njm2839 1 2 3 4 6 5 8 7 positive/negative 2ch low dropout voltage regulator ? general description ? package outline the njm2839 is a positiv e/negative 2ch low dropout voltage regulator. advanced bipolar technology achieves low noise, high precision voltage and high ripple rejection. negative output ch has built in to soft-start and shunt sw functions. positive/negative dual output, 1.0 f output capacitor and small package can make njm2839 suitable for power supply for ccd of portable item. ? features z high ripple rejection 75db typ. (f=1khz,vo1=3v version) z low output noise voltage v no 1=45 vrms typ. z output capacitor with 1.0 f ceramic capacitor. (vo1 5.5v) z output current io1(max.)=100ma z high precision output vo11.5% z low drop out voltage 0.10v typ. (io1=60ma) z on/off control z internal thermal overload protection z internal short circuit current limit z high ripple rejection 65db typ. (f=1khz,vo2=-7v version) z low output noise voltage v no 2=100 vrms typ z output capacitor with 1.0 f ceramic capacitor. z output current io2(max.)=100ma z high precision output vo21.5% z low drop out voltage 0.13v typ. (io2=60ma) z on/off control (with output shunt sw) z soft-start function z internal thermal overload protection z internal short circuit current limit z bipolar technology z package outline vsp8 ? pin configuration njm2839rxxxx njm2839r 1.control1 2.v + 3.cs 4.control2 5.v ? 6.v out 2 7.gnd 8.v out 1
njm2839 ? output voltage rank list device name v out 1 v out 2 device name v out 1 v out 2 njm2839r1575 15v -7.5v njm2839r1265 12v -6.5v njm2839r1375 13v -7.5v njm2839r1208 12v -8.0v njm2839r1275 12v -7.5v NJM2839R1307 13v -7.0v njm2839r1263 12v -6.3v njm2839r1206 12v -6.0v njm2839r11606 11.6v -6.0v ? equivalent circuit v out 2 gnd v ? thermal protection bandgap reference control2 current limit output control cs current limit thermal protection bandgap reference output control control1 v out 1 v +
njm2839 ? absolute maximum ratings (ta=25c) parameter symbol ratings unit v + +20 v input voltage v - -14 v control voltage 1 v cont1 +20(*1) v control voltage 2 v cont2 +5 v power dissipation p d 380(*2) mw operating temperature topr -40~+85 c storage temperature tstg -40~+125 c output sink current at off-state t sink(off) 10 ma (*1): when positive input voltage is less than +20v, the absolute maximum control voltage is equal to the positive input voltage. (*2): mounted on glass epoxy board. (114.376.21.6mm : 2layer,fr-4) ? electrical characteristics positive output electrical characteristics (v + =vo1+1v, c in 1= 0.1f, co1= 1.0f(2.8v12v), io1=30ma ? ? 0.10 %/v load regulation 1 ? vo/ ? io1 io1=0~60ma ? ? 0.03 %/ma dropout voltage 1 ? v i?o 1 io1=60ma ? 0.10 0.18 v ripple rejection 1 rr1 ein=200mvrms, f=1khz, io1=10ma,vo1=3v version ? 75 ? db average temperature coefficient of output voltage 1 ? vo/ ? ta1 ta=0~85c, io1=10ma ? 50 ? ppm/c output noise voltage 1 v no 1 f=10hz~80khz, io1=10ma, vo1=3v version ? 45 ? vrms control current 1 i cont 1 v cont 1 =1.6v ? 3 12 a control voltage for on-state 1 v cont(on) 1 1.6 ? ? v control voltage for off-state 1 v cont(off) 1 ? ? 0.6 v input voltage 1 v + ? ? 18 v the above specification is a common specificati on for all output voltages. therefore, it may be different fr om the individual s pecification for a spec ific output voltage.
njm2839 negative output electr ical characteristics (v ? =vo2-1v, v cont 2 =3v , c in 2=0.1f , co2=1.0f, ta=25c) parameter symbol test condition min. typ. max. unit output voltage 2 vo2 io2=30ma +1.5% ? -1.5% v quiescent current 2 i q 2 io2=0ma, except i cont 2 ? 130 200 a quiescent current at off-state 2 i q(off) 2 v cont 2=0v ? ? 100 na output current 2 io2 v o 2+0.3v 100 130 ? ma line regulation 2 ? vo/ ? v ? v ? =vo2-1v~-12v, io2=30ma ? ? 0.10 %/v load regulation 2 ? vo/ ? io2 io2=0~60ma ? ? 0.03 %/ma dropout voltage 2 ? v i?o 2 io2=60ma ? 0.13 0.23 v ripple rejection 2 rr2 ein=200mvrms, f=1khz, io2=10ma, vo2=-7v version ? 65 ? db average temperature coefficient of output voltage 2 ? vo/ ? ta2 ta=0~85c, io2=10ma ? 50 ? ppm/c output noise voltage 2 v no 2 f=10hz~80khz, io2=10ma, vo2=-7v version ? 100 ? vrms cs terminal charge current ics v cs =0v 4 5 6 a output resistance at off-state r o(off) v cont 2 =0v, vo=-7v version ? 360 ? ? control current 2 i cont 2 v cont 2 =1.6v ? 2 4 a control voltage for on-state 2 v cont(on) 2 1.6 ? ? v control voltage for off-state 2 v cont(off) 2 ? ? 0.6 v input voltage 2 v ? -12 ? ? v the above specification is a common specificati on for all output voltages. therefore, it may be different fr om the individual s pecification for a spec ific output voltage.
njm2839 ? test circuit njm2839 v + v out 2 gnd 0.1 f i in + i cont 1 v cont 1 i out 1 v out 1 v 0.047 f cs v + v out 1 control1 a v ? a 0.1 f a v ? i in ? control2 v 1.0 f (*3) (ceramic) i out 2 v out 2 v 1.0 f i cont 2 v cont 2 v a (ceramic) (*3) 2.8v njm2839 ? typical application 1.in case a load is connected between v out 1 and gnd, gnd and v out 2, respectively. njm2839 v + v out 2 control1 gnd 0.1 f 0.047 f v out 2 v + r cs control1 cs control2 r control2 v ? 0.1 f 1.0 f (*4) 1.0 f v out 1 v ? v out 1 ro1 ro2 (*4) 2.8v njm2839 2. in case that a load is connected between v out 1 and v out 2 njm2839 v + v out 2 control1 gnd 0.1f 0.047f v out 2 v + r cs control1 cs control2 r control2 v ? 0.1f 1.0f (*4) 1.0f v out 1 v ? v out 1 ro (*4) 2.8v njm2839 njm2839 v + v out 2 control1 gnd 0.1f 0.047f v out 2 v + r cs control1 cs control2 r control2 v ? 0.1f 1.0f (*4) 1.0f v out 1 v ? v out 1 d1 d2 ro (*4) 2.8v 1 p x f s % j t t j q b u j p o 1 % n 8
device itself on board(114.376.21.6mm, fr-4)
njm2839 [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 ri g hts.
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