NJM2346 -1 - ver.2003-05-21 voltage and current control ic general description package outline features low quiescent current 250ua typ. precision amp. vio=0.5mv typ. operating voltage 2.2v to 13v precision voltage reference 1.24v1% pc pin sink current 20ma max. bipolar technology package outline dmp8, tvsp8 pin configuration absolute maximum ratings (ta=25c) parameter symbol maximum ratings unit supply voltage v + 14 v differential input voltage v id (ach) 14 (bch) 14 v common mode input voltage v ic (ach) -0.3 14 (note) (bch) -0.3 14 (note) v pc terminal current i pc 20 ma power dissipation p d (dmp 8) 300 (tvsp 8) 320 mw operating temperature range t opr -40 +85 c storage temperature range t stg -50 +150 c (note) when the supply voltage is less than 14v, the absolute maximum input voltage is equal to the supply voltage. the NJM2346 is a low power operation battery charger ic. it includes a voltage reference and two operational amplifiers fo r voltage and current control needed for a design of secondary circui t for battery chargers and switching regulators. low current consumption design contributes low standby powe r required for 1a class battery chargers. NJM2346m NJM2346rb1 1. pc 2. a -input 3. a +input 4. gnd 5. b +input 6. b -input 7. v ref 8. v + pin function v ref 1 2 3 4 5 6 7 8 a b
NJM2346 - 2 - ver.2003-05-21 recommended operating conditions (ta=25c) parameter symbol maximum ratings unit operating voltage vopr 2.2 13 v electrical characteristics (v + =5v,ta=25c) general characteristics parameter symbol test condition min. typ. max. unit operating current i cc i pc =off ? 250 350 ua leakage current i pcleak v + =v pc =13v ? ? 1 ua saturation voltage v pc(sat) i pc =20ma ? 0.1 0.3 v reference voltage v ref i ref =0ma 1227 1240 1253 mv reference voltage load regulation ? v ref / ? i ref i ref =0ma 1ma ? ? 10 mv [ach] parameter symbol test condition min. typ. max. unit input offset voltage v io ? 0.5 2 mv input offset current i io ? 10 50 na input bias current i b ? 40 160 na large signal voltage gain a v ? 80 ? db input common mode voltage range v icm -0.2 3.0 ? ? v common mode rejection ratio cmr ? 80 ? db supply voltage rejection ratio svr ? 80 ? db slew rate sr ? 0.5 ? v/ua gain bandwidth product gb f=10khz ? 1 ? mhz [bch] parameter symbol test condition min. typ. max. unit input offset voltage v io ? 0.5 2 mv input offset current i io ? 10 50 na input bias current i b ? 20 80 na large signal voltage gain a v ? 80 ? db input common mode voltage range v icm 0.5 4.0 ? ? v common mode rejection ratio cmr ? 80 ? db supply voltage rejection ratio svr ? 80 ? db slew rate sr ? 0.5 ? v/ua gain bandwidth product gb f=10khz ? 1 ? mhz
NJM2346 - 3 - ver.2003-05-21 typical applications control ic pc v ref =1.24v 1% battery pc NJM2346 1 2 3 4 6 7 5 8 ab r sc v i r1 r3 r2 r4 r5 r6
NJM2346 - 4 - ver.2003-05-21 typical characteristics operating current vs. operating voltage (i pc =off,ta=25c) 0 50 100 150 200 250 300 350 02468101214 operating voltage v + (v) operating current i cc (ua) saturation voltage vs. pc terminal current (v + =5v,ta=25c) 0 0.1 0.2 0.3 0 5 10 15 20 pc terminal current i pc (ma) saturation voltage v pc(sat) (v) reference voltage vs. 7pin output current (v + =5v,ta=25c) 0 0.2 0.4 0.6 0.8 1 1.2 1.4 0123 7pin output current i ref (ma) reference voltage v ref (v) ach voltage gain phase vs. frequency (v + =5v,ta=25c) 0 10 20 30 40 50 100 1k 10k 100k 1m 10m frequency f (hz) voltage gain a v (db) 0 45 90 135 180 225 phase (deg) gain phase reference voltage vs. operating voltage (i ref =0ma,ta=25c) 0 0.2 0.4 0.6 0.8 1 1.2 1.4 02468101214 operating voltage v + (v) reference voltage v ref (v) bch voltage gain phase vs. frequency (v + =5v,ta=25c) 0 10 20 30 40 50 100 1k 10k 100k 1m 10m frequency f (hz) voltage gain a v (db) 0 45 90 135 180 225 phase (deg) gain phase
NJM2346 - 5 - ver.2003-05-21 typical characteristics [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. operating current vs. temperature (v + =5v,i pc =off) 0 50 100 150 200 250 300 350 -50 -25 0 25 50 75 100 125 150 temperature ta (c) operating current i cc (ua) saturation voltage vs. temperature (v + =5v,i pc =20ma) 0 0.1 0.2 0.3 -50 -25 0 25 50 75 100 125 150 temperature ta (c) saturation voltage v pc(sat) (v) reference voltage vs. temperature (v + =5v,i ref =0ma) 1.22 1.23 1.24 1.25 1.26 -50-25 0 255075100125150 temperature ta (c) reference voltage v ref (v) input offset voltage vs. temperature (v + =5v) -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 -50 -25 0 25 50 75 100 125 150 temperature ta (c) input offset voltage vio (mv) a ch bch input bias voltage vs. temperature (v + =5v) -150 -100 -50 0 50 100 150 -50 -25 0 25 50 75 100 125 150 temperature ta (c) input bias voltage i b (na) a ch bch
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