NJM2888 -1- ver.2007-02-23 NJM2888f low dropout voltage regulator general description package outline the NJM2888 is a low dropout voltage regulator with on/off control. advanced bipolar technology achieves low noise, high ripple rejection and low quiescent current. small packaging, 1.0 f small decoupling capacitor and built-in noise bypass capacitor less make the NJM2888 suitable for space conscious applications. features high ripple rejection 75db typ. (f=1khz, vo=3v version) low output noise voltage vno=45vrms typ. output capacitor with 1.0f ceramic capacitor (vo 2.7v) output current io(max.)=300ma high precision output vo 1.0% low dropout voltage 0.10v typ. (io=100ma) on/off control internal thermal overload protection internal short circuit current limit bipolar technology package outline sot-23-5 pin configuration equivalent circuit v out gnd v in thermal protection bandgap reference control 123 4 5 123 4 5 1. control (active high ) 2. gnd 3. n.c. 4. v out 5. v in NJM2888f
NJM2888 - 2 - ver.2007-02-23 output voltage rank list device name v out device name v out device name v out NJM2888f15 1.5v NJM2888f28 2.8v NJM2888f34 3.4v NJM2888f18 1.8v NJM2888f29 2.9v NJM2888f35 3.5v NJM2888f19 1.9v NJM2888f03 3.0v NJM2888f46 4.7v NJM2888f21 2.1v NJM2888f32 3.2v NJM2888f48 4.8v NJM2888f25 2.5v NJM2888f33 3.3v NJM2888f05 5.0v output voltage options available : 1.5 ~ 5.0v (0.1v step) absolute maximum ratings (ta=25 c) (*1): mounted on glass epoxy board based on eia/jedec. (114.3x76.2x1.6mm: 2layers) (*2): device itself. operating voltage v in =+2.3 +6v (in case of vo<2.1v version) electrical characteristics (v in =vo+1v, c in =0.1f, co=1.0f: vo 2.7v (co=2.2f : 1.8v3v version), io=30ma ? ? 0.10 %/v load regulation ? vo/ ? io io=0 300ma ? ? 0.009 %/ma dropout voltage(*3) ? v i-o io=100ma ? 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 no 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 (*3): the output voltage excludes under 2.1v. 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. parameter symbol ratings unit input voltage v in +10 v control voltage v cont +10 v 350(*1) power dissipation p d sot-23-5 200(*2) mw operating temperature topr -40 +85 c storage temperature tstg -40 +125 c
NJM2888 - 3 - ver.2007-02-23 test circuit NJM2888 v in v in v out control gnd 0.1f i in i cont v cont *4 1.0f (ceramic) i out v out v v a a *4 : 1.8NJM2888 v in v out control gnd 0.1f *5 1.0f v out v in r ( 0~300k ? ) *5 : 1.8 NJM2888 - 4 - ver.2007-02-23 2 in use of on/off control: NJM2888 v in v out control gnd 0.1f *5 1.0f v out v in r *5 : 1.8 NJM2888 - 5 - ver.2007-02-23 power dissipation vs. ambient temperature NJM2888f 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) device itself
NJM2888 - 6 - ver.2007-02-23 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) NJM2888_3.0v output voltage vs. input voltage @:ta=25 o c co =1 .0 f(ceramic) io =0 ma io=30ma io=100ma 0 1 2 3 4 0 100 200 300 400 500 600 700 0 1 2 3 4 @:ta=25 o c v in =4.0v co=1.0 f( ceramic) output current : io(ma) NJM2888_3.0v output voltage vs. output current output voltage : vo(v) 0 5 10 15 20 0 100 200 300 400 500 ground pin current : i gn d (ma) NJM2888_3.0v ground pin current vs. output current @:ta=25 o c v in =4.0v co=1.0 (ceramic) output current : i o (ma) 0 0.05 0.1 0.15 0.2 0.25 0.3 0 100 200 300 400 500 output current: io(m a) @:ta=25 o c co =1.0 f(ceramic) dropout voltage:dv i-o (v) NJM2888_3.0v dropout voltage vs. output current 0 10 20 30 40 50 60 01234 control current : i cont ( a) control voltage : v cont (v) NJM2888_3.0v control current vs. control voltage @:ta=25 o c v in =4 .0v co=1 .0 f(ceramic) io =3 0ma rc=0 ? rc=100k ? rc=50k ? 0 0.5 1 1.5 2 2.5 3 3.5 4 00.511.522.5 output voltage : vo(v) control voltage : v cont (v) NJM2888_3.0v output voltage vs. control voltage @:ta=25 o c v in =4 .0v co =1 .0 f(ceramic) io =3 0ma rc=0 ? rc=100k ? rc=50k ?
NJM2888 -7- ver.2007-02-23 typical characteristics -60 -50 -40 -30 -20 -10 0 0 100 200 300 400 500 load regulation : dvo-io(mv) output current : io(m a) NJM2888_3.0v load regulation vs. output current @:ta=25 o c v in =4.0v co=1.0 mf( ceramic) 0 200 400 600 800 1000 45678910 peak output current : io max (ma) NJM2888_3.0v peak output current vs. i nput voltage input voltage : v in (v) @:ta=25 o c co=1.0 f( ceramic) 0 50 0 1000 1500 2000 2500 3000 0246810 quiescent current : i q ( a) NJM2888_3.0v quiescent current vs. input voltage @:ta=25 o c output is open. co=1.0 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(a) output noise voltage : vn(uvrms) NJM2888_3.0v output noise voltage vs. output current @:ta=25 o c v in =4 .0v lpf:80khz co=1 .0 f(ceramic) 1u 1 10m 1m 100 10 50 0m 100m 20 30 40 50 60 70 80 90 100 10 100 1000 10 4 10 5 ripple rejection ratio: rr (db) frequency : f (hz) @:ta=25 o c v in =4.0v e in =200mvrms co=1.0 f( ce ra mic) 10 100 1k 10k 100k NJM2888_3.0v ripple rejection ratio vs. frequency io=0a io=10ma io=30ma io=300ma io=100ma 20 30 40 50 60 70 80 90 100 NJM2888_3.0v ripple rejection ratio vs. output current ripple rejection ratio: rr (db) 1 10m 1m 100 10 500m 100m @:ta=25 o c v in =4.0v e in =200mvrms co=1.0 f( ceramic) output current : io(a) 10khz 1khz
NJM2888 - 8 - ver.2007-02-23 typical characteristics 0.1 1 10 10 0 0.001 0.01 0.1 1 10 100 output current : io(a) @:ta=25 o c co=1.0 f( cera mic) NJM2888_3.0v equivalent serise resistance vs. output current stable region equivalent serise resistance : esr ( ? ) ? ) ? ) ? ) 1u 10u 100u 1m 10m 100m 500m 0.02 0 0.05 0.1 0.15 0.2 0.25 0.3 -50 0 50 100 150 dropout voltage : dv i-o (v) NJM2888_3.0v dropout voltage vs. temperature @:io=100ma co=1.0 f(ce ra mic) temperature : ta ( o c) 0 0.5 1 1.5 2 -50 0 50 100 150 control voltage :vcont-off [v] NJM2888_3.0v control voltage vs. tem perature @:v in =4 .0v io=30ma co=1.0 f(ceramic) temperature : ta ( o c) 2.9 2.95 3 3.05 3.1 -50 0 50 100 150 output voltage : vo(v) NJM2888_3.0v output voltage vs. tem perature @:v in =4 .0v io=30ma co=1.0 f(ceramic) temperature : ta ( o c) 0 200 400 600 800 1000 -50 0 50 100 150 output peak current : io_peak (ma) NJM2888_3.0v output peak current vs. temperature @:v in =4.0v co =1.0 f(ceramic) temperature : ta ( o c)
NJM2888 - 9 - ver.2007-02-23 typical characteristics 0 50 100 150 200 250 300 -50 0 50 100 150 quiescent current : i q ( a) NJM2888_3.0v quiescent current vs. temperature @:v in =4v output is open. co=1 f temperature : ta ( o c) -0.2 -0.15 -0.1 -0.05 0 0.05 0.1 0.15 0.2 -50 0 50 100 150 line regulation : dvo/dio(%/v) NJM2888_3.0v line regulation vs. temperature @:v in =4.0-9.0v io=30ma co=1.0 f(ceramic) temperature : ta ( o c) 0 0.005 0.0 1 0.015 0.0 2 0.025 0.0 3 -50 0 50 100 150 load regulation : dvo/dio(%/ma) NJM2888_3.0v load regulation vs. tem perature @:v in =4.0v io =0 -3 00 ma co =1 .0 f(ceramic) temperature : ta ( o c) 0 0.5 1 1.5 2 2.5 3 3.5 4 -50 0 50 100 150 200 output voltage : vo(v) NJM2888_3.0v output voltage vs. tem perature @:v in =4 .0v io=3 0ma co=1.0 f(ceramic) temperature : ta ( o c) 0 50 100 150 200 -50 0 50 100 150 short circuit current : isc (ma) NJM2888_3.0v short circuit current v.s. t em perature @: v in =4.0v co =1 .0 f (ceramic) output is short to ground. temperature : ta ( o c)
NJM2888 -1 0 - ver.2007-02-23 typical characteristics -1 0 1 2 3 4 5 6 7 -30 -25 -20 -15 -10 -5 0 5 10 0 4 8 121620 NJM2888_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=1.0 f(ceramic) io=30ma -1 0 1 2 3 4 5 6 7 -30 -25 -20 -15 -10 -5 0 5 10 012345 NJM2888_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=1.0 f(ceramic) io=30ma 2.94 2.96 2.98 3 3.02 3.04 3.06 3.08 3. 1 -400 -300 -200 -100 0 100 200 300 400 0 40 80 120 160 200 njm 2888_3.0v load transient response output voltage : vo [v] time : t [ s] output current output voltage @:ta=25 o c v in =4.0v co=1.0 f(ceramic) output current : io [ma] 2.94 2.96 2.98 3 3.02 3.04 3.06 3.08 3.1 -2 -1 0 1 2 3 4 5 6 0285684112140 NJM2888_3.0v line transient response output voltage : vo [ v] time : t [ s ] input voltage output voltage @:ta=25 o c v in =4.0v co=1.0 f( ceramic) lo=30ma input voltage : v in [v] [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.
|
