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rp202x series low power/fast mode alternative 200ma ldo regulator no.ea-279-160324 1 outline the rp202x series consist of cmos-based voltage regul ator ics with high output voltage accuracy, low dropout voltage and low supply current. these ics perform with t he chip enable function and realize a standby mode with ultra low supply current. to prevent the destruction by over current, the current limit circuit is included. the rp202 series have 3-mode. one is standby mode with ce pin. t he other two are the fast response mode (fast mode) and the low power mode, and switch over automatically accordi ng to the load current of the ldo. supply current of ic itself at light load is automatically reduced. the outpu t voltage is maintained between fast mode and eco mode. the rp202x consists of a voltage reference unit, an error am plifier, a resister net for voltage setting, and a current limit circuit. since the packages for these ics are sot-23-5, sc- 88a, and dfn(plp)1010-4, high density mounting of the ics on boards is possible. features input voltage range ............................................. 1.4v to 5.25v output voltage ran ge .......................................... 0.8v to 4. 0v (0.1v steps) ( for other voltages, please refer to mark informations.) supply current (i out =0ma) ................................... typ. 2.5 ? a supply current (i out =10ma) ................................. typ. 50 ? a supply current (standby mode) ........................... typ. 0.1 ? a dropout voltage .................................................... typ. 0.20v (i out ? 200ma, v out ? 2.8v) ripple rejectio n .................................................... typ. 70db (f ? 1khz, v out ? 2.8v, i out ? 30ma) line regulati on ..................................................... typ. 0.02%/v (i out =10ma) packages .............................................................. dfn(plp)1010- 4, sc-88a, sot-23-5 built-in foldback protecti on circuit ....................... typ. 60ma (current at short mode) built-in constant slope circuit (soft-start function) ceramic capacitors are recommended to be used with this ic ..... 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.
rp202 no.ea-279-160324 2 block diagrams rp202xxxxb rp202xxxxd v dd gnd v out ce vref current limit v dd gnd v out ce vref current limit selection guide the output voltage, auto discharge function, and package, fo r the ics can be selected at the user?s request. product name package quantity per reel pb free halogen free rp202kxx1 ? -tr dfn(plp)1010-4 10,000pcs yes yes rp202qxx2 ? -tr-fe sc-88a 3,000pcs yes yes rp202nxx1 ? -tr-fe sot-23-5 3,000pcs yes yes xx : the output voltage can be designated in the rang e from 0.8v(08) to 4.0v(40) in 0.1v steps. ? : the auto discharge function at off state are options as follows. (b) without auto discharge function at off state (d) with auto discharge function at off state auto-discharge function quickly lowers the ou tput voltage to 0v, when the chip enable si gnal is switched from the active mode t o the standby mode, by releasing the electrical charge accumulated in the external capacitor. ?
rp202x no.ea-279-160324 3 pin configurations dfn(plp)1010-4 sc-88a sot-23-5 top view 2 1 3 4 bottom view 1 2 4 3 ? 5 4 1 3 2 (mark side) 1 2 3 4 5 (mark side) pin descriptions dfn(plp)1010-4 pin no symbol pin 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.) the tab is better to be connected to the gnd, but leaving it open is also acceptable. sc-88a pin no symbol pin description 1 ce chip enable pin ("h" active) 2 nc no connection 3 gnd ground pin 4 v out output pin 5 v dd input pin sot-23-5 pin no symbol pin 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
rp202 no.ea-279-160324 4 absolute maximum ratings symbol item rating unit v in input voltage 6.0 v v ce input voltage (ce pin) ? 0.3 to 6.0 v v out output voltage ? 0.3 to v in + 0.3 v i out output current 220 ma p d power dissipation (dfn(plp)1010-4) (standard test land pattern) ? 400 mw power dissipation (sc-88a) (standard test land pattern) ? 380 power dissipation (sot-23-5) (standard test land pattern) ? 420 ta operating temperature range ? 40 to 85 ? c tstg storage temperature range ? 55 to 125 ? c ? ) for power dissipation, please refer to package information. absolute maximum ratings electronic and mechanical stress momentarily exceeded absolute maximum ratings may cause the permanent damages and may degrade the life time and safety for both device and syst em using the device in the field. the functional operation at or over these absolute maximum ratings is not assured. recommended operating conditions (electrical characteristics) all of electronic equipment should be designed that the mounted semiconductor devices operate within the recommended operating conditions. the semiconduct or devices cannot operate normally over the recommended operating conditions, even if when they are used over such conditions by momentary electronic noise or surge. and the semiconductor devices may receive serious damage when they continue to operate over the recommended operating conditions.
rp202x no.ea-279-160324 5 electrical characteristics v in ? set v out ? 1v, i out ? 1ma, c in ? c out ? 0.47 ? f, unless otherwise noted. the specification in is checked and guaranteed by design engineering at ? 40 ? c t a 85 ? c. (ta 25 ? c) symbol item conditions min. typ. max. unit v out output voltage i out =5ma (fast mode) ta = 2 5 ? c v out > 2.0v ? 0.99 ? 1.01 v v out 2.0v - 20mv 20mv i out =5ma (fast mode) -40 ? c ta 85 ? c v out > 2.0v ? 0.965 ? 1.025 v out 2.0v ? 70mv 50mv i out output current 200 ma ? v out / ? i out load regulation 1ma i out 10ma v out > 2.0v ? 1.0 1.0 % v out 2.0v ? 20 20 mv 10ma i out 200ma ? 20 10 30 mv v dif dropout voltage refer to the "dropout voltage" i ss1 supply current (i out =0ma)* 1 i out =0ma 2.5 5.0 ? a i ss2 supply current (i out =10ma) i out =10ma 50 ? a istandby standby current v ce =gnd 0.1 1.0 ? a i outh fast mode switch-over current i out = light load to heavy load 8.0 ma i outl low power mode switch-over current i out = heavy load to light load 1.0 2.0 ma ? v out / ? v in line regulation v out +0.5v v in 5v 1.4v v in i out =1m a (low power mode) ? 0.50 %/v i out =10m a (fast mode) ? 0.02 ? 0.10 rr ripple rejection f=1khz ripple 0.2vp-p v in =v out +1.0v i out =30ma v out 1.8v 75 db 1.8< v out 2.8v 70 2.8< v out 3.3v 65 3.3 < v out 60 v in input voltage 1.4 5.25 v ? v out / ? ta output voltage temperature coefficient ? 40 ? c ta 85 ? c ? 100 ppm / ? c i sc short current limit v out =0v 60 ma i cepd ce pull-down constant current 0.3 0.6 ? a v ceh ce input voltage ?h? 1.0 v v cel ce input voltage ?l? 0.4 v r low low output nch tr. on resistance (of d version) v in = 4.0v v ce = 0v 60 ? all of units are tested and specified under load conditions such that tj t a ? 25 ? c except for ripple rejection, output voltage temperature coefficient. ? 1) the value of supply current is excluding t he pull-down constant current of ce pin.
rp202 no.ea-279-160324 6 dropout voltage ta 25 ? c output voltage v out (v) dropout voltage v dif (v) condition typ. max. 0.8 v out <0.9 i out =200ma 0.60 0.79 0.9 v out <1.0 0.55 0.73 1.0 v out <1.1 0.50 0.64 1.1 v out <1.2 0.45 0.61 1.2 v out <1.3 0.40 0.56 1.3 v out <1.4 0.37 0.53 1.4 v out <1.5 0.34 0.48 1.5 v out <1.8 0.31 0.43 1.8 v out <2.1 0.27 0.39 2.1 v out <2.5 0.245 0.36 2.5 v out <2.8 0.215 0.31 2.8 v out <3.0 0.20 0.29 3.0 v out <3.3 0.19 0.28 3.3 v out <3.6 0.18 0.27 3.6 v out 0.175 0.27
rp202x no.ea-279-160324 7 typical application c1 rp202x series v dd v out ce gnd c2 v out v in (external components) c1, c2 : ceramic capacitor 0.47 ? f murata: grm155b31a474ke14 technical notes when using these ics, consider the following points: phase compensation in these ics, phase compensation is made for securing st able operation even if the load current is varied. for this purpose, use a capacitor c2 with 0.47 ? f or more and good 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. becaus e of this, test these ics with as same external components as ones to be used on the pcb.) pcb layout the impedances of v dd line and gnd line has to be low as possibl e. the high impedances may result in the unstable operation or a noise pickup. the output capaci tor with 0.47f or more should be placed between v dd and gnd. the line from v dd to the output capacitor, and the line from the output capacitor to gnd must be wired as short as possible. the output capacitor is placed between v out and gnd as phase compensation. the line from v out to the output capacitor, and the line from the capacito r to gnd must be wired as short as possible. please refer to the ?basic test circuit? below.
rp202 no.ea-279-160324 8 test circuits c1 rp202x series v dd v out ce gnd v c2 v out i out c1=ceramic 0.47 ? f c2=ceramic 0.47 ? f basic test circuit c1 rp202x series v dd v out ce gnd c2 a i ss c1=ceramic 0.47 ? f c2=ceramic 0.47 ? f v out test circuit for supply current rp202x series v dd v out ce gnd c2 pulse generator i out c2=ceramic 0.47 ? f p. g. test circuit for ripple rejection c1 rp202x series v dd v out ce gnd c2 i outa i outb c1=ceramic 0.47 ? f c2=ceramic 0.47 ? f v out test circuit for load transient response
rp202x 9 typical characteristics 1 output voltage vs. output current c1 ? 0.47 ? f, c2 ? 0.47 ? f, ta ? 25 ? c rp202x08xx rp202x18xx rp202x28xx rp202x40xx 2 output voltage vs. input voltage c1 ? 0.47 ? f, c2 ? 0.47 ? f, t a ? 25 ? c rp202x08xx rp202x18xx 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 0 100 200 300 400 500 output current i out (ma) output voltage v out (v) 1.4v 1..8v 2.8v 3.8v 5.25v 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 0 100 200 300 400 500 output current i out (ma) output voltage v out (v) 2.8v 3.8v 4.8v 5.25v 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 0 100 200 300 400 500 output current i out (ma) output voltage v out (v) 3.8v 4.8v 5.25v 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 0 100 200 300 400 500 output current i out (ma) output voltage v out (v) 5v 5.25v 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 012345 input voltage v in (v) output voltage v out (v) iout=1ma iout =30ma iout =50ma 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 012345 input voltage v in (v) output voltage v out (v) iout=1ma iout=30ma iout=50ma
rp202 no.ea-279-160324 10 rp202x28xx rp202x40xx 3) supply current vs. input voltage c1 ? 0.47 ? f, c2 ? 0.47 ? f, t a ? 25 ? c rp202x08xx rp202x18xx rp202x28xx rp202x40xx 0.0 0.5 1.0 1.5 2.0 2.5 3.0 012345 input voltage v in (v) output voltage v out (v) iout=1ma iout=30ma iout=50ma 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 012345 input voltage v in (v) output voltage v out (v) iout=1ma iout=30ma iout=50ma 0 10 20 30 40 50 60 70 80 90 100 012345 input voltage v in (v) supply current iss (a) iout=0ma iout=10ma 0 10 20 30 40 50 60 70 80 90 100 012345 input voltage v in (v) supply current iss (a) iout=0ma iout=10ma 0 10 20 30 40 50 60 70 80 90 100 012345 input voltage v in (v) supply current iss (a) iout=0ma iout=10ma 0 10 20 30 40 50 60 70 80 90 100 012345 input voltage v in (v) supply current iss (a) iout=0ma iout=10ma
rp202x 11 4 supply current vs. output current c1 ? 0.47f, c2 ? 0.47f, t a ? 25 rp202x08xx rp202x18xx v in =1.8v v in =2.8v rp202x28xx rp202x40xx v in =3.8v v in =5.0v 5 output voltage vs. temperature c1 ? 0.47f, c2 ? 0.47f, i out ? 1ma rp202x08xx rp202x18xx v in =1.8v v in =2.8v 0 50 100 150 200 0.1 1 10 100 1000 output current i out (ma) supply current iss (a) 0 50 100 150 200 0.1 1 10 100 1000 output current i out (ma) supply current iss (a) 0.1ma -> 150ma low pow ermode to fastmode 150ma -> 0.1ma fastmode to low pow ertmode 0.1ma -> 150ma low pow ermode to fastmode 150ma -> 0.1ma fastmode to low pow ertmode 0 50 100 150 200 0.1 1 10 100 1000 output current i out (ma) supply current iss (a) 0 50 100 150 200 0.1 1 10 100 1000 output current i out (ma) supply current iss (a) 0.1ma -> 150ma low pow ermode to fastmode 150ma -> 0.1ma fastmode to low pow ertmode 0.1ma -> 150ma low pow ermode to fastmode 150ma -> 0.1ma fastmode to low pow ertmode 0.75 0.76 0.77 0.78 0.79 0.80 0.81 0.82 0.83 0.84 0.85 -50 -25 0 25 50 75 100 temperature (c) output voltage (v) 1.75 1.76 1.77 1.78 1.79 1.80 1.81 1.82 1.83 1.84 1.85 -50 -25 0 25 50 75 100 temperature (c) output voltage (v)
rp202 no.ea-279-160324 12 rp202x28xx rp202x40xx v in =3.8v v in =5.0v 6 supply current vs. temperature c1 ? 0.47f, c2 ? 0.47f rp202x08xx rp202x18xx (auto eco low power mode) (auto eco low power mode) v in =1.8v , i out =0ma v in =2.8v , i out =0ma rp202x28xx rp202x40xx (auto eco low power mode) (auto eco low power mode) v in =3.8v , i out =0ma v in =5.0v , i out =0ma 2.75 2.76 2.77 2.78 2.79 2.80 2.81 2.82 2.83 2.84 2.85 -50 -25 0 25 50 75 100 temperature (c) output voltage (v) 3.90 3.92 3.94 3.96 3.98 4.00 4.02 4.04 4.06 4.08 4.10 -50 -25 0 25 50 75 100 temperature (c) output voltage (v) 1.0 1.5 2.0 2.5 3.0 3.5 4.0 -50 -25 0 25 50 75 100 temperature(c) supply current (a) 1.0 1.5 2.0 2.5 3.0 3.5 4.0 -50-25 0 25 50 75100 temperature(c) supply current (a) 1.0 1.5 2.0 2.5 3.0 3.5 4.0 -50 -25 0 25 50 75 100 temperature(c) supply current (a) 1.0 1.5 2.0 2.5 3.0 3.5 4.0 -50-25 0 25 50 75100 temperature(c) supply current (a)
rp202x 13 rp202x08xx rp202x18xx (auto eco fast mode) (auto eco fast mode) v in =1.8v , i out =10ma v in =2.8v , i out =10ma rp202x28xx rp202x40xx (auto eco fast mode) (auto eco fast mode) v in =3.8v , i out =10ma v in =5.0v , i out =10ma 7 dropout voltage vs. output current c1 ? 0.47f, c2 ? 0.47f rp202x08xx rp202x10xx 35 40 45 50 55 60 65 -50 -25 0 25 50 75 100 temperature(c) supply current (a) 35 40 45 50 55 60 65 -50-25 0 255075100 temperature(c) supply current (a) 35 40 45 50 55 60 65 -50-25 0 255075100 temperature(c) supply current (a) 35 40 45 50 55 60 65 -50-25 0 255075100 temperature(c) supply current (a) 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0 50 100 150 200 output current i out (ma) dropout voltage v dif (v) -40c 25c 85c 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0 50 100 150 200 output current i out (ma) dropout voltage v dif (v) -40c 25c 85c
rp202 no.ea-279-160324 14 rp202x12xx rp202x15xx rp202x18xx rp202x21xx rp202x28xx rp202x33xx 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0 50 100 150 200 output current i out (ma) dropout voltage v dif (v) -40c 25c 85c 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0 50 100 150 200 output current i out (ma) dropout voltage v dif (v) -40c 25c 85c 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0 50 100 150 200 output current i out (ma) dropout voltage v dif (v) -40c 25c 85c 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0 50 100 150 200 output current i out (ma) dropout voltage v dif (v) -40c 25c 85c 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0 50 100 150 200 output current i out (ma) dropout voltage v dif (v) -40c 25c 85c 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0 50 100 150 200 output current i out (ma) dropout voltage v dif (v) -40c 25c 85c
rp202x 15 rp202x40xx 8 dropout voltage vs set output voltage 9 maximum output current vs. set output voltage c1 ? 0.47f, c2 ? 0.47f, v in =1.4v 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0 50 100 150 200 output current i out (ma) dropout voltage v dif (v) -40c 25c 85c 0 0.1 0.2 0.3 0.4 0.5 0.6 01234 set output voltage v reg (v) dropout voltage v dif (v) 1ma 30ma 50ma 200ma 60 80 100 120 140 160 180 200 220 240 0.8 0.9 1 1.1 1.2 1.3 set output voltage v out (v) output current i out (ma) 25c 85c
rp202 no.ea-279-160324 16
rp202x 17 10 ripple rejection vs. input bias voltage c1 ? none, c2 ? 0.47f, ripple ? 0.2vp-p, t a ? 25 ? c rp202x08xx rp202x18xx (auto eco low power mode) (auto eco low power mode) i out =1ma i out =1ma rp202x28xx rp202x40xx (auto eco low power mode) (auto eco low power mode) i out =1ma i out =1ma rp202x08xx rp202x18xx (auto eco fast mode) (auto eco fast mode) i out =30ma i out =30ma 0 10 20 30 40 50 60 70 2.8 3.3 3.8 4.3 4.8 5.3 input voltage v in (v) ripple rejection rr(db) 0.1khz 1khz 10khz 100khz 0 10 20 30 40 50 60 70 4.0 4.5 5.0 input voltage v in (v) ripple rejection rr(db) 0.1khz 1khz 10khz 100khz 0 10 20 30 40 50 60 70 80 90 100 0.8 1.8 2.8 3.8 4.8 input voltage v in (v) ripple rejection rr(db) 0.1khz 1khz 10khz 100khz 0 10 20 30 40 50 60 70 80 90 100 1.8 2.8 3.8 4.8 input voltage v in (v) ripple rejection rr(db) 0.1khz 1khz 10khz 100khz 0 10 20 30 40 50 60 70 0.81.82.83.84.8 input voltage v in (v) ripple rejection rr(db) 0.1khz 1khz 10khz 100khz 0 10 20 30 40 50 60 70 1.8 2.8 3.8 4.8 input voltage v in (v) ripple rejection rr(db) 0.1khz 1khz 10khz 100khz
rp202 no.ea-279-160324 18 rp202x28xx rp202x40xx (auto eco fast mode) (auto eco fast mode) i out =30ma i out =30ma 11 ripple rejection vs. frequency c1 ? none, c2 ? 0.47f, ripple ? 0.2vp-p, t a ? 25 ? c rp202x08xx rp202x18xx v in =1.8v+0.2vp-p v in =2.8v+0.2vp-p rp202x28xx rp202x40xx v in =3.8v+0.2vp-p v in =5.0v+0.2vp-p 0 10 20 30 40 50 60 70 80 90 100 2.8 3.3 3.8 4.3 4.8 5.3 input voltage v in (v) ripple rejection rr(db) 0.1khz 1khz 10khz 100khz 0 10 20 30 40 50 60 70 80 90 100 4.0 4.2 4.4 4.6 4.8 5.0 5.2 input voltage v in (v) ripple rejection rr(db) 0.1khz 1khz 10khz 100khz 0 10 20 30 40 50 60 70 80 90 100 0.1 1 10 100 1000 frequency [khz] ripple rejection (db) 1ma 30ma 50ma 100ma 200ma 0 10 20 30 40 50 60 70 80 90 100 0.1 1 10 100 1000 frequency [khz] ripple rejection (db) 1ma 30ma 50ma 100ma 200ma 0 10 20 30 40 50 60 70 80 90 100 0.1 1 10 100 1000 frequency [khz] ripple rejection (db) 1ma 30ma 50ma 100ma 200ma 0 10 20 30 40 50 60 70 80 90 100 0.1 1 10 100 1000 frequency [khz] ripple rejection (db) 1ma 30ma 50ma 100ma 200ma
rp202x 19 12 input transient response c1 ? none, c2 ? 0.47f, tr ? tf ? 5 ? s, t a ? 25 ? c rp202x08xx rp202x18xx (auto eco low power mode) (auto eco low power mode) v in =1.8v ? 2.8v, i out =1ma v in =2.8v ? 3.8v, i out =1ma rp202x28xx rp202x40xx (auto eco low power mode) (auto eco low power mode) v in =3.8v ? 4.8v, i out =1ma v in =5.0v ? 5.25v, i out =1ma rp202x08xx rp202x18xx (auto eco fast mode) (auto eco fast mode) v in =1.8v ? 2.8v, i out =30ma v in =2.8v ? 3.8v, i out =30ma 0.74 0.76 0.78 0.80 0.82 0.84 0.86 -0.5 0 0.5 1 1.5 2 2.5 3 3.5 4 time t (ms) output voltage v out (v) 0 1 2 3 4 input voltage v in (v) 1.75 1.77 1.79 1.81 1.83 1.85 1.87 -0.500.511.522.533.54 time t(ms) output voltage v out (v) 0 1 2 3 4 5 input voltage v in (v) input voltage output voltage input voltage output voltage 2.77 2.79 2.81 2.83 2.85 2.87 2.89 -0.5 0 0.5 1 1.5 2 2.5 3 3.5 4 time t(ms ) output voltage v out (v) 0 1 2 3 4 5 6 input voltage v in (v) 3.96 3.98 4.00 4.02 4.04 4.06 4.08 -0.5 0 0.5 1 1.5 2 2.5 3 3.5 4 time t(ms) output voltage v out (v) 0 1 2 3 4 5 6 input voltage v in (v) input voltage input voltage output voltage output voltage 0.799 0.800 0.801 0.802 0.803 0.804 0.805 0.806 0.807 0.808 0.809 -0.5 0 0.5 1 1.5 2 2.5 3 3.5 4 time t (ms ) output voltage v out (v) 0 1 2 3 4 input voltage v in (v) 1.800 1.801 1.802 1.803 1.804 1.805 1.806 1.807 1.808 1.809 1.810 -0.5 0 0.5 1 1.5 2 2.5 3 3.5 4 time t(ms) output voltage v out (v) 0 1 2 3 4 5 input voltage v in (v) input voltage input voltage output voltage output voltage
rp202 no.ea-279-160324 20 rp202x28xx rp202x40xx (auto eco fast mode) (auto eco fast mode) v in =3.8v ? 4.8v, i out =30ma v in =5.0v ? 5.25v, i out =30ma 13 load transient response c1 ? 0.47f, c2 ? 0.47f, tr ? tf ? 0.5s, t a ? 25 ? c rp202x08xx rp202x18xx (auto ecolow power mode ? fast mode) (auto ecolow power mode ? fast mode) v in =1.8v v in =2.8v rp202x28xx rp202x40xx (auto eco low power mode ? fast mode) (auto eco low power mode ? fast mode) v in =3.8v v in =5.0v 0.70 0.72 0.74 0.76 0.78 0.80 0.82 0.84 0.86 0.88 -20246810 time (ms ) output voltage v out (v) -140 -120 -100 -80 -60 -40 -20 0 20 40 output current i out (ma) output current 0 ? 30ma output voltage 1.7 1.72 1.74 1.76 1.78 1.8 1.82 1.84 1.86 1.88 -202468 time (ms ) output voltage v out (v) -140 -120 -100 -80 -60 -40 -20 0 20 40 output current i out (ma) output current 0 ? 30ma output voltage 2.70 2.73 2.76 2.79 2.82 2.85 2.88 2.91 2.94 2.97 -1 0 1 2 3 4 time (ms ) output voltage v out (v) -140 -120 -100 -80 -60 -40 -20 0 20 40 output current i out (ma) output current 0 ? 30ma output voltage 3.90 3.93 3.96 3.99 4.02 4.05 4.08 4.11 4.14 4.17 -0.5 0 0.5 1 1.5 2 time (ms ) output voltage v out (v) -140 -120 -100 -80 -60 -40 -20 0 20 40 output current i out (ma) output current 0 ? 30ma output voltage 2.809 2.810 2.811 2.812 2.813 2.814 2.815 2.816 2.817 2.818 2.819 -0.5 0 0.5 1 1.5 2 2.5 3 3.5 4 time t(ms) output voltage v out (v) 0 1 2 3 4 5 6 input voltage v in (v) 4.005 4.007 4.009 4.011 4.013 4.015 4.017 4.019 4.021 4.023 4.025 -0.5 0 0.5 1 1.5 2 2.5 3 3.5 4 time t(ms) output voltage v out (v) 0 1 2 3 4 5 6 input voltage v in (v) input voltage input voltage output voltage output voltage
rp202x 21 rp202x08xx rp202x18xx (auto eco fast mode) (auto eco fast mode) v in =1.8v v in =2.8v rp202x28xx rp202x40xx (auto eco fast mode) (auto eco fast mode) v in =3.8v v in =5.0v rp202x08xx rp202x18xx (auto ecolow power mode ? fast mode) (auto eco low power mode ? fast mode) v in =1.8v v in =2.8v 0.76 0.78 0.80 0.82 0.84 0.86 0.88 0.90 -2020 60100140180 time ( s) output voltage vout (v) -200 -150 -100 -50 0 50 100 150 output current iout (ma) output voltage output current 50 ? 100ma 1.76 1.78 1.80 1.82 1.84 1.86 1.88 1.90 -20 20 60 100 140 180 time ( s) output voltage vout (v) -200 -150 -100 -50 0 50 100 150 output current iout (ma) output voltage output current 50 ? 100ma 2.76 2.78 2.80 2.82 2.84 2.86 2.88 2.90 -2020 60100140180 time ( s) output voltage v out (v) -200 -150 -100 -50 0 50 100 150 output current i out (ma) output voltage output current 50 ? 100ma 3.96 3.98 4.00 4.02 4.04 4.06 4.08 4.10 -20 20 60 100 140 180 time ( s) output voltage vout (v) -200 -150 -100 -50 0 50 100 150 output current iout(ma) output voltage output current 50 ? 100ma 0.60 0.65 0.70 0.75 0.80 0.85 0.90 0.95 1.00 -0.02 0 0.02 0.04 0.06 0.08 time (ms ) output voltage v out (v) -600 -500 -400 -300 -200 -100 0 100 200 output current i out (ma) output current 0.1 ? 100ma output voltage 1.60 1.65 1.70 1.75 1.80 1.85 1.90 1.95 2.00 -0.02 0 0.02 0.04 0.06 0.08 time (ms ) output voltage v out (v) -600 -500 -400 -300 -200 -100 0 100 200 output current i out (ma) output current 0.1 ? 100ma output voltage
rp202 no.ea-279-160324 22 rp202x28xx rp202x40xx (auto eco low power mode ? fast mode) (auto eco low power mode ? fast mode) v in =3.8v v in =5.0v 14 turn on waveform (output voltage) with ce pin c1 ? 0.47f, t a ? 25 ? c rp202x08xx rp202x18xx v in =1.8v, i out =0ma v in =2.8v, i out =0ma rp202x28xx rp202x40xx v in =3.8v, i out =0ma v in =5.0v, i out =0ma 2.60 2.65 2.70 2.75 2.80 2.85 2.90 2.95 3.00 -0.02 0 0.02 0.04 0.06 0.08 time (ms ) output voltage v out (v) -600 -500 -400 -300 -200 -100 0 100 200 output current i out (ma) output current 0.1 ? 100ma output voltage 3.80 3.85 3.90 3.95 4.00 4.05 4.10 4.15 4.20 -0.02 0 0.02 0.04 0.06 0.08 time (ms ) output voltage v out (v) -600 -500 -400 -300 -200 -100 0 100 200 output current i out (ma) output current 0.1 ? 100ma output voltage 0.0 0.5 1.0 1.5 2.0 2.5 -50 0 50 100 150 200 time t ( s) input voltage (v) 0.0 0.2 0.4 0.6 0.8 1.0 output voltage (v) ce input voltage output voltage D c2=1 f D c2=2.2 f D c2=4.7 f D c2=10 f D c2=14.7 f 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 -50 0 50 100 150 200 250 time t ( s) input voltage (v) 0.0 0.5 1.0 1.5 2.0 output voltage (v) ce input voltage output voltage D c2=1 f D c2=2.2 f D c2=4.7 f D c2=10 f D c2=14.7 f 0.0 1.0 2.0 3.0 4.0 5.0 -50 50 150 250 350 time t ( s) input voltage (v) 0.0 0.7 1.4 2.1 2.8 3.5 output voltage (v) ce input voltage output voltage D c2=1 f D c2=2.2 f D c2=4.7 f D c2=10 f D c2=14.7 f 0.0 1.0 2.0 3.0 4.0 5.0 6.0 -50 50 150 250 350 450 time t ( s) input voltage (v) 0.0 1.0 2.0 3.0 4.0 output voltage (v) ce input voltage output voltage D c2=1 f D c2=2.2 f D c2=4.7 f D c2=10 f D c2=14.7 f
rp202x 23 15 turn on input waveform (input current) with ce pin c1 ? 0.47f, t a ? 25 ? c rp202x08xx rp202x18xx v in =1.8v, i out =0ma v in =2.8v, i out =0ma rp202x28xx rp202x40xx v in =3.8v, i out =0ma v in =5.0v, i out =0ma 16 turn on speed with ce pin (d version) c1 ? 0.47f, c2 ? 0.47f, t a ? 25 ? c rp202x08xx rp202x18xx v in =1.8v v in =2.8v 0.0 0.5 1.0 1.5 -50 50 150 250 350 450 time t( s) output voltage (v) 0 2 4 ce input voltage (v) ce input voltage output voltage ----- i out =30ma ----- i out =150ma 0.0 1.0 2.0 3.0 -50 50 150 250 350 450 time t ( s) output voltage (v) 0 2 4 ce input voltage (v) ce input voltage output voltage ----- i out =30ma ----- i out =150ma 0.0 0.5 1.0 1.5 2.0 2.5 -50 0 50 100 150 200 time t( s) input voltage (v) 0 100 200 300 400 500 rush current (ma) ce input voltage rush current D c2=1 f D c2=2.2 f D c2=4.7 f D c2=10 f D c2=14.7 f 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 -50 0 50 100 150 200 250 time t( s) input voltage (v) 0 100 200 300 400 500 rush current (ma) ce input voltage rush current D c2=1 f D c2=2.2 f D c2=4.7 f D c2=10 f D c2=14.7 f 0.0 1.0 2.0 3.0 4.0 5.0 -50 50 150 250 350 time t( s) input voltage (v) 0 100 200 300 400 500 rush current (ma) rush current ce input voltage D c2=1 f D c2=2.2 f D c2=4.7 f D c2=10 f D c2=14.7 f 0.0 1.0 2.0 3.0 4.0 5.0 6.0 -5050150250350450 time t( s) input voltage (v) 0 100 200 300 400 500 rush current (ma) rush current ce input voltage D c2=1 f D c2=2.2 f D c2=4.7 f D c2=10 f D c2=14.7 f
rp202 no.ea-279-160324 24 rp202x28xx rp202x40xx v in =3.8v v in =5.0v 17 turn off speed with ce pin (d version) c1 ? 0.47f, c2 ? 0.47f, t a ? 25 ? c rp202x08xx rp202x18xx v in =1.8v v in =2.8v rp202x28xx rp202x40xx v in =3.8v v in =5.0v 0.0 1.0 2.0 3.0 4.0 -50 50 150 250 350 450 time t( s) ioutput voltage (v) -8 -6 -4 -2 0 2 4 ce input voltage (v) ce input voltage output voltage ----- i out =30ma ----- i out =150ma 0.0 1.0 2.0 3.0 4.0 5.0 -50 50 150 250 350 450 time t ( s) output voltage (v) 0 2 4 6 ce input voltage (v) ce input voltage output voltage ----- i out =30ma ----- i out =150ma -0.5 0.0 0.5 1.0 -50 0 50 100 150 200 250 300 time t( s) output voltage (v) 0 1 2 3 ce input voltage (v) ce input voltage output voltage ----- i out =0ma ----- i out =30ma ----- i out =150ma -0.5 0.0 0.5 1.0 1.5 2.0 2.5 -50 0 50 100 150 200 250 300 time t ( s) output voltage (v) 0 1 2 3 4 ce input voltage (v) ce input voltage output voltage ----- iout=0ma ----- iout=30ma ----- iout=150ma -1 0 1 2 3 4 -50 0 50 100 150 200 250 300 time t( s) output voltage (v) 0 2 4 6 ce input voltage (v) ce input voltage output voltage ----- i out =0ma ----- i out =30ma ----- i out =150ma -1 0 1 2 3 4 5 -50 0 50 100 150 200 250 300 time t( s) output voltage (v) 0 2 4 6 ce input voltage (v) ce input voltage output voltage ----- iout=0ma ----- iout=30ma ----- iout=150ma
rp202 no.ea-279-160324 26 esr vs. output current when using these ics, consider the following points: the relations between i out (output current) and esr of an 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. measurement conditions frequency band : 10hz to 2mhz temperature : ? 40 ? c to 85 ? c c1, c2 : 0.47 f rp202x08xx rp202x18xx rp202x28xx rp202x40xx 0.01 0.1 1 10 100 1000 0 50 100 150 200 output current (ma) esr ( ? ) ta=85c ta=-40c 0.01 0.1 1 10 100 1000 0 50 100 150 200 output current (ma) esr ( ? ) ta=85c ta=-40c 0.01 0.1 1 10 100 1000 0 50 100 150 200 output current (ma) esr ( ? ) ta=85c ta=-40c 0.01 0.1 1 10 100 1000 0 50 100 150 200 output current (ma) esr ( ? ) ta=85c ta=-40c
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