voltage vs. temperature r1170x151b 1.40 1.43 1.45 1.48 1.50 1.53 1.55 1.58 1.60 -50 -25 0 25 50 75 100 temperature topt output voltage v out (v) i out =10ma v in =2.5v r1170x201b 1.90 1.93 1.95 1.98 2.00 2.03 2.05 2.08 2.10 -50 -25 0 25 50 75 100 temperature topt output voltage v out (v) i out =10ma v in =3v ( c) ( c) -40 c 25 c 85 c 85 c 25 c -40 c -40 c 25 c 85 c
rev. 1.11 -11- r1170x301b 2.80 2.85 2.90 2.95 3.00 3.05 3.10 3.15 3.20 -50 -25 0 25 50 75 100 temperature topt output voltage v out (v) i out =10ma v in =4v r1170x401b 3.80 3.85 3.90 3.95 4.00 4.05 4.10 4.15 4.20 -50 -25 0 25 50 75 100 temperature topt output voltage v out (v) i out =10ma v in =5v r1170x501b 4.80 4.85 4.90 4.95 5.00 5.05 5.10 5.15 5.20 -50 -25 0 25 50 75 100 temperature topt output voltage v out (v) v in =6v , i out =10ma 5)supply current vs. input voltage(topt=25 c) r1170x151b 0 20 40 60 80 100 120 0123456 input voltage v in (v) supply current iss(ua) r1170x201b 0 20 40 60 80 100 120 0123456 input voltage v in (v) supply current iss(ua) ( c) ( c) ( c)
rev. 1.11 - 12 - r1170x301b 0 20 40 60 80 100 120 0123456 input voltage v in (v) supply current iss ua) r1170x401b 0 20 40 60 80 100 120 0123456 input voltage v in (v) supply current iss(ua) r1170x501b 0 20 40 60 80 100 120 0123456 input voltage v in v) supply current i ss (ua) 6)supply current vs. temperature r1170x151b 20 40 60 80 100 120 140 160 -50 -25 0 25 50 75 100 temperature topt supply current iss (ua) v in =2.5v r1170x201b 20 40 60 80 100 120 140 160 -50 -25 0 25 50 75 100 temperature topt supply current iss (ua) v in =3v ( c) ( c)
rev. 1.11 -13- r1170x301b 20 40 60 80 100 120 140 160 -50 -25 0 25 50 75 100 temperature topt supply current iss (ua) v in =4v r1170x401b 20 40 60 80 100 120 140 160 -50 -25 0 25 50 75 100 temperature topt supply current iss (ua) v in =5v r1170x501b 20 40 60 80 100 120 140 160 -50 -25 0 25 50 75 100 temperature topt( ) supply current i ss (ua) v in =6v 7)dropout voltage vs. set output voltage(topt=25 c) r1170x501b 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 12345 set output voltage v set (v) dropout voltage v dif (v) i out =100ma i out =400ma i out =600ma i out =800ma ( c) ( c)
rev. 1.11 - 14 - 8)ripple rejection vs. frequency r1170x151b 0 10 20 30 40 50 60 70 80 0.01 0.1 1 10 100 ripple frequency f (khz) ripple rejection rr (db) v in =2.5v+0.5vp-p i out =100ma r1170x201b 0 10 20 30 40 50 60 70 80 0.01 0.1 1 10 100 ripple frequency f(khz) ripple rejection rr (db) v in =3v+0.5vp-p i out =100ma r1170x301b 0 10 20 30 40 50 60 70 80 0.01 0.1 1 10 100 ripple frequency f (khz) ripple rejection rr (db) v in =4v+0.5vp-p i out =100ma r1170x401b 0 10 20 30 40 50 60 70 80 0.01 0.1 1 10 100 ripple frequency f (khz) ripple rejection rr (db) v in =5v+0.5vp-p i out =100ma r1170x501b 0 10 20 30 40 50 60 70 80 0.01 0.1 1 10 100 ripple frequency f(khz) ripple rejection rr(db) v in =5.75+0.5vp-p, i out =100ma
rev. 1.11 -15- 9)ripple rejection vs. input voltage r1170x301b 0 10 20 30 40 50 60 3 3.2 3.4 3.6 input voltage v in (v) ripple rejection rr(db) i out = 1ma c out = 10uf f = 400hz f =1khz f = 10khz r1170x301b 0 10 20 30 40 50 60 33.23.43.6 input voltage v in (v) ripple rejection rr(db) i out = 10ma c out = 10uf f = 400hz f =1khz f = 10khz r1170x301b 0 10 20 30 40 50 60 3 3.2 3.4 3.6 input voltage v in (v) ripple rejection rr(db) i out = 100ma c out = 10uf f = 400hz f =1khz f = 10khz 10)input transient response (topt=25 c) r1170x151b 1.4 1.45 1.5 1.55 1.6 1.65 1.7 1.75 1.8 0 20 40 60 80 100 120 140 160 180 200 time t(us output voltage v out (v) 0 0.5 1 1.5 2 2.5 3 3.5 4 input voltage v in (v) c out =ceramic 10uf i out =100ma tr=tf=10us input voltage output voltage
rev. 1.11 - 16 - r1170x301b 2.8 2.9 3 3.1 3.2 3.3 3.4 0 20 40 60 80 100 120 140 160 180 200 time t(us) output voltage v out (v) 0 1 2 3 4 5 6 input voltage v in (v) c out =ceramic 10uf tr=tf=10us i out =100ma input voltage output voltage r1170x301b 2.8 2.9 3 3.1 3.2 3.3 3.4 0 20 40 60 80 100 120 140 160 180 200 time t(us) output voltage v out (v) 0 1 2 3 4 5 6 input voltage v in (v) c out = ceramic 4.7uf tr=tf=10us i out =100ma input voltage output voltage r1170x501b 4.90 4.95 5.00 5.05 5.10 5.15 5.20 0 20 40 60 80 100 120 140 160 180 200 time t(u ) output voltage v out (v) 3.5 4.0 4.5 5.0 5.5 6.0 6.5 input voltage v in (v) input voltage output voltage tr=tf=10us iout=100ma, cout=ceramic 10uf
rev. 1.11 -17- r1170x501b 4.90 4.95 5.00 5.05 5.10 5.15 5.20 0 20 40 60 80 100 120 140 160 180 200 time t(us) output voltage v out (v) 3.5 4.0 4.5 5.0 5.5 6.0 6.5 input voltage v in (v) 11)load transient response(topt=25 c) r1170x151b 1.4 1.5 1.6 1.7 1.8 1.9 2 0 20 40 60 80 100 120 140 160 180 200 time t(us) output voltage v out (v) 0 20 40 60 80 100 120 output current i out (ma) tr=tf=3us v in =2.5v c in = ceramic 10uf c out =ceramic 10uf output current output voltage r1170x301b 2.9 3 3.1 3.2 3.3 3.4 3.5 0 20 40 60 80 100 120 140 160 180 200 time t(us) output voltage v out (v) 0 20 40 60 80 100 120 output current i out (ma) c in = ceramic 10uf c out =ceramic 10uf tr=tf=3us v in =4v output voltage output current input voltage output voltage tr=tf=10us iout=100ma, cout=ceramic 4.7uf
rev. 1.11 - 18 - r1170x301b 2.9 3 3.1 3.2 3.3 3.4 3.5 0 20 40 60 80 100 120 140 160 180 200 time t(us) output voltage v out (v) 0 20 40 60 80 100 120 output current i out (ma) c in = ceramic 10uf c out =ceramic 4.7uf tr=tf=3us v in =4v output current output voltage r1170x501b 4.90 4.95 5.00 5.05 5.10 5.15 5.20 0 20 40 60 80 100 120 140 160 180 200 time t(us) output voltage v out (v) -150 -100 -50 0 50 100 150 output current i out (ma) tr=tf=3us, c in =ceramic 10uf, c out =ceramic 10uf output current output voltage r1170x501b 4.90 4.95 5.00 5.05 5.10 5.15 5.20 0 20 40 60 80 100 120 140 160 180 200 time t(us) output voltage v out (v) -150 -100 -50 0 50 100 150 output current i out (ma) output current output voltage tr=tf=3us, cin = ceramic 10uf cout= ceramic 4.7uf
rev. 1.11 -19- 12)stable area(topt=25 c,v in =set output voltage+1v,c in =ceramic 10 f) r1170xxxxb ce vin vout gnd esr ceramic capacitor iiout s.a. spectrum analyzer vin ceramic capacitor as an output capacitor for this ic, ceramic capacitor is recommendable. however, other low esr type capacitor can be used with this ic. for your reference, noise level is tested with the circuit as shown above, and if the noise level is 40 v or less than 40 v, the esr values are plotted as stable area. upper limit is described in the next four graphs, or esr vs. output current. (hatched area is the stable area.) r1170x151b 0.1 1 10 100 0 200 400 600 800 output current i out (ma) esr ohm) c out = ceramic 10uf r1170x151b 0.1 1 10 100 0 200 400 600 800 output current i out (ma) esr ohm) c out =ceramic 4.7uf r1170x301b 0.1 1 10 100 0 200 400 600 800 output current i out (ma) esr ohm) c out =ceramic 10uf r1170x301b 0.1 1 10 100 0 200 400 600 800 output current i out (ma) esr(ohm) c out =ceramic 4.7uf
rev. 1.11 - 20 - r1170x501b 0.01 0.1 1 10 100 0 100 200 300 400 500 600 700 800 output current i out (ma) esr(ohm) c out =ceramic 10uf r1170x501b 0.01 0.1 1 10 100 0 100 200 300 400 500 600 700 800 output current i out (ma) esr(ohm) c out =ceramic 4.7uf

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