mitsumi microminiature low-power consumption low-saturation regulator mm1385 microminiature low-power consumption low-saturation regulator monolithic ic mm1385 outline this ic is a microminiature stabilized power supply device featuring an output voltage precision of within 2% and output currents of up to 200ma; the input/output voltage difference at 50ma is only 0.1v. this chip is provided with an output noise reduction pin and output on/off control pin, and is ideal for use in portable equipment. features 1. no-load input current 95a typ. 2. i/o voltage difference 0.1v typ.(io=50ma) 3. ripple rejection ratio 70db typ. 4. output current 150ma max. 5. output noise voltage 35vrms typ. 6. output voltage rank 2~3.3v(0.1v step), 3.5v/3.8v/4v/4.2v/4.5v/4.8v/5v/5.2v 7. output on/off control high on, low off package sot-25a (mm1385 n) * the output voltage rank appears in the boxes. pin assignment 13 5 2 4 sot - 25a (top view) applications 1. cordless phones 2. portable phones, phs 3. portable minidiscs 4. portable equipment which uses batteries 1 c ont 2 gnd 3 noise 4 v out 5 v in
mitsumi microminiature low-power consumption low-saturation regulator mm1385 block diagram absolute maximum ratings recomnended operating conditions item symbol ratings units storage temperature t stg - 40~+125 c operating temperature t opr - 20~+75 c power supply current v cc - 0.3~+12 v output current i out 200 ma power consumption pd 150 mw item symbol ratings units operating temperature top - 20~+75 c output current iop 0~150 ma operating voltage vop 1.8~12 v
mitsumi microminiature low-power consumption low-saturation regulator mm1385 measuring circuit electrical electrical characteristics (except where noted otherwise,ta=25 c) item symbol measurement conditions min. typ. max. units output voltage vo v in =vo+1v, io=30ma, v out v no-load consumption current iccq1 v in =vo+1v, io=0ma 95 190 ? input current while off iccq2 v in =vo+1v, v cont =0v 0.1 ? i/o voltage difference vd min. v in =vo - 0.2v, io=50ma 0.1 0.2 v input fluctuations v1 v in =vo+1v~10v, io=50ma 10 20 mv load fluctuation v2 v in =vo+1v, io=0~100ma 30 60 mv output voltage temperature coefficient vo/ t tj= - 20~+75 c, v in =vo+1v, io=30ma 100 ppm/ c ripple rejection rate rr v in =vo+1v, io=30ma, v ripple =1v p - p , f=120hz 50 70 db output noise voltage vn v in =vo+1v, f=20~80khz, io=30ma, cn=0.01? ?rms c ont pin current while on i on v cont =1.6v 5 10 a c ont pin high level h 1.6 v c ont pin low level l - 0.3 0.4 v v out - 2% v out +2% 35 (3v item) v in +0.3v output voltage rank rank voltage rank voltage w 5.2v g 3.1v a 5.0v h 3.0v q 4.9v j 2.9v z 4.8v k 2.8v x 4.6v l 2.7v b 4.5v m 2.6v v 4.2v n 2.5v c 4.0v p 2.4v y 3.8v r 2.3v i 3.6v s 2.2v d 3.5v t 2.1v e 3.3v u 2.0v f 3.2v
mitsumi microminiature low-power consumption low-saturation regulator mm1385 no-load input current ripple rejection rate (v in =4v, i o =30ma, vripple=1v, c out =4.7?) 02 46810 0 0.5 1 02 6810 1.5 2 input voltage (v) consuption current (ma) 10 100 1k 10k 100k 1m - 100 - 90 - 80 - 70 - 60 - 50 - 40 - 30 - 20 - 10 0 frequency (hz) ripple rejection rate (hz) consuption current (v in =4v) output noise voltage (v in =4v, i o =30ma, c out =4.7 f) 0 0 0204 06080100 120 140 160 0 1 2 3 4 5 6 7 8 9 output current (ma) consuption current (ma) 0.1 0.01 0.001 0 20 40 60 80 100 noise pin capacitance ( f) output noise voltage ( vrms) i/o voltage difference (v in =2.8v) input fluctuation (i o =30ma) 0 0 0.05 0.1 0.15 0.2 0.25 0.3 0204 06080 100 120 140 160 180 200 output current (ma) i/o voltage difference (v) 456789101 1121314 - 20 - 10 0 10 20 input voltage (v) input fiuctuation (mv) current limit (v in =4v) load fluctuation rate (v in =4v) 050 100 150 200 250 300 0 0.5 1 1.5 2 2.5 3 3.5 output current (ma) output voltage (v) 0204 06080 100120140160180200 - 60 - 50 - 40 - 30 - 20 - 10 0 10 20 output current (ma) load fiuctuation rate (mv) characteristics (represent data. h rank) esr stable region v in =0~12v, c out =4.7uf (ceramic, esr=0.02 ? at 100khz) 1000 100 10 1 0.1 110 0.1 0.01 100 i o output current (ma) esr ( ? ) stable region instability region instability region
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