njm2871b/72b -1- ver.2006-02-20 njm2871bf/72bf low dropout voltage regulator general description package outline the njm2871b/72b are low dropout voltage regulator designed for cellular phone applications. advanced bipolar technology achieves low noise, high ripple rejection and low quiescent current. features high ripple rejection 75db typ. (f=1khz vo=3v version) output noise voltage vno=30 vrms typ. (cp=0.01 f) output capacitor with 1.0uf 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) input voltage range +2.3 +14v(vo 2.0v version) on/off control (active high) internal short circuit current limit internal thermal overload protection bipolar technology package outline sot-23-5 (mtp5) 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 njm2871bf 123 4 5 123 4 5 NJM2872Bf
njm2871b/72b - 2 - ver.2006-02-20 output voltage rank list device name v out device name v out device name v out njm287*bf15 1.5v njm287*bf26 2.6v njm287*bf34 3.4v njm287*bf18 1.8v njm287*bf27 2.7v njm287*bf35 3.5v njm287*bf19 1.9v njm287*bf28 2.8v njm287*bf38 3.8v njm287*bf02 2.0v njm287*bf29 2.9v njm287*bf04 4.0v njm287*bf21 2.1v njm287*bf03 3.0v njm287*bf48 4.8v njm287*bf23 2.3v njm287*bf31 3.1v njm287*bf05 5.0v njm287*bf24 2.4v njm287*bf32 3.2v njm287*bf25 2.5v njm287*bf33 3.3v absolute maximum ratings (ta=25 c) 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 topr ? 40 +85 c storage temperature tstg ? 40 +125 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 +14v (in case of vo<2.1v version) electrical characteristics (v in =vo+1v, c in =0.1 f, co=1.0 f: vo 2.7v (co=2.2 f : 1.8v njm2871b/72b - 3 - ver.2006-02-20 test circuit njm287*b v in v in v out control noise bypass gnd 0.1 f i in i cont v cont cp=0.01 f i out v out v v a a 1.0 f *5 *5 1.8v njm2871b/72b - 4 - ver.2006-02-20 typical application 1 in the case where on/off control is not required: njm287*b v in v out control noise bypass gnd 0.1 f cp=0.01 f v out v in r (0 300k ? ) 1.0 f *6 *6 1.8v njm2871b/72b - 5 - ver.2006-02-20 power dissipation vs. ambient temperature njm2871b/72bf 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)
njm2871b/72b - 6 - ver.2006-02-20 electrical 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 input voltage :vin [v] @:ta=25 o c co=1.0 f(cerami c) cp=0.01 f output voltage :vo [v] njm2871b_3v output voltage v.s. input vol tage io=0a io=30ma io=100ma 0 0.5 1 1.5 2 2.5 3 3.5 4 0 50 100 150 200 250 300 njm2871b_3v output voltage vs. output current output voltage :vo [v] output current :io [ma] @:ta=25 o c v in =4v co =1.0 f(ceramic) cp=0.01 f 0 5 10 15 20 0 50 100 150 200 ground pin current :i gnd [ ma] output current :io [ma] njm 2871b_3v ground pin current vs. output voltage @:ta=25 o c v in =4v co=1.0 f(ce ramic) cp=0.01 f 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=1.0 f(ceramic ) cp=0.01 f dropout voltage :dvi-o [v] njm2871b_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 control voltage :v cont [v] @:ta=25 o c v in =4.0v co=1.0 f(cerami c) cp=0.01 f io=30ma control current :i cont [ a] njm2871b_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 0 0.5 1 1.5 2 2.5 3 control voltage :v cont [v] @:ta=25 o c v in =4.0v co =1.0 f(ceramic) cp=0.01 f io=30ma output voltage :vo [v] njm2871b_3.0v output voltage v.s. control voltage rc=0 ? rc=50k ? rc=100k ?
njm2871b/72b -7- ver.2006-02-20 electrical characteristics -50 -40 -30 -20 -10 0 0 50 100 150 200 load regulation :dvo/dio [mv] output current :io [ma] njm2871b_3v load regulation vs. output current @:ta=25 o c v in =4v co=1.0 f(ceramic) cp=0.01 f 0 50 100 150 200 250 300 4 6 8 101214 peak output current :io max [ma] input voltage : v in [v] njm2871b_3v 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 : i q [ a] njm2871b_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 :v in [v] 0 50 100 150 200 250 300 10 -12 10 -11 10 -10 10 -9 10 -8 10 -7 100p 10p 1000p 0.01 0.1 noise bypass capacitor : cp(f) output noise voltage : vn ( vrms) njm 2871b_3.0v output noise voltage vs. noise bypass capacitor @:ta=25 o c v in =4v co=1 f (ceramic) io=10ma 1p 0 20 40 60 80 100 0.001 0.01 0.1 1 10 100 output current :io [ma] output noise voltage :vn [ vrms] njm2871b_3.0v output noise voltage vs. output current @:ta=25 o c v in =4v cp=0.01 f lp f:80khz co=1.0 f(ceramic) co=2.2 f(ceramic) 20 30 40 50 60 70 80 90 10 100 1000 10 4 10 5 ripple rejection ratio :rr [db] njm2871b_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 f(ceramic) cp=0.01 f 100k 10k 1k 100 10
njm2871b/72b - 8 - ver.2006-02-20 electrical characteristics 20 30 40 50 60 70 80 90 10 0 0.001 0.01 0.1 1 10 100 output current : io(ma) ripple rejection : rr (db) njm 2871b_3.0v ripple rejection vs. output current f=1khz f=10khz @:ta=25 o c v in =4.0v ein=200mvrms co =1.0 f(ceramic) 0.1 1 10 100 0.001 0.01 0.1 1 10 100 output current :io [ma] @:ta=25 o c v in =4v co =1.0 f(ceramic) cp=0.01 f equivalent series resistance :esr [ ? ? ? ? ] njm2871b_3.0v equival ent 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 dropout voltage :dvi-o [v] njm2871b_3.0v dropout voltage v.s. temperature @:io=60ma co=1.0 f(ce rami c) cp=0.01 f temperat ure :ta [ o c ] 2.9 2.95 3 3.05 3.1 -50 0 50 100 150 output voltage :vo [v] njm2871b_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] 0 0.5 1 1.5 2 -50 0 50 100 150 control voltage :vcont-off [v] njm2871b_3.0v control voltage v.s. temperature @:v in =4.0v output is open. co=1.0 f(ceramic) cp=0.01 f temperat ure :ta [ o c] 0 2 4 6 8 10 -50 0 50 100 150 control current : i cont ( a) temperat ure ta ( o c) njm2871b_3.0v control current v.s. temperature @:v in =4.0v output is open. co =1.0 f(ceramic) cp=0.0 1 f v cont =1 .6v
njm2871b/72b - 9 - ver.2006-02-20 electrical characteristics 0 50 100 150 200 250 300 -50 0 50 100 150 quiescent current : i q [ a] njm2871b_3.0v qui escent current v.s. temperat ure @:v in =4.0v output is open. co=1.0 f(ceramic) cp=0.01 f temperat ure :ta [ o c] 0 50 100 150 200 -50 0 50 100 150 short circuit current :isc [ma] njm2871b_3.0v short circuit current v.s. temperature @:vin=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] njm2871b_3.0v line regulation v.s. temperature @:vin=4.0-9.0v io=30ma co=1.0 f(ce ramic) 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 regulation :dvo/dio [%/ma] njm2871b_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] njm2871b_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]
njm2871b/72b - 1 0 - ver.2006-02-20 electrical characteristics -1 0 1 2 3 4 5 6 7 -25 -20 -15 -10 -5 0 5 10 15 012345 njm2871b_3.0v on/off transient response without load output voltage : vo [v] control voltage : v o [v] time : t [s] control voltage output voltage @:ta=25 o c v dd =4.0v co=1.0 f(ceramic) cp=0.01 f io=0ma -1 0 1 2 3 4 5 6 7 -25 -20 -15 -10 -5 0 5 10 15 048121620 njm2871b_3.0v on/off transient response output voltage : vo [v] control voltage : v o [v] time : t [ms] control voltage output voltage @:ta=25 o c v dd =4.0v co=1.0 f(ceramic) cp=0.01 f 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 04080120160200 njm2871b_3.0v load transient response output voltage : vo [v] time : t [ s] output current output vo ltage @:ta=25 o c v dd =4.0v co=1.0 f(ceramic) cp=0.01 f output current : io [ma] 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 njm2871b_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(ceramic) 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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