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rp102 series low noise 300ma ldo regulator e20060919 1 outline the rp102 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, a resistor-net for voltage setting, a current limit circuit and a chip enable circuit. these ics perform with low dropout voltage and "chip enable" function. the line transient response and load transient response of the rp102 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 sot23-5, plp1820-6(under development), and wl-csp-4-p2(under development), therefore high density mounting of the ics on boards is possible. features ? low supply current..............................................................typ. 50 a ? standby mode ......................................................................typ. 0.1 a ? low dropout voltage ............................................................typ. 0.12v (i out =300ma 3.3v output type) ..........................................................................................typ. 0.14v (i out =300ma 2.5v output type) ? high ripple rejection...........................................................typ. 80db (f = 1khz 2.5v output type) ? low temperature-drift coefficient of output voltage typ. 20ppm/ c ? excellent line regulation.....................................................typ. 0.02%/v ? high output voltage accuracy.............................................. 1.0% ? small packages ..................................................................wl-csp-4-p2 (under development), sot-23-5, plp1820-6(under development) ? output voltage......................................................................1.2v, 1.3v, 1.5v, 1.8v, 2.5v, 2.6v, 2.8v, 2.85v, 2.9v, 3.0v, 3.3v ? built-in fold back protection circuit.....................................typ. 50ma (current at short mode) ? ceramic capacitors are recommended to be used with this ic c in = c out = 1 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.
rp102 2 block diagrams rp102xxx1b rp102xxx1d 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; rp102xxx 1xx-xx part number a b c d e code contents a designation of package type: k: plp1820-6(under development) n: sot-23-5 z: wl-csp4-p2(under development) b setting output voltage (v out ): 1.2v, 1.3v, 1.5v, 1.8v, 2.5v, 2.6v, 2.8v, 2.85v, 2.9v,3.0v, 3.3v c designation of active type: b: active high type d: active high, with auto discharge d designation of 50mv step of output voltage type: ex. if vout=2.85 this digit is described as 5. (rp102x281x5-tr) e 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 - - + +
rp102 3 pin configuration plp1820-6 sot-23-5 v dd gnd ce v out nc 1 5 3 2 4 mark side wl-csp4-p2 gnd 4 5 6 3 2 1 mark side v dd v dd ce v out v out gnd 1 2 3 6 5 4
rp102 4 pin descriptions ? rp102k pin no. symbol description 1 v out output pin 2 v out output pin 3 gnd ground pin 4 ce chip enable pin 5 v dd input pin 6 v dd input pin ? rp102n ? rp102z pin no. symbol description 1 v dd input pin 2 ce chip enable pin 3 gnd ground pin 4 v out output pin pin no. symbol description 1 v dd input pin 2 gnd ground pin 3 ce chip enable pin 4 nc no connection 5 v out output pin
rp102 5 absolute maximum ratings symbol item rating unit v dd input voltage 6.0 v v ce input voltage (ce pin) 6.0 v v out output voltage ? 0.3 ~ v dd + 0.3 v i out output current 400 ma plp1820-6 (under development) 880 * sot-23-5 (free air) 250 p d power dissipation wlcsp4-p2 (under development) 530 * mw topt operating temperature range ? 40~85 c tstg storage temperature range ? 55~125 c measurement conditions; 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-holes: 0.54mm * 30pcs(plp1820-6)
rp102 6 electrical characteristics ? rp102xxx ? v in = set v out + 1v for v out options grater than 1.5v. v in =2.5v for v out 1.5v. i out =1ma, cin=cout=1f, 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 300 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 50 70 a istandby supply current (standby) v ce = 0v 0.1 2.0 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) 80 db v dd input voltage 1.7 5.0 v ? v out / ? t output voltage temperature coefficient ? 40 c < = topt < = 85 c 20 ppm / c i lim short current limit v out = 0v 50 ma i pd ce pull-down current 0.05 0.30 0.60 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 30 vrms rlow nch on resistance for auto discharge (d version) v in =4.0v v ce =0v 30 ? (*1) vout < = 2.0v 20mv accuracy (*2) max. input voltage is 5.5v during 500hours ? dropout voltage dropout voltage v out (v) condition typ. max. condition typ. max. 1.2v < = v out <1.5v 145 500 290 500 1.5v < = v out < 1.7v 110 160 220 320 1.7v < = v out < 2.0v 100 140 200 280 2.0v < = v out < 2.5v 85 120 170 240 2.5v < = v out < 2.8v 70 100 140 200 2.8v < = v out < = 3.3v i out =150ma 60 95 i out =300ma 120 190
rp102 7 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 1.0 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. typical characteristics 1) output voltage vs. output current (cin=1.0uf, cout=1.0uf) vset=1.2v 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 0 100 200 300 400 500 600 700 output current [ma] output voltage [v] v in =5.5 v in =5.0 v in =4.2 v in =3.6 v v in =2.2 v topt=25c vset=2.5v 0.0 0.5 1.0 1.5 2.0 2.5 3.0 0 100 200 300 400 500 600 700 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 0 100 200 300 400 500 600 700 output current [ma] output voltage [v] v in =5.5v v in =5.0v v in =4.3v topt=25c
rp102 8 2) output voltage vs. input voltage (cin=1.0uf , cout=1.0uf) 3) supply current vs. input voltage (cin=1.0uf, cout=1.0uf) 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=3.3v 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 012345 input voltage [v] output voltage [v] io ut =1 ma iout=30ma iout=50ma topt=25c vset=1.2v 0 10 20 30 40 50 60 70 80 012345 input voltage [v] supply current [ua] topt=25 c vset=2.5v 0 10 20 30 40 50 60 70 80 012345 input voltage [v] supply current [ua] topt=25 c
rp102 9 4) output voltage vs. temperature (cin=1.0uf , cout=1.0uf) vset=3.3v 0 10 20 30 40 50 60 70 80 01 234 5 input voltage [v] supply current [ua] topt=25 c 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 -50 -25 0 25 50 75 100 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 -50-25 0 25 50 75100 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 -50-25 0 25 50 75100 topt [c] output voltage [v] vin=4.3v io ut =1ma
rp102 10 5) supply current vs. temperature (cin=1.0uf , cout=1.0uf) 6) dropout voltage vs. output current (cin=1.0uf , cout=1.0uf) vset=1.2v 40 45 50 55 60 -50 -25 0 25 50 75 100 topt [c] supply current [ua] vin=2.2v io ut =0ma vset=2.5v 40 45 50 55 60 -50 -25 0 25 50 75 100 topt [c] supply current [ua] vin=3.5v iout=0ma vset=3.3v 40 45 50 55 60 -50-250 255075100 topt [c] supply current [ua] vin=4.3v iout=0ma vset=1.2v 0 50 100 150 200 250 300 0 50 100 150 200 250 300 output current [ma] dropout voltage [mv] 25c -40c 85c vset=2.5v 0 50 100 150 200 0 50 100 150 200 250 300 output current [ma] dropout voltage [mv] 25c -40c 85c
rp102 11 7) dropout voltage vs. vset (cin=1.0uf , cout=1.0uf) 8) ripple rejection vs. input bias (cin=none , cout=1.0uf) vset=3.3v 0 50 100 150 200 0 50 100 150 200 250 300 output current [ma] dropout voltage [mv] 25c -40c 85c 0 50 100 150 200 250 300 1.0 1.5 2.0 2.5 3.0 3.5 vset [v] dropout voltage [mv] 10ma 30ma 50ma 150ma 300ma topt=25 c vset=1.2v 0 10 20 30 40 50 60 70 80 90 1.2 1.7 2.2 2.7 3.2 3.7 4.2 4.7 vin input bias [v] ripple rejection [db] f=1khz f=10khz f=100khz input ripple=0.2vp-p topt=25 c io ut =1 ma vset=1.2v 0 10 20 30 40 50 60 70 80 90 1.2 1.7 2.2 2.7 3.2 3.7 4.2 4.7 vin input bias [v] ripple rejection [db] f=1khz f=10khz f=100khz input ripple=0.2vp-p topt=25 c iout=30ma
rp102 12 9) ripple rejection vs. frequency (cin=none, cout=1.0uf) vset=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=25 c io ut =1ma vset=2.8v 0 10 20 30 40 50 60 70 80 90 2.83.33.84.34.85.3 vin input bias [v] ripple rejection [db] f=1khz f=10khz f =100khz input ripple=0.2vp-p topt=25 c iout=30ma vset=2.5v 0 20 40 60 80 100 120 0.1 1 10 100 1000 frepuency [khz] ripple rejection [db] io ut =1 ma iout=30ma iout=150ma input ripple=0.2vp-p vin=3.5v vset=3.3v 0 20 40 60 80 100 120 0.1 1 10 100 1000 frepuency [khz] ripple rejection [db] io ut =1ma iout =30ma io ut =15 0ma input ripple=0.2vp-p vin=4.3v vset=1.2v 0 20 40 60 80 100 120 0.1 1 10 100 1000 frepuency [khz] ripple rejection [db] iout=1ma iout=30ma iout=150ma input ripple=0.2vp-p vin=2.2v
rp102 13 10) input transient response (cin=none, cout=1.0uf) vset=1.2v 1.190 1.195 1.200 1.205 1.210 1.215 1.220 020406080100 time [us] output voltage [v] -2 -1 0 1 2 3 4 input voltage [v] input v olt age output voltage tr=tf=5us topt=25 c iout=30ma vset=2.5v 2.490 2.495 2.500 2.505 2.510 2.515 2.520 0 20406080100 time [us] output voltage [v] -1 0 1 2 3 4 5 input voltage [v] tr =tf =5us topt=25 c iout=30ma input voltage output voltage vset=1.2v 0 20 40 60 80 100 120 0.1 1 10 100 1000 frequency [khz] ripple rejection [db] topt=-40 topt=25 topt=85 input ripple=0. 2v p- p vin=2.2v iout =30ma vset=3.3v 0 20 40 60 80 100 120 0.1 1 10 100 1000 frequency [khz] ripple rejection [db] topt=- 40 topt=25 topt=85 input ripple=0.2vp-p vin=4.3v iout=30ma vset=2.5v 0 20 40 60 80 100 120 0.1 1 10 100 1000 frequency [khz] ripple rejection [db] topt=-40 topt=25 topt=85 input ripple=0.2vp-p vin=3.5v iout=30ma
rp102 14 11) load transient response (cin=1.0uf, cout=1.0uf) vset=3.3v 3.290 3.295 3.300 3.305 3.310 3.315 3.320 020406080100 time [us] output voltage [v] 0 1 2 3 4 5 6 input voltage [v] tr =tf =5us topt=25 c iout=30ma input v oltage output voltage vset=1.2v 1.15 1.16 1.17 1.18 1.19 1.20 0 20406080100 time [us] output voltage [v] 0 50 100 150 ouput current [ma] vin=2.2v tr =tf =0.5us topt=25 c output voltage out p ut current 50ma <==> 100ma vset=2.5v 2.45 2.46 2.47 2.48 2.49 2.50 020406080100 time [us] output voltage [v] 0 50 100 150 ouput current [ma] vin=3.5v tr =tf =0.5us topt=25 c output voltage out p ut current 50ma <==> 100ma vset=3.3v 3.25 3.26 3.27 3.28 3.29 3.30 0 20406080100 time [us] output voltage [v] 0 50 100 150 ouput current [ma] vin=4.3v tr=tf =0.5us topt=25 c out p ut volta g e out p ut current 50ma <==> 100ma
rp102 15 12) turn on speed with ce pin (cin=1.0uf, cout=1.0uf) vset=1.2v 1.05 1.10 1.15 1.20 0 20406080100 time [us ] output voltage [v] 0 150 300 ouput current [ma] vin=2.2v tr=tf =0.5us topt=25 c output voltage out p ut current 1ma <==> 150ma vset=2.5v 2.35 2.40 2.45 2.50 0 20406080100 time [us] output voltage [v] 0 150 300 ouput current [ma] vin=3.5v tr=tf =0.5us topt=25 c output voltage output current 1ma <==> 150ma vset=3.3v 3.15 3.20 3.25 3.30 0 20406080100 time[us ] output voltage [v] 0 150 300 ouput current [ma] vin=4.3v tr=tf =0.5us topt=25 c output voltage out p ut current 1ma <==> 150ma vset=1.2v -0.5 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 020406080100 time [us] output voltage [v] -5 -4 -3 -2 -1 0 1 2 3 ce input voltage [v] output voltage topt=25c iout=0ma ce input voltage vset=1.2v -0.5 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 020406080100 time [us] output voltage [v] -5 -4 -3 -2 -1 0 1 2 3 ce input voltage [v] ce input voltage output voltage topt=25c iout =30ma
rp102 16 vset=1.2v -0.5 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 020406080100 time [us] output voltage [v] -5 -4 -3 -2 -1 0 1 2 3 ce input voltage [v] ce input voltage output voltage topt=25c iout=150ma vset=2.5v -1.0 0.0 1.0 2.0 3.0 4.0 5.0 6.0 020406080100 time [us] output voltage [v] -8 -6 -4 -2 0 2 4 6 ce input voltage [v] ce input voltage output voltage topt=25c io ut =0 ma vset=2.5v -1.0 0.0 1.0 2.0 3.0 4.0 5.0 6.0 0 20406080100 time [us] output voltage [v] -8 -6 -4 -2 0 2 4 6 ce input voltage [v] ce input voltage output voltage topt=25c iout=30ma vset=2.5v -1.0 0.0 1.0 2.0 3.0 4.0 5.0 6.0 0 20406080100 time [us] output voltage [v] -8 -6 -4 -2 0 2 4 6 ce input voltage [v] ce input voltage output voltage topt=25c io ut =15 0ma
rp102 17 13) turn off speed with ce pin (d version) (cin=1.0uf, cout=1.0uf) vset=3.3v -1.5 0.0 1.5 3.0 4.5 6.0 7.5 9.0 0 20406080100 time [us] output voltage [v] -8 -6 -4 -2 0 2 4 6 ce input voltage [v] ce input voltage output voltage topt=25c iout=0ma vset=3.3v -1.5 0.0 1.5 3.0 4.5 6.0 7.5 9.0 0 20406080100 time [us] output voltage [v] -8 -6 -4 -2 0 2 4 6 ce input voltage [v] ce input voltage output voltage topt=25c iout=30ma vset=3.3v -1.5 0.0 1.5 3.0 4.5 6.0 7.5 9.0 0 20406080100 time [us] output voltage [v] -8 -6 -4 -2 0 2 4 6 ce input voltage [v] ce input voltage output voltage topt=25c iout=150ma vset=1.2v -0.5 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 0 100 200 300 400 500 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 3.5 ce input voltage [v] ce input voltage output voltage topt=25c iout=0ma vset=1.2v -0.5 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 0 50 100 150 200 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 3.5 ce input voltage [v] ce input voltage output voltage topt=25c iout=30ma
rp102 18 vset=1.2v -0.5 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 020406080100 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 3.5 ce input voltage [v] ce input voltage output voltage topt=25c iout=300ma vset=2.5v -0.5 0.5 1.5 2.5 3.5 4.5 5.5 6.5 0 100 200 300 400 500 time [us] output voltage [v] -6.5 -4.5 -2.5 -0.5 1.5 3.5 5.5 ce input voltage [v] ce input voltage output voltage topt=25c io ut =0 ma vset=2.5v -0.5 0.5 1.5 2.5 3.5 4.5 5.5 6.5 0 100 200 300 400 500 time [us] output voltage [v] -6.5 -4.5 -2.5 -0.5 1.5 3.5 5.5 ce input voltage [v] ce input voltage 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 0 100 200 300 400 500 time [us] output voltage [v] -6.5 -4.5 -2.5 -0.5 1.5 3.5 5.5 ce input voltage [v] ce input voltage output voltage topt=25c iout=300ma
rp102 19 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 0 100 200 300 400 500 time [us] output voltage [v] -7.5 -5.5 -3.5 -1.5 0.5 2.5 4.5 6.5 ce input voltage [v] ce input voltage output voltage topt=25c io ut =0 ma vset=3.3v -0.5 0.5 1.5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 0 100 200 300 400 500 time [us] output voltage [v] -7.5 -5.5 -3.5 -1.5 0.5 2.5 4.5 6.5 ce input voltage [v] ce input voltage output voltage topt=25c iout =30ma vset=3.3v -0.5 0.5 1.5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 0 100 200 300 400 500 time [us] output voltage [v] -7.5 -5.5 -3.5 -1.5 0.5 2.5 4.5 6.5 ce input voltage [v] ce input voltage output voltage topt=25c iout=300ma vs et=1 .2 v 0.01 0.10 1.00 10.00 100.00 0 50 100 150 200 250 300 output curr ent iout [ma] esr [ ? ] vin=2.2v to 5.5v cin=cout=1f topt=- 40 topt=85 vset=2 .5 v 0.01 0.10 1.00 10.00 10 0 .0 0 0 50 100 150 200 250 300 output current iout [ma] esr [ ? ] vin=3.5v to 5.5v cin=cout=1f topt=-40 topt=85
rp102 20 v set=3.3 v 0.01 0.10 1.00 10.00 10 0 .0 0 0 50 100 150 200 250 300 output current iout [ma ] esr [ ? ] vin=4.3v to 5.5v cin=cout=1f topt=-40 topt=85

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