Datasheet Texas Instruments BQ24314CDSGR — 数据表

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SLUSAV3A – AUGUST 2012 – REVISED JULY 2015 bq24314C Overvoltage and Overcurrent Protection IC and
Li+ Charger Front-End Protection IC
1 Features 3 Description The bq24314C device is a highly integrated circuit
(IC) designed to provide protection to Li-ion batteries
from failures of the charging circuit. The device
continuously monitors the input voltage, the input
current, and the battery voltage. In case of an input
overvoltage condition, the device immediately
removes power from the charging circuit by turning
off an internal switch. In the case of an overcurrent
condition, it limits the system current at the threshold
value, and if the overcurrent persists, switches the
pass element OFF after a blanking period.
Additionally, the device also monitors its own die
temperature and switches off if it exceeds 140В°C. The
input overcurrent threshold is user-programmable. 1 Provides Protection for Three Variables:
– Input Overvoltage, with Rapid Response in 4.4 V 4.4 4.45 4.5 V Vhys(Bovp) Hysteresis on BVOVP CE = Low, VIN > 4.4 V 200 280 350 mV IVBAT Input bias current on VBAT pin VBAT = 4.4 V, TJ = 25В°C 10 nA TDGL(Bovp) Deglitch time, battery overvoltage …