Texas Instruments BQ24312DSGR

Description
The bq24312 is an integrated circuit designed to protect Li-ion batteries from charging circuit failures. It monitors input voltage, input current, and battery voltage. In case of input overvoltage, it removes power from the charging circuit by turning off an internal switch. For overcurrent conditions, it limits system current at the threshold value and switches off the pass element after a blanking period. It also monitors its own die temperature and switches off if it exceeds 140°C. The input overcurrent threshold is user-programmable. The IC can be controlled by a processor and provides status information about fault conditions to the host.

Features
Provides protection for three variables:
Input overvoltage protection
User-programmable overcurrent with current limiting
Battery overvoltage
30V maximum input voltage
Supports up to 1.5A input current
Available in space-saving small 8-lead 2x2SON
Robust against false triggering due to current transients
Thermal shutdown
Enable input
Status indication - fault condition

Applications
Mobile phones and smart phones
PDAs
MP3 players
Low-power handheld devices
Bluetooth headsets