BQ24311 Series
Overvoltage and Overcurrent Protection Li+ Charger Front-end Protection IC
Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/
Catalog
Overvoltage and Overcurrent Protection Li+ Charger Front-end Protection IC
| Part | Battery Chemistry | Function | Supplier Device Package | Mounting Type | Package / Case | Operating Temperature [Max] | Operating Temperature [Min] | Fault Protection |
|---|---|---|---|---|---|---|---|---|
Texas Instruments BQ24311DSGT | Lithium Ion | Battery Protection | 8-WSON (2x2) | Surface Mount | 8-WFDFN Exposed Pad | 125 ¯C | -40 °C | Over Current, Over Temperature, Over/Under Voltage |
Key Features
• Provides Protection for Three Variables:Input Overvoltage, with Rapid Response in < 1 µsUser-Programmable Overcurrent with Current LimitingBattery Overvoltage30 V Maximum Input VoltageSupports up to 0.3 A Input CurrentRobust Against False Triggering Due to Current TransientsThermal ShutdownEnable InputStatus Indication – Fault ConditionProvides Protection for Three Variables:Input Overvoltage, with Rapid Response in < 1 µsUser-Programmable Overcurrent with Current LimitingBattery Overvoltage30 V Maximum Input VoltageSupports up to 0.3 A Input CurrentRobust Against False Triggering Due to Current TransientsThermal ShutdownEnable InputStatus Indication – Fault Condition
Description
AI
The bq24311 is a highly integrated circuit designed to protect Li-ion batteries from charging circuit failures. The IC continuously monitors the input voltage, input current, and battery voltage. The input overvoltage protection immediately removes power from the charging circuit by turning off an internal switch. The input protection limits the system current at the user-programmable value, and if the overcurrent persists, switches the pass element OFF after a blanking period. Additionally, the IC also monitors its own die temperature and switches off if it becomes too hot.
The IC can be controlled by a processor and also provides status information about fault conditions to the host.
The bq24311 is a highly integrated circuit designed to protect Li-ion batteries from charging circuit failures. The IC continuously monitors the input voltage, input current, and battery voltage. The input overvoltage protection immediately removes power from the charging circuit by turning off an internal switch. The input protection limits the system current at the user-programmable value, and if the overcurrent persists, switches the pass element OFF after a blanking period. Additionally, the IC also monitors its own die temperature and switches off if it becomes too hot.
The IC can be controlled by a processor and also provides status information about fault conditions to the host.