nju7790 -1- ver.2007-07-19 low dropout voltage regulator general description package outline the nju7790 is a 500ma output low dropout voltage regulator with on/off control. advanced cmos technology achieves high ripple rejection and low quiescent current. small packaging and 2.2 f small decoupling capacitor make the nju7790 suitable for space conscious applications. features high ripple rejection 65db typ. (f=400hz, vo=3.0v version) low quiescent current iq=30 a typ.(io=0ma) output current io(max.)=500ma high precision output vo 1.0% output capacitor with 2.2 f ceramic capacitor (vo 2.1v version) low dropout voltage 0.14v typ. (io=300ma, vo=3.0v version) on/off control internal thermal overload protection internal over current protection cmos technology package outline sot-89-5 pin configuration equivalent circuit v in gnd v out thermal protection v ref output control current limit control nju7790u1 123 4 52 1. control 2. gnd 3. n.c. 4. v out 5. v in nju7790u1
nju7790 - 2 - ver.2007-07-19 output voltage rank list device name v out nju7790u1-15 1.5v nju7790u1-21 2.1v nju7790u1-03 3.0v nju7790u1-33 3.3v NJU7790U1-05 5.0v absolute maximum ratings (ta=25 c) parameter symbol ratings unit input voltage v in +9 v control voltage v cont +9(*1) v power dissipation p d 350(*2) mw operating temperature topr -40 +85 c storage temperature tstg -40 +125 c (*1) : when input voltage is less than +10v, the absolute maximum control voltage is equal to the input voltage. (*2) : device itself. operating voltage v in =+2.3 +8v (in case of vo<2.1v version) electrical characteristics (v in =vo+1v, c in =1.0 f, co=2.2 f(co=4.7 f: vo 2.0v), ta=25 c) parameter symbol test condition min. typ. max. unit output voltage vo io=30ma -1.0% ? +1.0% v input voltage v in ? ? 8 v quiescent current i q io=0ma, v cont =v in , include i cont ? 30 60 a quiescent current at control off i q(off) v cont =0v ? 0.1 1.0 a output current io vo - 0.1v(vo 2.0v version) vo - 0.3v(vo 2.1v version) 500 ? ? ma short current limit i lim vo=0v ? 180 ? ma line regulation ? vo/ ? v in v in =vo+1v vo+6.0v (vo<2v version) v in =vo+1v 8.0v (vo 2v version), io=30ma ? ? 0.15 %/v load regulation ? vo/ ? io io=0 500ma ? ? 0.005 %/ma 2.1v vo<2.5v ? 0.17 0.22 v 2.5v vo<2.9v ? 0.15 0.19 v 2.9v vo<3.5v ? 0.14 0.18 v dropout voltage(*3) ? v i-o io=300ma 3.5v vo 5.0v ? 0.12 0.16 v ripple rejection rr ein=200mvrms,f=400hz,io=10ma, vo=3v version ? 65 ? db average temperature coefficient of output voltage ? vo/ ? ta ta = 0 +85 c, io=10ma ? 100 ? ppm/ c output noise voltage v no f=10hz 80khz, io=10ma, vo=3vversion ? 75 ? vrms pull-down resistance r cont 2 5 10 m ? control voltage for on-state v cont(on) 1.6 ? ? v control voltage for off-state v cont(off) ? ? 0.3 v (*3): except output voltage less than 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.
nju7790 - 3 - ver.2007-07-19 test circuit nju7790 v in v in v out control gnd 1.0 f i in i cont v cont i out v out v v a a *4 vo 2.0v version: co=4.7 f(ceramic) (ceramic) 2.2 f *4 typical application 1 in case that on/off control is not required: nju7790 v in v out control gnd 1.0 f v out v in 2.2 f *5 *5: vo 2.0v version: co=4.7 f connect control terminal to v in terminal.
nju7790 - 4 - ver.2007-07-19 2 in use of on/off control nju7790 v in v out control gnd 1.0 f v out v in 2.2 f *5 *5: vo 2.0v version: co=4.7 f state of control terminal: ?h? output is enabled. ?l? or ?open? output is disabled. input capacitance c in input capacitance c in is required to prevent oscillation and reduce power supply ripple for applications with high power supply impedance or a long power supply line. use the c in value of 1.0 f greater to avoid the problem. c in should connect between gnd and v in as short as possible.
nju7790 - 5 - ver.2007-07-19 typical characteristics dc 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) nju7790_3.0v output voltage vs. input voltage @:ta=25 o c co=2.2 f (cer ami c) c in =1.0 f io=0a io=30ma io=100ma 0 0.5 1 1.5 2 2.5 3 3.5 0 200 400 600 800 1000 1200 output voltage : vo(v) nju7790_3.0v output voltage vs. output current @:ta=25 o c v in =4.0v co=2.2 f (cer amic) c in =1.0 f output current : io(ma) 0 50 100 150 200 0 100 200 300 400 500 600 700 800 ground pin current : i gnd (ua) nju7790_3.0v ground pin current v.s. output current @:ta=25 o c v in =4.0v co=2.2 f (cer ami c) c in =1.0 f output current : i o (ma) 0 0.2 0.4 0.6 0.8 1 0 100 200 300 400 500 600 700 800 output current:io(ma) @: ta =2 5 o c co =2.2 f (ceramic) c in =1.0 f dropout voltage:dv i-o (v) nju7790_3.0v dropout voltage vs. output current 0 0.5 1 1.5 2 2.5 3 3.5 0 0.5 1 1.5 2 2.5 3 3.5 output voltage : vo(v) control voltage : vcont(v) nju7790_3.0v output voltage vs. control voltage @:ta=25 o c v in =4.0v co=2.2 f (cer ami c) io=30ma c in =1.0 f -20 -15 -10 -5 0 0 200 400 600 800 load regulation : dvo-lo(mv) output current : lo(ma) nju7790_3.0v load regulation vs. output current @:ta=25 o c v in =4.0v co=2.2 f ( cer amic) c in =1.0 f
nju7790 - 6 - ver.2007-07-19 typical characteristics dc characteristics 0 20 0 40 0 60 0 80 0 1000 1200 345678 output current : lo(ma) input voltage : v in (v) nju7790_3.0v output current vs. input voltage @:ta=25 o c co =2.2 f(ceramic) c in =1.0 f 0 10 20 30 40 50 0246810 quiescent current : iq( a) input voltage : v in (v) nju7790_3.0v quiescent current vs. input voltage @:ta=25 o c output is open co=2.2 f(ce ramic ) including i cont c in =1.0 f ac characteristics 0 50 100 150 200 0.001 0.01 0.1 1 10 100 1000 output current : io(ma) output noise voltage : vn( vrms) nju7790_3.0v output noise voltage vs. output current @:ta=25 o c v in =4.0v lpf:80khz c in =1.0 f co =2.2 f(ceramic) 0 20 40 60 80 100 0.01 0.1 1 10 100 1000 frequency( kh z) ripple rejection ratio : rr (db) nju7790_3.0v ripple rejection ratio vs. frequency lo=0a lo=30ma @:ta=25 o c v in =4.0v ein=200mvrms c in =1.0 f co =2.2 f ( ceramic ) lo=10ma 0 20 40 60 80 100 output current : io(ma) ripple rejection ratio : rr (db) nju7790_3.0v ripple rejection ratio vs. output current f=1khz f=10khz @:ta=25 o c v in =4.0v ein=200mvrms co =2.2 f ( ceramic ) c in =1.0 f ? ? ? ? ? ? ? ? ? ? 0.1 1 10 100 0.02 output current : io(ma) @:ta=25 o c v in =4.0v co =2.2 f(ceramic) c in =1.0 f equivalent serise resistance : esr( ? ? ? ? ) nju7790_3.0v equivalent serise resistance vs. output current stable region ? ? ? ? ? ? ? ? ? ?
nju7790 -7- ver.2007-07-19 typical characteristics temperature characteristics 2.9 2.95 3 3.05 3.1 -50 0 50 100 150 temperature : ta ( o c) @:v in =4.0v lo=30ma co=2.2 f (ceramic) c in =1.0 f nju7790_3.0v output voltage v.s. temperature output voltage: (v) 0 0.5 1 1.5 2 2.5 3 3.5 4 -50 0 50 100 150 200 output voltage : (v) temperat ure : ta ( o c) nju7790_3.0v output voltage v.s. temperature @:v in =4.0v io=30ma co=2.2 f(ceramic) c in =1.0 f -0.1 -0.05 0 0.05 0.1 -50 0 50 100 150 line regulation(%/v) temperat ure : ta ( o c) nju7790_3.0v line regulation v.s. temperature @:v in =4.0-8.0v lo=30ma co=2.2 f(ceramic) c in =1.0 f 0 0.0 01 0.0 02 0.0 03 0.0 04 0.0 05 -50 0 50 100 150 load regulation(%/ma) temperature ta ( o c) nju7790_3.0v load regulation v.s. temperature @:v in =4.0v io=0-500ma co=2.2 f (ceramic) c in =1.0 f 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 -50 0 50 100 150 dropout voltage(v) temperat ure : ta ( o c) nju7790_3.0v dropout voltage v.s. temperature @:v in =4.0 io=300ma co=2.2 f(ceramic) c in =1.0 f 0 2 4 6 8 10 -50 0 50 100 150 pull down resistance(m ?) ?) ?) ?) temperature ta ( o c) nju7790_3.0v pull down resistance v.s. temperature @:v in =6.0v i cont =5ma co=2.2 f(ce ramic ) c in =1.0 f
nju7790 - 8 - ver.2007-07-19 typical characteristics temperature characteristics 0 0.5 1 1.5 2 -50 0 50 100 150 control on voltage(v) temperat ure : ta ( o c) nju7790_3.0v control on voltage vs temperature @:v in =4.0v output is open co=2.2 f(ceramic) c in =1.0 f 0 0.5 1 1.5 2 -50 0 50 100 150 control off voltage vo (v) temperat ure ta ( o c) nju7790_3.0v control off volt age vs temperat ure @:v in =4.0v output is open co=2.2 f (ceramic) c in =1.0 f
nju7790 - 9 - ver.2007-07-19 typical characteristics transient response -1 0 1 2 3 4 5 6 7 -30 -25 -20 -15 -10 -5 0 5 10 012345 nju7790_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=2.2mf(ceramic) r l =100 ? -1 0 1 2 3 4 5 6 7 -30 -25 -20 -15 -10 -5 0 5 10 0 100 200 300 400 500 nju7790_3.0v on/off transient response output volt age : vo [ v] control voltage : vo [v] time : t [ms] control voltage output voltage @:ta=25 o c v in =4.0v co=2.2mf(ceramic) r l =100 ? 2.7 2.8 2.9 3 3.1 3.2 3.3 3.4 3.5 -2 -1 0 1 2 3 4 5 6 04080120160200 nju7790_3.0v line transient response out put volt age : vo [ v] time : t [ s] input voltage output voltage @:ta=25 o c v in =4.0-5.0v co=2.2 f(ceramic) io=30ma input voltage : v in [v] 2.6 2.7 2.8 2.9 3 3.1 3.2 3.3 3.4 -200 -100 0 100 200 300 400 500 600 0 40 80 120 160 200 nju7790_3.0v load transient response output voltage : vo [v] time : t [ s] output current outp ut voltage @:ta=25 o c v in =4.0v co=2.2 f(ceramic) io=400-500ma output current : io [ma] [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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