njm2881/82 -1- ver.2006-02-22 low dropout voltage regulator general description package outline njm2881/82 is a low dropout voltage regulator with on/off control. advanced bipolar technology achieves low noise, high ripple rejection and low quiescent current. it is mounted on sot-23-5 as small package and 1.0 f ceramic capacitor is available. therefore it is suitable for cellular phone, camcorder, ic decoder, camera, and other portable items. features high ripple rejection 75db typ. (f=1khz ,vo=3v version) low output noise voltage vno=30 vrms (cp=0.01 f) output capacitor with 1.0 f 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 (active high) internal short circuit current limit internal thermal overload protection bipolar technology package outline sot-23-5 pin configuration equivalent circuit v out thermal protection bandgap reference noise bypass v in control gnd 123 4 5 123 4 5 1. control (active high ) 2. gnd 3. noise bypass 4. v out 5. v in 1. v in 2. gnd 3. control (active high) 4. noise bypass 5. v ou t njm2881f 123 4 5 123 4 5 NJM2882f njm2881/82f
njm2881/82 - 2 - ver.2006-02-22 output voltage rank list device name v out device name v out device name v out njm288*f15 1.5v njm288*f29 2.9v njm288*f38 3.8v njm288*f17 1.7v njm288*f03 3.0v njm288*f04 4.0v njm288*f18 1.8v njm288*f31 3.1v njm288*f43 4.3v njm288*f21 2.1v njm288*f32 3.2v njm288*f47 4.7v njm288*f25 2.5v njm288*f33 3.3v njm288*f05 5.0v njm288*f28 2.8v njm288*f345 3.45v njm288*f285 2.85v njm288*f35 3.5v absolute maximum ratings (ta=25 c) (*1): when input voltage is less than +14v, the absolute maximum control voltage is equal to the input voltage. (*2): mounted on glass epoxy board based on eia/jedec. (114.3x76.2x1.6mm: 2layers) (*3): device itself. operating voltage v in =+2.3 +6v (in case of vo<2.1v) electrical characteristics (vo>2.0v version: v in =vo+1v, c in =0.1 f, c o = 1 . 0 f: vo 2.7v (co=2.2 f: vo 2.6v), cp=0.01 f, ta =25 c) parameter symbol test condition min. typ. max. unit output voltage vo io=30ma -1.0% - +1.0% v quiescent current i q io=0ma, except icont - 120 180 a quiescent current at control off i q(off) v cont =0v - - 100 na output current io vo-0.3v 300 400 - ma line regulation ? vo/ ? v in v in =vo+1v vo+6v, io=30ma - - 0.10 %/v load regulation ? vo/ ? io io=0 300ma - - 0.03 %/ma dropout voltage ? 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 - 30 - vrms control voltage for on-state v cont(on) 1.6 - - v control voltage for off-state v cont(off) - - 0.6 v parameter symbol ratings unit input voltage v in +14 v control voltage v cont +14(*1) v 350(*2) power dissipation p d sot-23-5 200(*3) mw operating temperature to p r -40 +85 c storage temperature ts t g -40 +125 c
njm2881/82 - 3 - ver.2006-02-22 electrical characteristics (vo 2.0v version: v in =vo+1v, c in =0.1 f, c o = 2 . 2 f: vo 1.9v (co=4.7 f: vo 1.8v), cp=0.01 f, ta =25 c) parameter symbol test condition min. typ. max. unit output voltage vo io=30ma -1.0% - +1.0% v quiescent current i q io=0ma, except i cont - 120 180 a quiescent current at control off i q(off) v cont =0v - - 100 na output current io vo-0.3v 300 400 - ma line regulation ? vo/ ? v in v in =vo+1v vo+6v, io=30ma - - 0.10 %/v load regulation ? vo/ ? io io=0 300ma - - 0.03 %/ma ripple rejection rr ein=200mvrms,f=1khz,io=10ma, vo=1.8v version - 80 - 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=1.8v version - 20 - vrms control voltage for on-state v cont(on) 1.6 - - v control voltage for off-state v cont(off) - - 0.6 v 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 njm2881/82 v in v in v out control gnd 0.1 f i in i cont v con t cp=0.01 f i out v out v v a a 1.0 f *4 (ceramic) *4 1.9v vo 2.6v version: co=2.2 f(ceramic) vo 1.8v version: co=4.7 f(ceramic) noise bypass
njm2881/82 - 4 - ver.2006-02-22 typical application 1 in the case where on/off control is not required: connect control terminal to v in terminal 2 in use of on/off control: 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 0.01f greater to avoid the problem. in the case of using a resistance "r" between v in and control. the current flow into the control terminal while the ic is on state (i cont ) can be reduced when a pull up resistance "r" is inserted between v in and the control terminal. the minimum control voltage for on state (v cont (on) ) is increased due to the voltage drop caused by i cont and the resistance "r". the i cont is temperature dependence as shown in the "control current vs. temperature" characteristics. therefore, the resistance "r" should be carefully selected to ensure the control voltage exceeds the v cont (on) over the required temperature range. njm2881/82 v in v out control noise bypass gnd 0.1 f cp=0.01 f v out v in r 1.0 f *5 *5 1.9v vo 2.6v version: co=2.2 f vo 1.8v version: co=4.7 f njm2881/82 v in v out control gnd 0.1 f cp=0.01 f v out v in 1.0 f *5 *5 1.9v vo 2.6v version: co=2.2 f vo 1.8v version: co=4.7 f r (0 300k ? ) noise bypass
njm2881/82 - 5 - ver.2006-02-22 power dissipation vs. ambient temperature njm2881/82f power dissipation (topr=-40 +85 ,tj=125 ,p d =200mw(ta Q 25 )) 0 100 200 300 400 500 -50 -25 0 25 50 75 100 ambient temperature ta( ) power dissipation p d (mw) device itself on board(114.376.21.6mm, fr-4)
njm2881/82 - 6 - ver.2006-02-22 electrical characteristics 2.6 2.8 3 3.2 3.4 2.6 2.8 3 3.2 3.4 input voltage :vin [v] @:ta=25 o c co=1.0 f(ce ramic) cp=0.01 f output voltage :vo [v] njm2881/82_3.0v output voltage v.s. input voltage io=0a io=100ma io=300ma 0 0.5 1 1.5 2 2.5 3 3.5 0 100 200 300 400 500 600 njm 2881/82_3.0v output voltage vs. output current output voltage :vo [v] output current :io [ma] @:ta=25 o c co =1.0 f(ceramic) cp=0.01 f 0 5 10 15 20 0 100 200 300 400 500 ground pin current :i gnd [ma] output current :io [ma] njm2881/82_3.0v ground pin current vs. output voltage @:ta=25 o c co=1.0 f(ce ramic) cp=0.01 f 0 0.05 0.1 0.15 0.2 0.25 0.3 0 100 200 300 400 500 output current :io [ma] @:ta=25 o c co=1.0 f(ceramic ) cp=0.01 f dropout voltage :dvi-o [v] njm2881/82_3.0v dropout voltage vs. output current 0 5 10 15 20 0 0.5 1 1.5 2 2.5 3 control voltage :v cont [v] @:ta=25 o c co=1.0 f(cerami c) cp=0.01 f io=30ma control current :i cont [ a] njm2881/82_3.0v control current v.s. control voltage rc=0 ? rc=50k ? rc=100k ? 0 0.5 1 1.5 2 2.5 3 3.5 4 00.511.522.53 control voltage :v cont [v] @:ta=25 o c vin=4.0v co=1.0 f(ce rami c) cp=0.01 f io=30ma output voltage :vo [v] njm2881/82_3.0v output voltage v.s. control voltage rc=0 ? rc=50k ? rc=100k ?
njm2881/82 -7- ver.2006-02-22 electrical characteristics -60 -50 -40 -30 -20 -10 0 0 100 200 300 400 500 load regulation :dvo/dio [mv] output current :io [ma] njm2881/82_3.0v load regulation vs. output current @:ta=25 o c vin=4v co=1.0 f(ceramic) cp=0.01 f 0 200 400 600 800 1000 4 6 8 101214 peak output current :io max [ma] input voltage :vin [v] njm2881/82_3.0v peak output current vs. input voltage @:ta=25 o c co=1.0 f(ce rami c) cp=0.01 f 0 400 800 1200 1600 2000 051015 quiescent current : iq [ a] njm 2881/82_3.0v quiescent current v.s. input voltage @:ta=25 o c output is open. co=1.0 f(ce ramic) cp=0.01 f including icont input voltage :vin [v] 0 50 100 150 200 0.000001 0.00001 0.0001 0.001 0.01 0.1 noise bypass capacitor : cp( f) output noise voltage : vn ( vrms) njm 2881/82_3.0v output noise voltage vs. noise bypass capacitor @:ta=25 o c v in =4v co =1.0 f (ceramic) io=10ma 0 20 40 60 80 100 0.001 0.01 0.1 1 10 100 output current :io [ma] output noise voltage :vn [ vrms] njm 2881/82_3.0v output noise voltage vs. output current @:ta=25 o c v in =4v co=1.0 f(ceramic) cp=0.01 f 0 20 40 60 80 100 10 100 1000 10 4 10 5 ripple rejection ratio :rr [db] njm2881/82_3.0v ripple rejection ratio v.s. frequency frequency : f [hz] io=0ma io=10ma io=30ma @:ta=25 o c v in =4.0v ein=200mvrms co =1.0 f(ceramic) cp=0.01 f 100k 10k 1k 100 10
njm2881/82 - 8 - ver.2006-02-22 electrical characteristics 0 20 40 60 80 100 0.001 0.01 0.1 1 10 100 1000 output current : io(ma) ripple rejection : rr (db) njm2881/82_3.0v ripple rejection vs. output current f=1khz f=10khz @:ta=25 o c vin=4.0v ein=200mvrms co =1.0 f(ceramic) cp=0.01 f 0. 1 1 10 100 0.001 0.01 0.1 1 10 100 1000 output current :io [ma] @:ta=25 o c v in =4v co=1.0 f(ce ramic) cp=0.01 f equivalent series resistance :esr [ ? ? ? ? ] njm 2881/82_3.0v equivalent seri es resi st ance vs. output current stable region 0.02 0 0.05 0.1 0.15 0.2 0.25 0.3 -50 0 50 100 150 ?f [?^ 1 njm2881/82_3.0v dropout voltage v.s. temperature dropout voltage : vi-o [v] temperature :ta [ o c] @:io=100ma co=1.0 f(ceramic) cp=0.01 f 2.9 2.95 3 3.05 3.1 -50 0 50 100 150 output voltage :vo [v] njm 2881/82_3.0v output voltage v.s. temperature @:v in =4v io=30ma co=1.0 f(ce ramic) cp=0.01 f temperat ure :ta [ o c] 0 0.5 1 1.5 2 -50 0 50 100 150 control voltage :vcont-off [v] njm2881/82_3.0v control voltage v.s. temperature @:v in =4v output is open. co=1.0 f(ceramic) cp=0.01 f temperature :ta [ o c] 0 2 4 6 8 10 -50 0 50 100 150 control current : i cont ( a) temperat ure ta ( o c) njm 2881/82_3.0v control current v.s. temperature @:v in =4 v output is open. co=1.0 f(ceramic) cp=0.01 f v cont =1.6v
njm2881/82 - 9 - ver.2006-02-22 electrical characteristics 0 50 100 150 200 250 300 -50 0 50 100 150 quiescent current : iq [ a] njm 2881/82_3.0v quiescent current v.s. temperat ure @:v in =4v output is open co =1.0 f(ceramic) cp=0.01 f include icont temperat ure :ta [ o c] 0 50 100 150 200 -50 0 50 100 150 short circuit current :isc [ma] njm 2881/82_3.0v short circuit current v.s. temperature @:v in =4.0v output is short to ground. co=1.0 f(ce rami c) cp=0.01 f temperat ure :ta [ o c] -0.2 -0.1 0 0.1 0.2 -50 0 50 100 150 line regula tion : dvo/dvin [%/v] njm 2881/82_3.0v line regulation v.s. temperature @:v in =4.0-9.0v io=30ma co=1.0 f(ce rami c) cp=0.01 f temperat ure :ta [ o c] 0 0.005 0.01 0.015 0.02 0.025 0.03 -50 0 50 100 150 load re gulat ion :dvo/dio [%/ma] njm 2881/82_3.0v load regulation v.s. temperature @:v in =4.0v io=0-100ma co=1.0 f(ce rami c) cp=0.01 f temperat ure : 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] njm 2881/82_3.0v output voltage v.s. temperature @:v in =4.0v io=30ma co=1.0 f(ceramic) cp=0.01 f temperat ure :ta [ o c]
njm2881/82 - 1 0 - ver.2006-02-22 electrical characteristics 0 2 4 6 8 10 12 -20 -15 -10 -5 0 5 10 15 20 012345 njm2881_3.0v on/off transient response without load output voltage : vo [v] control voltage : vo [v] time : t [s] contr ol voltage output voltage @:ta=25 o c v dd =4.0v co=1 .0 f(ceramic) cp=0 .0 1 f io=0ma 0 2 4 6 8 10 12 -20 -15 -10 -5 0 5 10 15 20 0 4 8 121620 njm 2881_3.0v on/off transi ent response output voltage : vo [v] contr ol v oltage : v o [v] time : t [ ms] control voltage output voltage @:ta=25 o c v dd =4.0v co=1.0 f(cerami c) cp=0.01 f io=30ma 2.96 2.98 3 3.02 3.04 3.06 3.08 3.1 3.12 0 50 100 150 200 250 300 350 400 0 40 80 120 160 200 njm2881/82_3.0v load transi ent response output voltage : vo [v] time : t [ s] output current output voltage @:ta=25 o c v dd =4.0v co=1.0 f(ce rami c) cp=0.01 f output current : io [ma] 2.96 2.98 3 3.02 3.04 3.06 3.08 3.1 3.12 -4 -2 0 2 4 6 8 10 0 40 80 120 160 200 njm 2881/82_3.0v input transient response output voltage : vo [v] time : t [ s] input voltage output voltage @:ta=25 o c v dd =4.0v co=1.0 f(ce rami c) cp=0.01 f io=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.
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