TI BQ24314ADSGT

The bq24314A 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 140°C. The input overcurrent threshold is user-programmable. The device can be controlled by a processor and also provides status information about fault conditions to the host.

• Provides Protection for Three Variables: Input Overvoltage, With Rapid Response in < 1 µs
• User-Programmable Overcurrent With Current Limiting
• Battery Overvoltage
• Maximum Input Voltage of 30 V
• Supports up to 1.5-A Input Current
• Robust Against False Triggering Due to Current Transients
• Thermal Shutdown
• Enable Input
• Status Indication – Fault Condition
• Available in Space-Saving Small 8 Lead 2x2 WSON

• Mobile Phones and Smart Phones
• PDAs
• MP3 Players
• Low-Power Handheld Devices
• Bluetooth Headsets