njm2380/a , NJM2390/a -1- ver.2007-02-07 njm2380d ? ? ? ? ad njm2380m ? ? ? ? am njm2380u ? ? ? ? a u NJM2390u ? ? ? ? au njm2380e ? ? ? ? ae njm2380f ? ? ? ? af adjustable high precision shunt regulator general description package outline the njm2380/a , NJM2390/a is an adjustable high precision shunt regulator. it is adapted for downsizing power supply module, battery charger and others, because an ultra mini package sot23(mtp5) is included in the package line-up. features operating voltage v ref to 18v high precision voltage reference 2.465v2% 2.465v1% : a version mounted in ultra mini package sot23 (mtp5) minimum external parts bipolar technology package outline dip8, dmp8, emp8, sot89 (3pin), sot23 (mtp5) pin configuration block diagram njm2380d ? ? ? ? ad njm2380m ? ? ? ? am njm2380e ? ? ? ? ae 1. cathode 2. nc 3. nc 4. nc 5. nc 6. anode 7. nc 8. reference pin function njm2380u ? ? ? ? au 1. reference 2. anode 3. cathode pin function NJM2390u ? ? ? ? au 1. cathode 2. anode 3. reference pin function njm2380f ? ? ? ? af 1. nc 2. anode 3. nc 4. cathode 5. reference pin function
njm2380/a , NJM2390/a - 2 - ver.2007-02-07 absolute maximum ratings (t a =25c) parameter symbol ratings unit cathode voltage v ka +20 v continuous cathode current i ka -100 to 150 ma reference input current i ref -0.05 to 10 ma power dissipation p d (dip8) 700 mw (dmp8) 300 (emp8) 300 (sot89) 350 (sot23[mtp5]) 200 operating temperature range t opr -40 to +85 c storage temperature range t stg -50 to +150 c recommended operating conditions parameter symbol min. typ. max. unit cathode voltage v ka v ref - 18 v cathode current i k 1 100 ma electrical characteristics (i k =10ma, t a =25c) parameter symbol conditions min. typ. max. unit reference voltage v ref v ka =v ref (*1) 2415 2465 2515 v ka =v ref (*1), a version 2440 2465 2490 mv v ref /v ka v ref v ka 10v(*2) - 1.4 2.7 mv/v reference voltage change vs. cathode voltage change 10 v ka 18v(*2) - 1 2 mv/v reference input current i ref r=10k ? , r2= (*2) - 2 4 a minimum input current i min v ka =v ref (*1) - 0.4 1.0 ma cathode current (off cond.) i off v ka =18v, v ref =0v(*3) - 0.1 1.0 a dynamic impedance z ka v ka =v ref , f 1khz 1ma i k 100ma(*1) - 0.2 - ? temperature characteristics (i k =10ma, t a =-20 to +85c) parameter symbol conditions min. typ. max. unit reference voltage change ? v ref v ka =v ref (*1) - 8 17 mv reference input current change ? i ref r1=10k ? , r2= (*2) - 0.4 1.2 a the "reference voltage change" and "reference input current change" is tested to using some samples of the first five lots. the se "temperature characteristics" are not guaranteed. v ref ?reference voltage includes error. (*1) : test circuit 1 (fig.1) (*2) : test circuit 2 (fig.2) (*3) : test circuit 3 (fig.3)
njm2380/a , NJM2390/a - 3 - ver.2007-02-07 test circuit power dissipation vs. ambient temperature 0 100 200 300 400 500 600 700 800 0 25 50 75 100 ambient temperature ta (c) power dissipation p d (mw) sot89 sot23 (mtp5) dip dmp/emp 1, v ka =v ref v o =v ka =v ref (fig.1) 2, v ka >v ref v o =v ka =v ref ? ? ? ? ? ? ? ? + r2 r1 1+i ref r1 (fig.2) 3, i off (fig.3)
njm2380/a , NJM2390/a - 4 - ver.2007-02-07 typical characteristics reference voltage reference voltage v ka =v ref | t a =25c i k =10ma | r1=variable | r2=2.5k ? | t a =25c reference input current reference voltage i k =10ma | r1=10k ? | r2= v ka =v ref | i k =10ma sefety operating boundary condition dynamic inpedance t a =25c i k =10ma | t a =25c note) oscillation might occure while operating within the range of sefety curve. so that, it is necessary to make ample margins by taking considerations of fluctuation of the device. [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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