njm2878 - 1 - ver.2008-11-12 123 4 5 123 4 5 njm2878f3 low dropout voltage regulator general description package outline the njm2878 is a 150ma output low dropout voltage regulator with on/off control. advanced bipolar technology achieves low noise, high ripple rejection, high accuracy and low quiescent current. small packaging (sc-88a/sc82ab) and very small packaging (eson4), 0.47f small decoupling capacitor and built-in noise bypass capacitor make the njm2878 suitable for space conscious applications. features high ripple rejection 75db typ. (f=1khz vo=3v version) output noise voltage vno=45vrms typ. output capacitor with 0.47f ceramic capacitor(vo 2.7v version) output current io(max.)=150ma high precision output vo 1.0% low dropout voltage 0.10v typ. (io=60ma) on/off control (active high) internal thermal overload protection internal over current protection bipolar technology package outline sc88a(njm2878f3) / sc82 ab(njm2878f4) ) / eson4-f1(njm2878kf1) pin configuration equivalent circuit v out thermal protection bandgap reference v in control gnd 1. contro l 2. gnd 3. nc 4. v out 5. v in njm2878f3 njm2878f4 3 4 1 2 1. contro l 2. gnd 3. v out 4. v in njm2878f4 njm2878kf1 3 4 1 2 1. v out 2. gnd 3. control 4. v in njm2878f4 njm2878kf1
njm2878 output voltage rank list the white column shows applicable voltage rank(s) the white column shows applicable voltage rank(s) device name v out device name v out njm2878f3/f4-15 1.5v njm2878f3/f4-35 3.5v njm2878f3/f4-16 1.6v njm2878f3/f4-36 3.6v njm2878f3/f4-17 1.7v njm2878f3/f4-37 3.7v njm2878f3/f4-18 1.8v njm2878f3/f4-38 3.8v njm2878f3/f4-19 1.9v njm2878f3/f4-39 3.9v njm2878f3/f4-02 2.0v njm2878f3/f4-04 4.0v njm2878f3/f4-21 2.1v njm2878f3/f4-41 4.1v njm2878f3/f4-22 2.2v njm2878f3/f4-42 4.2v njm2878f3/f4-23 2.3v njm2878f3/f4-43 4.3v njm2878f3/f4-24 2.4v njm2878f3/f4-44 4.4v njm2878f3/f4-25 2.5v njm2878f3/f4-45 4.5v njm2878f3/f4-26 2.6v njm2878f3/f4-46 4.6v njm2878f3/f4-27 2.7v njm2878f3/f4-47 4.7v njm2878f3/f4-28 2.8v njm2878f3/f4-48 4.8v njm2878f3/f4-29 2.9v njm2878f3/f4-49 4.9v njm2878f3/f4-03 3.0v njm2878f3/f4-05 5.0v njm2878f3/f4-31 3.1v njm2878f3/f4-32 3.2v njm2878f3/f4-33 3.3v njm2878f3/f4-34 3.4v device name v out device name v out njm2878kf1-15 1.5v njm2878kf1-35 3.5v njm2878kf1-16 1.6v njm2878kf1-36 3.6v njm2878kf1-17 1.7v njm2878kf1-37 3.7v njm2878kf1-18 1.8v njm2878kf1-38 3.8v njm2878kf1-19 1.9v njm2878kf1-39 3.9v njm2878kf1-02 2.0v njm2878kf1-04 4.0v njm2878kf1-21 2.1v njm2878kf1-41 4.1v njm2878kf1-22 2.2v njm2878kf1-42 4.2v njm2878kf1-23 2.3v njm2878kf1-43 4.3v njm2878kf1-24 2.4v njm2878kf1-44 4.4v njm2878kf1-25 2.5v njm2878kf1-45 4.5v njm2878kf1-26 2.6v njm2878kf1-46 4.6v njm2878kf1-27 2.7v njm2878kf1-47 4.7v njm2878kf1-28 2.8v njm2878kf1-48 4.8v njm2878kf1-29 2.9v njm2878kf1-49 4.9v njm2878kf1-03 3.0v njm2878kf1-05 5.0v njm2878kf1-31 3.1v njm2878kf1-32 3.2v njm2878kf1-33 3.3v njm2878kf1-34 3.4v
njm2878 - 3 - ver.2008-11-12 absolute maximum ratings (ta=25 c) parameter symbol ratings unit input voltage v in +10 v control voltage v cont +10 v sc88a/sc82ab 250(*1) 150(*2) power dissipation p d eson4 800(*3) mw operating temperature topr ? 40 +85 c storage temperature tstg ? 40 +125 c (*1): mounted on glass epoxy board based on eia/jedec. (114.3 76.2 1.6mm: 2layers fr-4) (*2): mounted on glass epoxy board based on eia/jedec. (101.5 114.57 1.6mm: 2layers) (*3): mounted on glass epoxy board based on eia/jedec. (101.5 114.57 1.6mm: 4layers internal foil area: 99.5 99.5mm) operating voltage v in =+2.3 +9v (in case of vo<2.1v version) electrical characteristics (v in =vo+1v, c in =0.1f, co=0.47f: vo 2.7v (co=1.0f : 1.8v3v), io=30ma ? ? 0.10 %/v load regulation ? vo/ ? io io=0 100ma ? ? 0.016 %/ma dropout voltage (*4) ? v i ? o io=60ma ? 0.10 0.18 v ripple rejection rr ein=200mvrms, f=1khz, io=10ma, vo=3v version ? 75 ? db average temperature coefficient of output voltage ? vo/ ? ta ta = 0 +85 c, io=10ma ? 50 ? ppm/ c output noise voltage v no1 f=10hz 80khz, io=10ma, vo=3v version ? 45 ? vrms control current i cont v cont =1.6v ? 3 12 a control voltage for on-state v cont(on) 1.6 ? ? v control voltage for off-state v cont(off) ? ? 0.6 v input voltage v in ? ? 9 v (*4): the output voltage excludes under 2.1v. the above specification is a common spec ification for all output voltages. therefore, it may be different from the indivi dual specification for a specific output voltage.
njm2878 test circuit njm2878 v in v in v out control gnd 0.1f i in i cont v cont i out v out v v a a (ceramic) 0.47f *5 *5 : 1.8v njm2878 - 5 - ver.2008-11-12 2 in use of on/off control: njm2878 v in v out control gnd 0.1f v out v in r 0.47f *6 *6 : 1.8v njm2878 power dissipation vs. ambient temperature (sc-88a/sc82ab) njm2878f3/f4 power dissipation (topr=-40~+85c,tj=125c) 0 100 200 300 400 500 -50 -25 0 25 50 75 100 ambient temperature ta(c) power dissipation p d ( mw ) on board(114.376.21.6mm, fr-4)
njm2878 - 7 - ver.2008-11-12 typical characteristics 2.7 2.8 2.9 3 3.1 3.2 2.7 2.8 2.9 3 3.1 3.2 3.3 3.4 output voltage : vo(v) input voltage : v in (v) njm2878_3.0v output voltage vs. input voltage @:ta=25 o c co=0.47 f(ceramic) io=0a io=100ma io=30ma 0 0.5 1 1.5 2 2.5 3 3.5 4 0 50 100 150 200 250 300 output voltage : vo(v) njm2878_3.0v output voltage vs. output current @:ta=25 o c v in =4.0v co =0.4 7 f(ceramic) output current : io(ma) 0 5 10 15 20 0 50 100 150 200 ground pin current : i gn d (ma) njm2878_3.0v ground pin current v.s. output current @:ta=25 o c v in =4.0v co=0.47 f(ceramic) output current : i o (ma) 0 0.05 0.1 0.15 0.2 0.25 0.3 0 50 100 150 200 output current:io(ma) @:ta=25 o c co =0 .4 7 f(ceramic) dropout voltage:dv i-o (v) njm2878_3.0v dropout voltage vs. output current 0 5 10 15 20 25 30 0 0.5 1 1.5 2 2.5 3 3.5 4 @:ta=25 o c v in =4.0v co=0.47 f(ceramic) io=30ma njm2878_3.0v control current vs. control voltage rc=0 ? rc=100k ? rc=50k ? control current : i cont ( a) control voltage : v co nt (v) 0 0.5 1 1.5 2 2.5 3 3.5 4 00.511.522.53 @:ta=25 o c v in =4.0v co=0.47 f(ceramic) io=30ma njm2878_3.0v output voltage vs. control voltage control voltage : v cont (v) output voltage : vo(v) rc=0 ? rc=50k ? rc=100k ?
njm2878 typical characteristics -50 -40 -30 -20 -10 0 0 50 100 150 200 load regulation : dvo/dio(mv) output current : io(ma) @:ta=25 o c v in =4.0v co=0.47 f(ceramic) njm2878_3.0v load regulation vs. output current 0 50 100 150 200 250 300 45678910 peak output current : io ma x (ma) @:ta=25 o c co =0 .4 7 f( ceramic) input voltage : v in (v) njm2878_3.0v peak output current vs. input voltage 0 500 1000 1500 2000 0246810 quiescent current : i q ( a) njm2878_3.0v quiescent current v.s. input voltage @:ta=25 o c output is open. co=0.47 f(ceramic) including icont input voltage : v in (v) 0 20 40 60 80 100 0.001 0.01 0.1 1 10 100 output current :io [ma] output noise voltage :vn [ vrms] njm2878_3.0v output noise voltage vs. output current @:ta=25 o c v in =4.0v co=0.47 f lpf: 80khz 20 30 40 50 60 70 80 90 100 0.01 0.1 1 10 100 ripple rejection ratio : rr (db) frequency : f (hz) njm2878_3.0v ripple rejection ratio v.s. frequency io=0ma @:ta=25 o c v in =4 .0v ein=200mvrms co=0.47 f( cera mic) 10 100 1k 10k 100k io=10ma io=30ma 20 30 40 50 60 70 80 90 100 0.001 0.01 0.1 1 10 100 output current : io(ma) ripple rejection : rr (db) njm2878_3.0v ripple rejection vs. output current f=1khz f=10khz @:ta=25 o c v in =4.0v ein=200mvrms co=0.47 f(ceramic)
njm2878 - 9 - ver.2008-11-12 typical characteristics 0.1 1 10 100 0.001 0.01 0.1 1 10 100 10 3 0.02 output current : io(ma) @:ta=25 o c v in =4.0v co=0.47 f(ceramic) equivalent serise resistance : esr( ? ) njm2878_3.0v equivalent serise resistance vs. output current stable region 0 0.05 0.1 0.15 0.2 0.25 0.3 -50 0 50 100 150 dropout voltage :dvi-o [v] njm2878_3.0v dropout voltage v.s. temperature @:io=60ma co=0.47 f(ceramic) temperature :ta [ o c] 2.9 2.95 3 3.05 3.1 -50 0 50 100 150 output voltage :vo [v] njm2878_3.0v output voltage v.s. temperature @:v in =4.0v io=30ma co=0.47 f(ceramic) temperature :ta [ o c] 0 0.5 1 1.5 2 -50 0 50 100 150 control voltage :vcont-off [v] njm2878_3.0v control voltage v.s. t em perature @:v in =4 .0v output is open. co=0.47 f(ceramic) temperature :ta [ o c] 0 5 10 15 20 -50 0 50 100 150 @:ta=25 o c v in =4 .0v vc ont=1.6 v co =0 .4 7 f( ce ra mic) njm2878_3.0v control current vs. temperature control current : i co nt [ a] temperature :ta [ o c]
njm2878 - 10 - ver.2008-11-12 typical characteristics 0 50 100 150 200 250 300 -50 0 50 100 150 quiescent current : iq [ a] njm2878_3.0v quiescent current v.s. temperature @:v in =4 .0v output is open. co=0.47 f(ceramic) temperature :ta [ o c] 0 50 100 150 200 -50 0 50 100 150 short circuit current :isc [ma] njm2878_3.0v short circuit current v.s. temperature @:v in =4.0v output is short to ground. co=0.47 f(ceramic) temperature :ta [ o c] -0.2 -0.1 0 0.1 0.2 -50 0 50 100 150 line regulation :dvo/dvin [%/v] njm2878_3.0v line regulation v.s. t em perature @:v in =4 .0- 9.0v io=30ma co=0.47 f(ceramic) temperature :ta [ o c] 0 0.005 0.01 0.015 0.02 0.025 0.03 -50 0 50 100 150 load regulation :dvo/dio [%/ma] njm2878_3.0v load regulation v.s. temperature @:v in =4 .0v io=0-100ma co=0.47 f(ceramic) temperature :ta [ o c] 0 50 100 150 200 250 300 350 -50 0 50 100 150 output peak current :ipeak [ma] njm2878_3.0v output peak current v.s. temperature @:v in =4 .0v co=0.47 f(ceramic) temperature :ta [ o c] 0 0.5 1 1.5 2 2.5 3 3.5 -50 0 50 100 150 200 output voltage :vo [v] njm2878_3.0v output voltage v.s. tem perature @:v in =4.0v io=30ma co=0.47 f(ceramic) temperature :ta [ o c]
njm2878 - 11 - ver.2008-11-12 typical characteristics -1 0 1 2 3 4 5 6 7 -25 -20 -15 -10 -5 0 5 10 15 012345 njm2878_3.0v on/off transient response without load output voltage : vo [v] control voltage : vo [v] time : t [s] control voltage output voltage @:ta=25 o c v in =4 .0v co =0 .4 7 f( cera mic) io=0ma -1 0 1 2 3 4 5 6 7 -25 -20 -15 -10 -5 0 5 10 15 012345 njm2878_3.0v on/off transient response output voltage : vo [v] control voltage : vo [v] time : t [ms] control voltage output voltage @:ta=25 o c v in =4.0v co=0.47 f(ceramic) io=30ma 2.94 2.96 2.98 3 3.02 3.04 3.06 3.08 3.1 -250 -200 -150 -100 -50 0 50 100 150 0 40 80 120 160 200 njm2878_3.0v load transient response output voltage : vo [v] output current : io [ma] time : t [ s] output current output voltage @:ta=25 o c v in =4.0v co =0.4 7 f(ceramic) 2.94 2.96 2.98 3 3.02 3.04 3.06 3.08 3.1 -1 0 1 2 3 4 5 6 7 0 40 80 120 160 200 njm2878_3.0v input transient response output voltage : vo [v] input voltage : vo [v] time : t [ s] input voltage output voltage @:ta=25 o c v in =4.0v co=0.47 f(ceramic) io=30ma [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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