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low noise 150ma ldo regulator rp103 series preliminary no. ea-149-070309 1 outline the rp103 series are cmos-based voltage regulator ics with high output voltage accuracy, extremely low supply current, low on-resistance, and high ripple rejection. each of these ics consists of a voltage reference unit, an error amplifier, resistor-net for voltage setting, a current limit circuit, and a chip enable circuit. these ics perform with low dropout voltage and a chip enable function. the line transient response and load transient response of the rp103 series are excellent, thus these ics are very suitable for the power supply for hand-held communication equipment. the output voltage of these ics is fixed with high accuracy. since the packages for these ics are plp1010-4, sot23-5, sc82-ab, therefore high density mounting of the ics on boards is possible. features ? low supply current..............................................................typ. 36 a ? standby mode ......................................................................typ. 0.1 a ? low dropout voltage ............................................................typ. 0.210v (i out =150ma, 2.8v output type) ? high ripple rejection...........................................................typ. 75db (f = 1khz) ? low temperature-drift coefficient of output voltage typ. 30ppm/ c ? excellent line regulation.....................................................typ. 0.02%/v ? high output voltage accuracy.............................................. 1.0% ? small packages ..................................................................plp1010-4, sot-23-5, sc-82ab ? output voltage......................................................................1.2v, 1.3v, 1.5v, 1.8v, 1.85v, 1.9v, 2.0v, 2.5v, 2.6v, 2.7v, 2.8v, 2.85v, 2.9v, 3.0v, 3.1v, 3.3v ? built-in fold back protection circuit.....................................typ. 40ma (current at short mode) ? ceramic capacitors are recommended to be used with this ic c in = c out = 0.47 f or more applications ? power source for portable communication equipment. ? power source for electrical appliances such as cameras, vcrs and camcorders. ? power source for battery-powered equipment.
rp103 block diagrams rp103xxx1b rp103xxx1d selection guide the output voltage, version, 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; rp103xxx 1x-xx part number a b c d *when the mode is into standby with ce signal, auto-discharge transistor turns on, and it makes the turn-off speed faster than normal type. code contents a designation of package type: k: plp1010-4 n: sot-23-5 q: sc-82ab b setting output voltage (v out ): 1.2v, 1.3v, 1.5v, 1.8v, 1.85v, 1.9v, 2.0v, 2.5v, 2.6v, 2.7v, 2.8v, 2.85v, 2.9v, 3.0v, 3.3v exception:1.85v=rp103x181x5, 2.85v=rp103x281x5 c designation of active type: b: active high type* d: active high, with auto discharge* d designation of taping type: ex. tr (refer to taping specifications; tr type is the standard direction.) vref current limit gnd v dd v dd vref current limit gnd ce ce v out v out - + - +
rp103 pin configuration plp1010-4 sc-82ab sot-23-5 mark side 1 2 43 ce gnd vdd vout vdd ce vout gnd nc 1 5 3 2 4 mark side bottom view 1 2 3 4 vout gnd ce vdd top view 1 2 3 4 vout gnd ce vdd
rp103 pin descriptions ? rp103k pin no. symbol description 1 v out output pin 2 gnd ground pin 3 ce chip enable pin (?h? active) 4 v dd input pin tab is gnd level. (they are connected to the reverse side of this ic.) do not connect to other wires or land patterns. ? rp103n pin no. symbol description 1 v dd input pin 2 gnd ground pin 3 ce chip enable pin (?h? active) 4 nc no connection 5 v out output pin ? rp103q pin no. symbol description 1 ce chip enable pin (?h? active) 2 gnd ground pin 3 v out output pin 4 v dd input pin
rp103 absolute maximum ratings symbol item rating unit v in input voltage 6.0 v v ce input voltage (ce pin) 6.0 v v out output voltage ? 0.3~v in + 0.3 v i out output current 180 ma plp1010-4 *1 400 sot-23-5 (free air) *2 250 p d power dissipation sc-82ab *2 380 mw topt operating temperature range ? 40~85 c tstg storage temperature range ? 55~125 c *1: this value is under evaluation. *2: for power dissipation, please refer to package information (from p.8) to be described
rp103 electrical characteristics ? rp103xxx ? v in = set v out + 1v for v out options greater than 1.5v. v in =2.5v for v out 1.5v. i out =1ma, c in =c out =0.47f, unless otherwise noted. topt = 25 c symbol item conditions min. typ. max. unit v out output voltage (*1) v out 0.99 (-20mv) v out 1.01 (20mv) v i out output current 150 ma ? v out / ? i out load regulation 1ma < = i out < = 150ma 10 40 mv v dif dropout voltage please see the data sheet below i ss supply current i out = 0ma 36 48 a istandby supply current (standby) v ce = 0v 0.1 1.0 a ? v out / ? v in line regulation set v out +0.5v v in 5.0v 0.02 0.10 %/v rr ripple rejection f=1khz ,ripple 0.2vp-p v in =set v out +1v, i out =30ma (in case that v out 2.0v, v in =3v) 75 db v in input voltage (*2) 1.70 5.25 v ? v out / ? t output voltage temperature coefficient ? 40 c < = topt < = 85 c 30 ppm / c i lim short current limit v out = 0v 40 ma i pd ce pull-down current 0.3 a v ceh ce input voltage ?h? 1.5 v v cel ce input voltage ?l? 0.3 v en output noise bw = 10hz to 100khz i out =30ma 60 vrms (*1) vout < = 2.0v, 20mv accuracy (*2) max. input voltage is 5.5v during 500 hours dropout voltage dropout voltage (v) v out (v) condition typ. max. 1.2v < = v out < 1.5v 0.500 0.620 1.5v < = v out < 1.7v 0.380 0.470 1.7v < = v out < 2.0v 0.340 0.420 2.0v < = v out < 2.5v 0.280 0.360 2.5v < = v out < 2.8v 0.220 0.300 2.8v < = v out < = 3.3v i out =150ma 0.210 0.270
rp103 technical notes when using these ics, consider the following points: phase compensation in these ics, phase compensation is made for securing stable operation even if the load current is varied. for this purpose, use a capacitor c out with good frequency characteristics and esr (equivalent series resistance). (note: if additional ceramic capacitors are connected with parallel to the output pin with an output capacitor for phase compensation, the operation might be unstable. because of this, test these ics with as same external components as ones to be used on the pcb.) pcb layout make v dd and gnd lines sufficient. if their impedance is high, noise pickup or unstable operation may result. connect a capacitor with a capacitance value as much as 0.47 f or more between v dd and gnd pin, and as close as possible to the pins. set external components, especially the output capacitor, as close as possible to the ics, and make wiring as short as possible. (external components) output capacitor 0.47 f murata: grm155b30j474ke18b c1 c2 vdd out ce gnd in out rp103 series
package information confidential 0 100 200 300 400 0 25 50 75 100 125 150 ambient temperature ( c) power dissipation p d (mw) 500 600 250 420 on board free air 85 power dissipation (sot-23-5) this specification is at mounted on board. power dissipation (pd) 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 test 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-holes 0.5mm * 44pcs measurement result (topt=25 c, tjmax=125 c) standard test land pattern free air power dissipation 420mw 250mw thermal resistance ja = (125-25 c)/0.42w= 263 c/w 400 c/w power dissipation measurement board pattern ic mount area (unit: mm)
rp103 power dissipation (sc-82ab) this specification is at mounted on board. power dissipation (pd) 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 plactic (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 380mw 150mw thermal resistance ja = (125 ? 25 c)/0.38w = 263 c/w 667 c/w 0 50 100 25 75 85 125 150 ambient temperature ( c) 0 200 100 300 400 150 380 500 600 power dissipation p d (mw) on board free air 40 40 power dissipation measurement board pattern ic mount area (unit : mm) typical characteristics
rp103 1) output voltage vs. output current cin=0.47uf, cout=0.47uf 2) output voltage vs. input voltage cin=0.47uf, cout=0.47uf vset=1.2v 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 012345 input voltage [v] output voltage [v] io ut =1 ma iout=30ma iout=50ma topt=25c vset=2.5v 0.0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 012345 input voltage [v] output voltage [v] io ut =1 ma iout=30ma iout=50ma topt=25c vset=1.2v 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 0 100 200 300 400 500 output current [ma ] o utput voltage [v] vin=5.5v v in=5.0v vin=4.2v vin=3.6v vin=2.2v topt=25c vset=2.5v 0.0 0.5 1.0 1.5 2.0 2.5 3.0 0 100 200 300 400 500 output current [ma] output voltage [v] v in =5.5v v in =5.0v v in =4.2v v in =3.5v topt=25c vset=3.3v 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 0 100 200 300 400 500 output current [ma] o ut p ut v o lt ag e [ v] vin=5.5v v in=5.0v vin=4.3v topt=25c
rp103 3) supply current vs. input voltage cin=0.47uf , cout=0.47uf vset=1.2v 0 10 20 30 40 50 012345 input voltage [v] supply current [ua] topt=25 c vset=2.5v 0 10 20 30 40 50 012345 input voltage [v] supply current [ua] topt=25 c vset=3.3v 0 10 20 30 40 50 012345 input voltage [v] supply current [ua] topt=25 c vs et=3.3v 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 01 2345 input voltage [v ] output voltage [v] iout=1ma iout=30ma iout=50ma topt=25c
rp103 4) output voltage vs. temperature cin=0.47uf, cout=0.47uf 5) supply current vs. temperature cin=0.47uf, cout=0.47uf vs et=1 .2 v 30 32 34 36 38 40 -50-250255075100 topt [c] s u pp ly cu r r en t [u a ] vin=2.2v iout=0ma vs et=2 .5 v 30 32 34 36 38 40 -50 -25 0 25 50 75 100 topt [c] supply current [ua] v in=3.5v io ut =0ma vset=1.2v 1.15 1.16 1.17 1.18 1.19 1.20 1.21 1.22 1.23 1.24 1.25 -40 -15 10 35 60 85 temperature topt [c] output voltage [v] vin=2.2v iout=1ma vset=2.5v 2.45 2.46 2.47 2.48 2.49 2.50 2.51 2.52 2.53 2.54 2.55 -40 -15 10 35 60 85 temperature topt [c] output voltage [v] vin=3.5v iout=1ma vset=3.3v 3.25 3.26 3.27 3.28 3.29 3.30 3.31 3.32 3.33 3.34 3.35 -40 -15 10 35 60 85 temperature topt [c] output voltage [v] vin=4.3v iout=1ma
rp103 6) dropout voltage vs. output current cin=0.47uf, cout=0.47uf vset=1.2v 0 100 200 300 400 500 600 0306090120150 output current [ma] dropout voltage [mv] 25c -40c 85c vset=2.5v 0 50 100 150 200 250 300 0306090120150 output current [ma] dropout voltage [mv] 25c -40c 85c vset=3.3v 0 50 100 150 200 250 0 306090120150 output current [ma] dropout voltage [mv] 25c -40c 85c vset=3 .3 v 30 32 34 36 38 40 -50 -25 0 25 50 75 100 topt [c] su pp ly cu rren t [u a] v in=4.3v iout =0ma
rp103 7) dropout voltage vs. v set cin=0.47uf, cout=0.47uf 8) ripple rejection vs. input bias ( cin=none, cout=0.47uf) 9) ripple rejection vs. frequency cin=none, cout=0.47uf 0 100 200 300 400 500 600 700 1.0 1.5 2.0 2.5 3.0 3.5 vset [v] dropout voltage [mv] 10ma 30ma 50ma 150ma topt=25 c v set=2.8v 0 10 20 30 40 50 60 70 80 90 2.8 3.3 3.8 4.3 4.8 5.3 vin input bias [v] ripple rejection [db ] f=1khz f=10khz f=100khz input ripple=0.2vp-p topt=25c iout =1ma vs et=2.8v 0 10 20 30 40 50 60 70 80 90 2.8 3.3 3.8 4.3 4.8 5.3 v in input bias [v] ripple r ejec tion [db] f=1khz f=10khz f=100khz input ripple=0.2vp-p topt=25 c iout=30ma vset=2 .5 v 0 10 20 30 40 50 60 70 80 90 10 0 0.1 1 10 100 1000 frequency [khz] ripple rejection [db] iou t =1ma iout=30ma iout=150ma in p u t r i p p l e =0 . 2v p - p vin=3.5v vset=1.2v 0 20 40 60 80 100 120 0.1 1 10 100 1000 frequency [khz] ripple rejection [db ] io ut =1ma iout =30ma io ut =15 0ma input ripple=0.2vp-p vin=2.2v
rp103 10) input transient response cin=none, cout=0.47uf vset=3.3v 0 20 40 60 80 10 0 12 0 0.1 1 10 100 1000 frequency [khz] ripple rejection [db] io u t = 1 ma iout=30ma iout=150ma input ripple=0.2v p-p v in=4.3v vset=1 .2v 1. 1 90 1. 1 95 1. 2 00 1. 2 05 1. 2 10 1. 2 15 1. 2 20 0 20406080100 ti me [u s ] o ut p ut v o lt ag e [ v] -2 -1 0 1 2 3 4 inp ut v o lt ag e [ v] input voltage output voltage tr=tf=5us topt=25 c iout=30ma vset=2 .5 v 2.490 2.495 2.500 2.505 2.510 2.515 2.520 0 20 40 60 80 100 ti me [u s ] o ut p ut v o lt ag e [ v] -1 0 1 2 3 4 5 input voltage [v] tr=tf =5us topt=25c iout=30ma input v oltage output voltage vs et=3 .3 v 3. 2 85 3. 2 90 3. 2 95 3. 3 00 3. 3 05 3. 3 10 3. 3 15 3. 3 20 0 20 40 60 80 100 time [us ] o utput voltage [v] 0 1 2 3 4 5 6 input voltage [v] tr=tf=5us topt=25c io ut = 30 m a input voltage output voltage
rp103 11) load transient response cin=0.47uf, cout=0.47uf v set=1.2v 1.15 1.16 1.17 1.18 1.19 1.20 020406080100 time [us ] output voltage [v] 0 50 100 150 ouput current [ma] vin=2.2v tr=tf=0.5us topt=25c output voltage output current 50ma <==> 100ma vset=2.5v 2.45 2.46 2.47 2.48 2.49 2.50 0 20406080100 time [u s ] o ut p ut v o lt ag e [ v] 0 50 100 150 ouput current [ma] vin=3.5v tr=tf =0.5us topt=25c output v oltage output current 50ma <==> 100ma v set=3.3v 3.27 3.28 3.29 3.30 0 20 40 60 80 100 ti me [u s ] o utput voltage [v] 0 50 100 150 o uput current [ma ] vin=4.3v tr=tf =0.5us topt=25c output v olta g e output current 50ma <==> 100ma v set=1 .2 v 1.05 1.10 1.15 1.20 0 20406080100 ti me [u s ] output voltage [v] 0 150 300 o u pu t cu rr en t [m a] vin=2.2v tr=tf =0.5us topt=25c output v oltage out p ut current 1ma <==> 150ma vset=2 .5 v 2.35 2.40 2.45 2.50 0 20 40 60 80 100 ti me [u s ] o ut p ut v o lt ag e [ v] 0 150 300 o uput current [ma ] vin=3.5v tr=tf=0.5us topt=25c output v oltage out p ut current 1ma <==> 150ma vs et=3.3 v 3.15 3.20 3.25 3.30 0 20 40 60 80 100 time[us ] o utput voltage [v] 0 15 0 30 0 ouput current [ma ] vin=4.3v tr=tf=0.5us topt=25c output v oltage output current 1ma <==> 150ma
rp103 12) turn on speed with ce pin cin=0.47uf, cout=0.47uf v set=1 .2v -0.5 0 0.5 1 1.5 2 2.5 3 3.5 0 20406080100 time [us] output voltage [v] -6.5 -4.5 -2.5 -0.5 1.5 3.5 c e input voltage [v] ce input v oltage output voltage topt=25 iout=0ma v set=1 .2 v -0.5 0 0.5 1 1.5 2 2.5 3 3.5 020406080100 time [ us] o utput voltage [v] -6.5 -4.5 -2.5 -0.5 1.5 3.5 ce input voltage [v] ce input v oltage outp ut v o lta g e topt=25 iout=30ma vset=2.5v -0.5 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 0 20406080100 time [ us] output voltage [v] -6.5 -4.5 -2.5 -0.5 1.5 3.5 ce input voltage [v] ce input v oltage output v oltage topt =25 io ut = 1 50 m a v set=2 .5 v -0.5 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 020406080100 time [ us] output voltage [v] -6.5 -4.5 -2.5 -0.5 1.5 3.5 c e in pu t v olt a ge [v ] ce in p u t v o lt ag e out put v o lta ge topt =25 iout=0ma vset=1.2v -0.5 0 0.5 1 1.5 2 2.5 3 3.5 0 20406080100 time [us] output voltage [v] -6.5 -4.5 -2.5 -0.5 1.5 3.5 ce input voltage [v] ce in p u t v o lt ag e output voltage topt=25 io ut = 1 50 m a vset=2.5v -0.5 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 0 20406080100 time [us] output voltage [v] -6.5 -4.5 -2.5 -0.5 1.5 3.5 ce input voltage [v] ce input v oltage output v oltage topt=25 iout=30ma
rp103 13) turn off speed with ce pin (d version) cin=1.0uf, cout=1.0uf v set=1 .2 v -0.5 0.0 0.5 1.0 1.5 2.0 2.5 3.0 0 20 40 60 80 100 120 140 160 180 200 time [us ] output voltage [v] -6.5 -5.5 -4.5 -3.5 -2.5 -1.5 -0.5 0. 5 1. 5 2. 5 ce input voltage [v] ce input voltage output v oltage topt=25c iout=0ma vset=1.2 v -0.5 0.0 0.5 1.0 1.5 2.0 2.5 3.0 0 20 40 60 80 100 120 140 160 180 200 time [ us] output voltage [v] -6.5 -5.5 -4.5 -3.5 -2.5 -1.5 -0.5 0.5 1.5 2.5 ce input voltage [v] ce input v oltage output voltage topt=25c iout =30ma vset=3.3v -0.5 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 0 20406080100 time [us] output voltage [v] -6.5 -4.5 -2.5 -0.5 1.5 3.5 ce input voltage [v] ce in p u t v o lt ag e o u tpu t v olt age topt=25 iout=0ma vset=3.3v -0.5 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 0 20 40 60 80 100 time [us] output voltage [v] -6.5 -4.5 -2.5 -0.5 1.5 3.5 ce input voltage [v] ce input v oltage output voltage topt =25 iout=30ma vset=3 .3 v -0.5 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 0 20406080100 time [us] output voltage [v] -6.5 -4.5 -2.5 -0.5 1.5 3.5 ce input voltage [v] ce input v oltage o utput v olt age topt=25 io ut = 1 50 m a
rp103 v set=1 .2 v -0.5 0.0 0.5 1.0 1.5 2.0 2.5 3.0 0 20 40 60 80 100 120 140 160 180 200 time [us ] output voltage [v] -6.5 -5.5 -4.5 -3.5 -2.5 -1.5 -0.5 0.5 1.5 2.5 c e in pu t v olt age [v ] ce input v oltage output voltage topt =25c iout=150ma v set=2 .5 v -0.5 0.5 1.5 2.5 3.5 4.5 5.5 6.5 0 20 40 60 80 100 120 140 160 180 200 time [us ] output voltage [v] -10 -8 -6 -4 -2 0 2 4 c e in pu t v olt age [v ] ce input v oltage output v oltage topt=25c io u t = 0 ma v set=2 .5 v -0.5 0.5 1.5 2.5 3.5 4.5 5.5 6.5 0 20 40 60 80 100 120 140 160 180 200 ti me [u s ] output voltage [v] -10 -8 -6 -4 -2 0 2 4 ce input voltage [v] ce inp ut v oltage output voltage topt=25c iout=30ma vset=2.5v -0.5 0.5 1.5 2.5 3.5 4.5 5.5 6.5 0 20 40 60 80 100 120 140 160 180 200 ti me [u s ] output voltage [v] -10 -8 -6 -4 -2 0 2 4 ce input voltage [v] ce input voltage output v oltage topt=25 c iout=150ma
rp103 14) esr vs output current (frequency band: 10hz to 2mhz temperature: -40 c to 85 c) vset=3.3v -0.5 0.5 1.5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 0 20 40 60 80 100 120 140 160 180 200 time [us] o utput voltage [v ] -11 -9 -7 -5 -3 -1 1 3 5 ce input voltage [v] ce input voltage output voltage topt=25c io ut =0m a v set=3.3v -0.5 0.5 1.5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 0 20 40 60 80 100 120 140 160 180 200 time [us] output voltage [v] -11 -9 -7 -5 -3 -1 1 3 5 ce inp ut vo ltage [v ] ce input voltage output v olta ge topt=25c io ut =30 m a vset=3.3v -0.5 0.5 1.5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 0 20 40 60 80 100 120 140 160 180 200 time [us ] output voltage [v] -11 -9 -7 -5 -3 -1 1 3 5 ce input voltage [v] ce input voltage outp ut v o lta ge topt=25c iout =150 ma v set=1 .2v 0. 0 1 0.1 1 10 100 0 2 5 50 7 5 1 00 12 5 1 5 0 output current iout [ma] esr [ ? ] topt=-40 topt=85 vin=1.7v to 5.0v cin=cout=0.47uf vs et=3 .3 v 0. 0 1 0.1 1 10 100 0 255075100125150 output current iout [ma] esr [ ? ] topt=85 topt=-40 vin=2.9v to 5.0v cin=cout=0.47uf

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