njm2103 - 1 - ver.2012-07-09 1 2 3 4 5 6 7 8 + - + - comp.b comp.a 100k ? 40k ? + - + - r s q + - reference voltage 10a 6a comp.c 1.235v 1.235v v + v sc gnd out c reset c t v sb / resin v sa system reset ic general description package outline njm2103 is supply voltage supervisory ic to detect the abnormal conditions, such as shut down of a ll supply voltages at once, or sudden voltage down and then generate the reset signal. it supervises both 5v supply voltage and the voltage optionally set up. features precise detection of supply voltage down (v sa =4.2v2.5%) possible detection of optional voltage down (v sb =1.22v1.5%) possible detection of optional over-loading low operating current (i cc Q 560a@v sb =5v) reference voltage can be taken out. low reset validated voltage (v + =0.8v typ.) voltage detection with hystersis feature package outline dip8, dmp8, sip8 bipolar technology pin configuration block diagram njm2103d njm2103m njm2103l pin function 1. c t 2. v sc 3. out c 4. gnd 5. v + 6. v sb / resin 7. v sa 8. reset njm2103d njm2103m njm2103l
njm2103 - 2 - ver.2012-07-09 absolute maximum ratings (t a =25c) parameter symbol ratings unit supply voltage v + 20 v power dissipation p d (dip8) 500 mw (dmp8) 300 mw (sip8) 800 mw input voltage a v sa v + +0.3 (<20) v input voltage b v sb 20 v input voltage c v sc 20 v operating temperature range t opr -40 to +85 c storage temperature range t stg -40 to +125 c electrical characteristics dc characteristics (v + =5.0v, v sb =0v, v sc =0v, t a =25c) parameter symbol condition min. typ. max. unit operating current (1) i cc1 v sb =5v - 380 560 a operating current (2) i cc2 - 460 700 a v sa detecting voltage (1) v sal v + fall time v sb =v + 4.10 4.20 4.30 v v sa detecting voltage (2) v sah v + rise time v sb =v + 4.20 4.30 4.40 v v sa hysterisis width v hrsa 50 100 150 mv v sb detecting voltage v sbl v sb fall time 1.202 1.220 1.238 v v sb dtetecting supply voltage fluctuation ? v sbl v + =3.5 to 18v - 3 10 mv v sb hysterisis width v hrsb 14 28 42 mv v sb input current (1) i ihb v sb =5v - 0 250 na v sb input current (2) i ilb - 20 250 na high level reset output voltage v ohr i reset =-5a, v sb =5v 4.5 4.9 - v reset output saturating voltage (1) v olr1 i reset =2ma - 0.20 0.40 v reset output saturating voltage (2) v olr2 i reset =10ma - 0.30 0.50 v reset output sink current i reset v olr =1.0v 20 80 - ma c t charge current i ct v sb =5v, vct=0.5v 6.0 9.5 13.0 a v sc input current (1) i ihc v sc =5v - 0 500 na v sc input current (2) i ilc - 50 500 na v sc detecting voltage v sc 1.215 1.235 1.255 v v sc detecting supply voltage fluctuation ? v sc v + =3.5 to 13.5v - 3 10 mv out c output leak current i ohc v ohc =13.5v - 0 1 a out c output saturation voltage v olc i out =4ma, v sc =5v - 0.10 0.40 v out c output sink current i outc v olc =1.0v, v sc =5v 6 20 - ma reset guarantee minimum supply voltage v + l v olr =0.4v, i reset =200a - 0.8 1.2 v ac characteristics (v + =5.0v, v sb =5.0v, v sc =0v, c t =0.01f, t a =25c) item symbol condition min. typ. max. unit v sa input pulse width t pia - 3.0 - s v sb input pulse width t pib - 1.5 - s reset output pulse width t po v sb =v + - 1.5 - ms reset rise time t r v sb =v + , r l =2.2k ? , c i =100pf - 1.0 - s reset fall time t f v sb =v + , r l =2.2k ? , c l =100pf - 0.1 - s output delay time t pd v sb fall time - 2 - s output delay time t phl v sc rise time, r l =2.2k ? , c l =100pf - 0.5 - s output delay time t plh v sc fall time, r l =2.2k ? , c l =100pf - 1.0 - s
njm2103 - 3 - ver.2012-07-09 terminal function pin no. symbol function in side equivalent circuit 1 c t pin connection to capacitor, set the reset holding time. 2 v sc comparator input 3 out c open collector output of comparator c.
njm2103 - 4 - ver.2012-07-09 terminal function pin no. symbol function in side equivalent circuit 4 gnd ground 5 v + operating voltage 6 v sb / resin comparator b input 7 v sa comparator a input 8 reset reset output internalizing pull up resistor
njm2103 - 5 - ver.2012-07-09 application circuit 1) 5v supply voltage monitor 2) monitoring of optional supply voltage (v + Q 13.5v) 3) monitoring of optional supply voltage (v + >13.5v) 4) compulsry reset detecting voltage P ? ? ? ? ? ? ? ? + 2 1 r r 1v sb (notice) if it were that v + indicates under 4.50v, connec t 7 pin to v + detecting voltage P ? ? ? ? ? ? ? ? + 5 4 r r 1v sb constant voltage output v s P ? ? ? ? ? ? ? ? + 2 1 r r 1v sc reset output P ? ? ? ) level low ( ov ) level high ( v s input reset signal ttl level to v sb - terminal
njm2103 - 6 - ver.2012-07-09 5) 5v, v cc <12v supply voltage monitor 6) non-inverting reset typical characteristics operating current 1 vs. operating voltage operating current 2 vs. operating voltage output voltage vs. operating voltage detect voltage (v sa ) vs. temperature
njm2103 - 7 - ver.2012-07-09 typical characteristics detect voltage (v sa ) vs. temperature detect voltage (v sc ) vs. temperature output voltage vs. output current output voltage vs. output current output voltage (out c ) vs. output current (i outc ) detect voltage (v sb , v sc ) vs. supply voltage
njm2103 - 8 - ver.2012-07-09 typical characteristics reset hold time vs. g reset hold time vs. operating voltage [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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