NJM2861/62 preliminary low dropout voltage regulator general description package outline the NJM2861/62 are low dropout voltage regulators. advanced bipolar technology achieves low noise, high ripple rejection and low quiescent current. features high ripple rejection 70db typ. (f=1khz) output noise voltage vno=30 vrms (cp=0.01 f) output capacitor with 1.0uf ceramic capacitor (vo 2.7v) output current io(max.)=100ma high precision output vo 1% low dropout voltage 0.10v typ. (io=60ma) on/off control (active high) internal short circuit current limit internal thermal overload protection bipolar technology package outline mtp5 (mtp5:2.82.91.1mm) pin configuration 15 2 34 15 2 34 NJM2861f njm2862f equivalent circuit v out gnd v in thermal protection bandgap reference noise bypass cont output voltage rank list device name v out device name v out njm286 f21 2.1v njm286 f33 3.3v njm286 f25 2.5v njm286 f38 3.8v njm286 f26 2.6v njm286 f05 5.0v njm286 f27 2.7v njm286 f28 2.8v njm286 f285 2.85v njm286 f03 3.0v NJM2861f njm2862f pin function 1. control (active high) 2. gnd 3. noise bypass 4. v out 5. v in pin function 1.v in 2.gnd 3.control (active high) 4.noise bypass 5.v out
NJM2861/62 preliminary absolute maximum ratings (ta=25 c) parameter symbol ratings unit input voltage v in +14 v control voltage v cont +14(note 1) v power dissipation p d 200 mw operating temperature topr ? 40 +85 c storage temperature ts t g ? 40 +125 c (note 1) when input voltage is less than +14v, the absolute maximum control voltage is equal to the input voltage. electrical characteristics (v in =vo+1v, c in =0.1 f, co=1.0uf: vo 2.7v (co=2.2uf: vo 2.6v), cp=0.01 f, ta = 2 5 c) parameter symbol test condition min. typ. max. unit output voltage vo io=30ma -1% ? +1% v quiescent current i q io=0ma, expect icont ? 120 180 a quiescent current at control off i q(off) v cont =0v ? ? 100 na output current io vo ? 0.3v 100 130 - ma line regulation ? vo/ ? v in v in =vo+1v vo+6v, io=30ma ? ? 0.10 %/v load regulation ? vo/ ? io io=0 60ma ? ? 0.03 %/ma dropout voltage ? v i ? o io=60ma ? 0.10 0.18 v ripple rejection rr ein=200mvrms,f=1khz, io=10ma v in =vo+1v, vo=3v version ? 70 ? db average temperature coefficient of output voltage ? vo/ ? ta ta = 0 85 c, io=10ma ? 50 ? ppm/ c output noise voltage v no f=10hz 80khz, io=10ma, vo=3v version ? 30 ? vrms control voltage for on-state v cont(on) 1.6 ? ? v control voltage for off-state v cont(off) ? ? 0.6 v (note 2) the above specification is a common specification for all output voltages. therefore, it may be different from the individual specification for a specific output voltage. test circuit v in v in v out control noise bypass gnd 0.1uf i in i cont v cont cp=0.01uf i out v out v v a a 1.0uf 2.2uf(vo 2.6v) or (ceramic)
NJM2861/62 preliminary typical application in case that on/off control is not required: v in v out control noise bypass gnd 0.1uf cp=0.01uf v out v in r (0 300k ? ) 1.0uf 2.2uf(vo 2.6v) or (ceramic) connect control terminal to v in terminal the quiescent current can be reduced by using a resistance ?r?. instead, it increases the minimum operating voltage. for further information, please refer to figure ?output voltage vs. control voltage?. in use of on/off control: v in v out control noise bypass gnd 0.1uf cp=0.01uf v out v in r 1.0uf 2.2uf(vo 2.6v) or (ceramic) state of control terminal: ? ?h? output is enabled. ? ?l? or ?open? output is disabled. ? noise bypass capacitance cp noise bypass capacitance cp reduces noise generated by band-gap reference circuit. noise level and ripple rejection will be improved when larger cp is used. use of smaller cp value may cause oscillation. use the cp value of 0.01uf greater to avoid the problem.
NJM2861/62 preliminary [caution] the specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions. the application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights.
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