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low dropout and low noise voltage regulator 1 outline the rx5rz series are cmos-based voltage regulator ics with high output voltage accuracy, low supply current, low dropout voltage and high ripple rejection. each of these voltage regulator ics consists of a voltage reference unit, an error amplifier, output voltage setting resistors, a current limit circuit and a chip enable circuit. (provided two types of chip enable circuit ; ??active and ??active, that can be selected when order.)for a/b version the output voltage of these ics is fixed with high accuracy. in addition to low supply current from cmos process, the rx5rz series may lengthen battery life through low dropout voltage and chip enable function thanks to the built-in low on resistance transistor. also when compared with conventional regulators that employ cmos process, these ics have superior ripple rejection, input transient response characteristic and load transient response characteristic thus making these product suitable for power sup- ply for hand-held communication equipment. since the package for these ics are the sot-23-5 package and sot89, high density mounting of the ics on boards is possible. ultra-low supply current ........................................... typ. 20? ultra-low supply current (standby) ......................... typ. 0.1? (for a/b version) high accuracy output voltage .................................. ?.0% high ripple rejection ................................................. typ. 55db (f=1khz) low dropout voltage .................................................. typ. 0.2v (i out =60ma) low temperature-drift coefficient of output voltage ........ typ. ?00ppm/?c excellent line regulation ........................................... typ. 0.05%/v ?output voltage ............................................................. stepwise setting with a step of 0.1v in the range of 2.0v to 6.0v is possible (refer to selection guide). built-in short current limit circuit ........................... typ. 50ma ?small package .............................................................. sot-23-5 (mini-mold), sot89 features applications power source for battery-powered equipment. power source for cellular phones, cameras, vcrs, camcorders, hand-held audio instruments and hand-held com- munication equipment. power source for domestic appliances. rx5rz series no. ea-039-0204
selection guide 2 rx5rz block diagrams 2 5 1 v out gnd v dd ce vref 3 current limit 2 5 1 v out gnd v dd ce + vref 3 current limit + rn5rzxxa rn5rzxxb 2 1 v out gnd v dd vref 3 current limit + rh5rzxxc rx5rz xxxx xx part number abcde } the output voltage, the active type of the chip enable circuit, the packing type, and the taping type for the ics can be selected at the user's request. these selections can be made by designating the part number as shown below: code contents package type: a n : sot23-5 h : sot89 b setting output voltage (v out ) : stepwise setting with a step of 0.1v in the range of 2.0v to 6.0v is possible. designation of active type of the chip enable circuit : c a : l active type b : h active type c : no ce pin designation of packing type : d a : taping c : antistatic bag (for samples only) e designation of taping type : ex. tr, tl (refer to taping specifications ; tr type is the standard direction.) } for example, the product with output voltage of 5.0v, specified polarity of chip enable is h active and taping type tr is designated by part number rn5rz50ba-tr.
3 rx5rz pin configuration pin description ?sot-23-5 12 3 54 (mark side) pin no. symbol description 1 gnd ground pin 2v dd input pin 3v out output pin 4 nc no connection 5 ce or ce chip enable pin absolute maximum ratings absolute maximum ratings absolute maximum ratings are threshold limit values that must not be exceeded even for an instant under any conditions. moreover, such values for any two items must not be reached simultaneously. operation above these absolute maximum ratings may cause degradation or permanent damage to the device. these are stress ratings only and do not necessarily imply functional operation below these limits. symbol item ratings unit v in input voltage 9 v v ce input voltage (ce or ce pin) 0.3 to v in +0.3 v v out output voltage 0.3 to v in +0.3 v i out output current 200 ma p d power dissipation 250 (sot23-5) mw 500 (sot89) topt operating temperature 40 to +85 ? c tstg storage temperature 55 to +125 ? c sot89 12 3 (mark side)
4 rx5rz electrical characteristics rn5rzxxa series symbol item conditions min. typ. max. unit v out output voltage v in =v out +1v, i out =30ma 0.98 1.02 v i out output current v in =v out +1v 100 ma when v out =v out 0.1v ? v out load regulation v in =v out +1v 20 40 mv ? i out 1ma i out 80ma v dif dropout voltage i out =60ma 0.2 0.3 v i ss supply current v in =v out +1v 20 40 a istandby supply current (standby) v in =v ce =v out +1v 0.1 1.0 a ? v out line regulation i out =30ma 0.05 0.20 %/v ? v in v out +0.5v v in 8.0v rr ripple rejection f=1khz, ripple 0.5vrms 55 db v in =v out +1v v in input voltage 8v ? v out output voltage i out =30ma 100 ppm/ ? c ? topt temperature coefficient 40 ? c topt 85 ? c i lim short current limit v out =0v 50 ma r pu ce pull-up resistance 2.5 5.0 10.0 m ? v ceh ce input voltage h 1.5 v v cel ce input voltage l 0.00 0.25 v topt=25 ? c
5 rx5rz rn5rzxxb series symbol item conditions min. typ. max. unit v out output voltage v in =v out +1v, i out =30ma 0.98 1.02 v i out output current v in =v out +1v 100 ma when v out =v out 0.1v ? v out load regulation v in =v out +1v 20 40 mv ? i out 1ma i out 80ma v dif dropout voltage i out =60ma 0.2 0.3 v i ss supply current v in =v out +1v 20 40 a istandby supply current (standby) v in =v out +1v, v ce =gnd 0.1 1.0 a ? v out line regulation i out =30ma 0.05 0.20 %/v ? v in v out +0.5v v in 8.0v rr ripple rejection f=1khz, ripple 0.5vrms 55 db v in =v out +1v v in input voltage 8v ? v out output voltage i out =30ma 100 ppm/ ? c ? topt temperature coefficient 40 ? c topt 85 ? c i lim short current limit v out =0v 50 ma r pu ce pull-down resistance 2.5 5.0 10.0 m ? v ceh ce input voltage h 1.5 v v cel ce input voltage l 0.00 0.25 v topt=25 ? c rh5rzxxc series symbol item conditions min. typ. max. unit v out output voltage v in =v out +1v, i out =30ma 0.98 1.02 v i out output current v in =v out +1v 100 ma ? v out load regulation v in =v out +1v 20 40 mv ? i out 1ma i out 80ma v dif dropout voltage i out =60ma 0.2 0.3 v i ss supply current v in =v out +1v 20 40 a ? v out line regulation i out =30ma 0.05 0.20 %/v ? v in v out +0.5v v in 8.0v rr ripple rejection f=1khz, ripple 0.5vrms 55 db v in =v out +1v v in input voltage 8v ? v out output voltage i out =30ma 100 ppm/ ? c ? topt temperature coefficient 40 ? c topt 85 ? c i lim short current limit v out =0v 50 ma topt=25 ? c
6 rx5rz operation test circuits 2 5 1 v out gnd v dd ce vref 3 current limit r1 r2 2 5 1 v out gnd v dd ce + vref 3 current limit r1 r2 error amp. error amp. + rn5rzxxa rn5rzxxb 2 1 v out gnd v dd vref 3 current limit r1 r2 + rh5rzxxc in these ics, the output voltage v out is detected by feed-back registers r1, r2, and the detected output voltage is compared with a reference voltage by an error amplifier, so that a constant voltage is output. a current limit circuit working for short protection and a chip enable circuit for standby function are included. 23 1 5 v dd v out gnd rn5rzxxb series c1 : 1 f c2 : 10 f c1 v in c2 i out ce 23 1 5 v dd v out rn5rzxxb series c1 : 1 f c2 : 10 f c1 v in c2 a gnd ce fig.1 standard test circuit fig.2 supply current test circuit
7 rx5rz 23 1 5 v dd v out rn5rzxxb series c1 : 10 f v in c1 i out p .g. gnd ce fig.3 line transient response test circuit 23 1 5 v dd v out rn5rzxxb series c1 : 1 f c2 : 10 f c1 v in c2 l1 l2 gnd ce fig.4 load transient response test circuit 23 1 5 v dd v out rn5rzxxb series c1 : 1 f c2 : 10 f c1 v in c2 i out gnd ce fig.5 ripple rejection test circuit
8 rx5rz typical characteristics 1) output voltage vs. output current rx5rz30x 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 output current i out (ma) output voltage v out (v) 0 100 200 300 400 500 3.5v 4.0v 5.0v v in =3.3v rx5rz40x 5.0 4.5 4.0 3.5 3.0 2.5 1.5 1.0 2.0 0.5 0.0 output current i out (ma) output voltage v out (v) 0 100 200 300 400 500 4.5v 5.0v 6.0v v in =4.3v rx5rz50x 6.0 5.0 4.0 3.0 2.0 1.0 0.0 output current i out (ma) output voltage v out (v) 0 100 200 300 400 500 6.0v 5.5v 7.0v v in =5.3v rx5rz30x input voltage v in (v) output voltage v out (v) 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0.0 2.0 4.0 8.0 6.0 i out =0ma i out =30ma i out =50ma rx5rz40x input voltage v in (v) output voltage v out (v) 5.0 4.0 3.0 2.0 1.0 0.0 0.0 2.0 4.0 8.0 6.0 i out =0ma i out =30ma i out =50ma 2) output voltage vs. input voltage
9 rx5rz 3) dropout voltage vs. output current rx5rz50x input voltage v in (v) output voltage v out (v) 6.0 5.0 4.0 3.0 2.0 1.0 0.0 0.0 2.0 4.0 6.0 8.0 i out =0ma i out =30ma i out =50ma rx5rz30x 0.30 0.25 0.20 0.15 0.10 0.05 0.00 output current i out (ma) dropout voltage v dif (v) 0 20406080100 topt= 40 ? c topt=25 ? c topt=85 ? c rx5rz40x 0.30 0.25 0.20 0.15 0.10 0.05 0.00 output current i out (ma) dropout voltage v dif (v) 0 20406080100 topt= 40 ? c topt=25 ? c topt=85 ? c rx5rz50x 0.30 0.25 0.20 0.15 0.10 0.05 0.00 output current i out (ma) dropout voltage v dif (v) 0 20406080100 topt= 40 ? c topt=25 ? c topt=85 ? c 0.35
10 rx5rz 4) output voltage vs. temperature 5) supply current vs. input voltage rx5rz30x 3.10 3.05 3.00 2.95 2.90 temperature topt( ? c) output voltage v out (v) 50 0 50 100 rx5rz40x 4.10 4.05 4.00 3.95 3.90 temperature topt( ? c) output voltage v out (v) 50 0 50 100 rx5rz50x 5.10 5.05 5.00 4.95 4.90 temperature topt( ? c) output voltage v out (v) 50 0 50 100 rx5rz30x 30 25 20 15 10 5 0 input voltage v in (v) supply current i ss ( a) 0.0 2.0 4.0 8.0 6.0 rx5rz40x 30 25 20 15 10 5 0 input voltage v in (v) supply current i ss ( a) 0.0 2.0 4.0 8.0 6.0
11 rx5rz 6) supply current vs. temperature rx5rz50x 30 25 20 15 10 5 0 input voltage v in (v) supply current i ss ( a) 0.0 2.0 4.0 8.0 6.0 rx5rz30x 30 25 20 15 10 5 0 temperature topt( ? c) supply current i ss ( a) 50 0 50 100 rx5rz40x 30 25 20 15 10 5 0 temperature topt( ? c) supply current i ss ( a) 50 0 50 100 rx5rz50x 30 25 20 15 10 5 0 temperature topt( ? c) supply current i ss ( a) 50 0 50 100
12 rx5rz 8) ripple rejection vs. frequency rx5rz30x 80 70 60 50 40 30 20 0 10 frequency f(kh z ) ripple rejection rr(db) 0.1 1 10 100 c out =tantal 2.2 f i out =1ma i out =30ma i out =50ma 7) dropout voltage vs. set output voltage rx5rzxxx 0.35 0.30 0.25 0.20 0.15 0.10 0.00 0.05 set output voltage vreg(v) dropout voltage v dif (v) 234 6 5 topt=25 ? c i out =10ma i out =30ma i out =50ma i out =100ma rx5rz30x 80 70 60 50 40 30 20 0 10 frequency f(kh z ) ripple rejection rr(db) 0.1 1 10 100 c out =tantal 4.7 f i out =1ma i out =30ma i out =50ma rx5rz30x 80 70 60 50 40 30 20 0 10 frequency f(kh z ) ripple rejection rr(db) 0.1 1 10 100 c out =tantal 10 f i out =1ma i out =30ma i out =50ma rx5rz40x 80 70 60 50 40 30 20 0 10 frequency f(kh z ) ripple rejection rr(db) 0.1 1 10 100 c out =tantal 2.2 f i out =1ma i out =30ma i out =50ma
13 rx5rz rx5rz40x 80 70 60 50 40 30 20 0 10 frequency f(kh z ) ripple rejection rr(db) 0.1 1 10 100 c out =tantal 4.7 f i out =1ma i out =30ma i out =50ma rx5rz40x 80 70 60 50 40 30 20 0 10 frequency f(kh z ) ripple rejection rr(db) 0.1 1 10 100 c out =tantal 10 f i out =1ma i out =30ma i out =50ma rx5rz50x 80 70 60 50 40 30 20 0 10 frequency f(kh z ) ripple rejection rr(db) 0.1 1 10 100 c out =tantal 2.2 f i out =1ma i out =30ma i out =50ma rx5rz50x 80 70 60 50 40 30 20 0 10 frequency f(kh z ) ripple rejection rr(db) 0.1 1 10 100 c out =tantal 4.7 f i out =1ma i out =30ma i out =50ma rx5rz50x 80 70 60 50 40 30 20 0 10 frequency f(kh z ) ripple rejection rr(db) 0.1 1 10 100 c out =tantal 10 f i out =1ma i out =30ma i out =50ma
14 rx5rz 10) line transient response 3.4 3.3 3.2 3.1 3.0 2.9 2.8 6 5 4 3 2 1 0 time t( s ) output voltage v out (v) input voltage v in (v) 10 0 20 405060708090100 30 t r =t f =5 s c out =ceramic 2.2 f+esr 1 ? input voltage output voltage 9) ripple rejection vs. input voltage (dc bias) rx5rz30x 70 60 50 40 30 20 0 10 input voltage v in (v) ripple rejection rr(db) 3.1 3.2 3.3 3.5 3.4 i out =1ma c out =tantal 10 f f=400hz f=1khz f=10khz rx5rz30x 70 60 50 40 30 20 0 10 input voltage v in (v) ripple rejection rr(db) 3.1 3.2 3.3 3.5 3.4 f=400hz f=1khz f=10khz i out =10ma c out =tantal 10 f rx5rz30x 70 60 50 40 30 20 0 10 input voltage v in (v) ripple rejection rr(db) 3.1 3.2 3.3 3.5 3.4 i out =50ma c out =tantal 10 f f=400hz f=1khz f=10khz
15 rx5rz 11) load transient response 3.4 3.3 3.2 3.1 3.0 2.9 2.8 6 5 4 3 2 1 0 time t( s ) output voltage v out (v) input voltage v in (v) 10 0 20 405060708090100 30 t r =t f =5 s c out =tantal 3.3 f input voltage output voltage 3.4 3.3 3.2 3.1 3.0 2.9 2.8 6 5 4 3 2 1 0 time t( s ) output voltage v out (v) input voltage v in (v) 10 0 20 405060708090100 30 t r =t f =5 s c out =tantal 10 f input voltage output voltage 3.4 3.3 3.2 3.1 3.0 2.9 2.8 150 100 50 0 50 100 150 time t( s ) output voltage v out (v) output current i out (ma) 10 0 20 405060708090100 30 c out =ceramic 2.2 f+1 ? output current output voltage
16 rx5rz 3.4 3.3 3.2 3.1 3.0 2.9 2.8 150 100 50 0 50 100 150 time t( s ) output voltage v out (v) output current i out (ma) 10 0 20 405060708090100 30 c out =tantal 2.2 f output current output voltage 3.4 3.3 3.2 3.1 3.0 2.9 2.8 150 100 50 0 50 100 150 time t( s ) output voltage v out (v) output current i out (ma) 10 0 20 405060708090100 30 c out =tantal 3.3 f output current output voltage 3.4 3.3 3.2 3.1 3.0 2.9 2.8 150 100 50 0 50 100 150 time t( s ) output voltage v out (v) output current i out (ma) 10 0 20 405060708090100 30 c out =tantal 10 f output current output voltage
17 rx5rz countermeasure for noise for stable operation 23 1 5 v in ceramic capacitor spectrum analyzer v out i out rn5rzxxb series esr v in s.a. ceramic capacitor 0.01 f gnd ce the relationship between output current (i out ) and equivalent series resistance (esr) in the output capacitor is described in the graphs below. the conditions when the noise level is under 40v (avg.) are indicated by the hatched area in the graph. [measuring conditions] frequency band : 0hz to 1mhz temperature : 25 ? c measuring circuit for white noise ; rn5rz30b ceramic capacitor 1f 100.0 10.0 1.0 0.1 0.0 output current i out (ma) esr(w) 0.0 20.0 40.0 60.0 80.0 100.0 : noise level is under 40v ceramic capacitor 2.2f 100.0 10.0 1.0 0.1 0.0 output current i out (ma) esr(w) 0.0 20.0 40.0 60.0 80.0 100.0 : noise level is under 40v
18 rx5rz ceramic capacitor 4.7f 100.0 10.0 1.0 0.1 0.0 output current i out (ma) esr(w) 0.0 20.0 40.0 60.0 80.0 100.0 : noise level is under 40v ceramic capacitor 10f 100.0 10.0 1.0 0.1 0.0 output current i out (ma) esr(w) 0.0 20.0 40.0 60.0 80.0 100.0 : noise level is under 40v application hints when using these ics, be sure to take care regarding the following points : in these ics, phase compensation is made for securing stable operation even when the load current is var- ied. for this purpose, be sure to use a capacitor c out with good frequency characteristics and esr in the range described above. make v dd and gnd lines sufficient. if their impedance is high, the noise picked up or unstable operation may result. connect the capacitor with a capacitance of about 1f between v dd and gnd with wiring as short as possi- ble. set external components as close as possible to the ics and make wiring as short as possible.
pac k age information pe-sot-23-5-071228 ? sot-23-5 (sc-74a) unit: mm package dimensions 2.9 0.2 0.4 0.1 1.9 0.2 (0.95) (0.95) 54 123 +0.2 ? 0.1 1.6 +0.2 ? 0.1 1.1 +0.1 ? 0.05 0.15 2.8?0.3 0 to 0.1 0.8 0.1 0.2 min. taping specification 2.0max. 0.3?0.1 4.0?0.1 2.0?0.05 4.0?0.1 3.3 3.2 8.0?0.3 1.75?0.1 3.5?0.05 1.5 +0.1 0 ? 1.1 0.1 tr user direction of feed taping reel dimensions reuse reel (eiaj-rrm-08bc) (1reel=3000pcs) 2 0.5 11.4 1.0 9.0 0.3 13 0.2 ? 60 ? +1 0 180 ? 0 ? 1.5 21 0.8
pac k age information pe-sot-23-5-071228 power dissipation (sot-23-5) this specification is at mounted on board. power dissipation (p d ) depends on conditions of mounting on board. this specification is based on the measurement at the condition below: (power dissipation (sot-23-5) is substitution of sot-23-6.) measurement conditions standard land pattern environment mounting on board (wind velocity=0m/s) board material glass cloth epoxy plastic (double sided) board dimensions 40mm 40mm 1.6mm copper ratio top side : approx. 50% , back side : approx. 50% through-hole 0.5mm 44pcs measurement result (topt=25 c, tjmax=125 c) standard land pattern free air power dissipation 420mw 250mw thermal resistance ja = (125 ? 25 c)/0.42w = 238 c/w 400 c/w 0 50 100 25 75 85 125 150 ambient temperature ( c) 0 200 100 300 400 250 420 500 600 power dissipation p d (mw) on board free air 40 40 power dissipation measurement board pattern ic mount area unit : mm recommended land pattern 0.7 max. 0.95 0.95 1.9 2.4 1.0 (unit: mm)
package information pe-sot-89-071210 ? sot-89 (sc-62) unit: mm package dimensions 4.5 ? + ? taping specification (t1: standard type) t1 12 ? + ? taping reel dimensions (1reel=1000pcs) 15.4 ? ? ? + ?
package information pe-sot-89-071210 power dissipation (sot-89) this specification is at mounted on board. power dissipation (p d ) depends on conditions of mounting on board. this specification is based on the measurement at the condition below: measurement conditions standard land pattern environment mounting on board (wind velocity=0m/s) board material glass cloth epoxy plastic (double sided) board dimensions 50mm = ? = 50 50 power dissipation measurement board pattern ic mount area (unit : mm) recommended land pattern (sot-89) 3.0 45

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