mitsumi open collector output temperature switch mm1523 n/mm1524 n open collector output temperature switch monolithic ic mm1523 n/mm1524 n outline this ic is a temperature switch that emits a logic signal when chip temperature during load reaches the set detection temperature. it is composed of a temperature detection circuit and a comparator. features 1. detection temperature precision ??c max. 2. detection temperature hysteresis 10?c typ. 3. detection temperature is lined up in 10?c steps by trimming in the +50?c ~ +100?c range. 4. active low output/mm1523 n 5. active high output/mm1524 n 6. consumption current 90? (when off/typ.) 7. operating power voltage range +2.7~+10.0v 8. operating temperature range - 40~+125?c package sot-25a applications 1. cpu heat protection 2. battery charger heat protection 3. cellular phones pin description pin no. pin name function 1,3 n.c 2 gnd gnd pin 4 v cc v cc pin 5 v out output pin absolute maximum ratings (ta=25?c) item symbol rating unit storage temperature t stg - 55~+150 ?c operating temperature t opr - 40~+125 ?c supply voltage v cc max. +13 v output current i out max. 10 ma allowable loss pd 188 mw
mitsumi open collector output temperature switch mm1523 n/mm1524 n electrical characteristics (except where noted otherwise, v cc =3v, ta= - 40~+125?c, i out =0?) item symbol measuring circuit min. typ. max. unit 47 50 53 ?c 57 60 63 ?c temperature threshold * 1 t th 67 70 73 ?c 77 80 83 ?c 87 90 93 ?c 97 100 103 ?c current consumption when turning it off i ccoff v cc =2.7~10v 90 150 ? current consumption when turning it on i ccon v cc =2.7~10v 160 230 ? temperature threshold hysteresis * 2 t hyst 10 ?c output leakage current when turning it off i off vcc=2.7~10v ta=25?c ?.1 ? low-level output voltage v lo i out =1ma 0.1 0.4 v note: * 1 temperature threshold note: * 2 temperature threshold hysteresis: t hyst model name temperature threshold mm1523an mm1524an 50?c mm1523bn mm1524bn 60?c mm1523cn mm1524cn 70?c mm1523dn MM1524DN 80?c mm1523en mm1524en 90?c mm1523fn mm1524fn 100?c temperature threshold: t th temperature t hyst= 10?c t th -t hyst mm1523 n output mm1524 n output
mitsumi open collector output temperature switch mm1523 n/mm1524 n block diagram mm1523 n mm1524 n measuring circuit
mitsumi open collector output temperature switch mm1523 n/mm1524 n application circuits microprocessor warning/reset ?mm1523 n fan control ?m1524 n
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