Datasheet Texas Instruments BQ24313DSGT — 数据表

bq24313
bq24315
www.ti.com. SLUS817A – MARCH 2008 – REVISED NOVEMBER 2008 OVERVOLTAGE AND OVERCURRENT PROTECTION IC AND
Li+ CHARGER FRONT-END PROTECTION IC
FEATURES 1 Provides Protection for Three Variables:
– Input Overvoltage, with Rapid Response in
< 1 Вµs
– User-Programmable Overcurrent with
Current Limiting
– Battery Overvoltage 30V Maximum Input Voltage Supports up to 1.5A Input Current Robust Against False Triggering Due to
Current Transients Thermal Shutdown Enable Input Status Indication – Fault Condition
23 5.5V LDO Mode Voltage Regulation
Available in Space-Saving Small 8 Lead 2mm
Г—2mm SON APPLICATIONS Mobile Phones and Smart Phones
PDAs
MP3 Players
Low-Power Handheld Devices
Bluetoothв„ў Headsets DESCRIPTION
The bq24313 and bq24315 are highly integrated circuits designed to provide protection to Li-ion batteries from
failures of the charging circuit. The IC continuously monitors the input voltage, the input current, and the battery
voltage. The output acts as a linear regulator. The output is regulated to VO(REG) for inputs between VO(REG) and
the overvoltage threshold. If an input overvoltage condition occurs, the IC immediately removes power from the
charging circuit by turning off an internal switch. In the case of an overcurrent condition, it limits the system …