BQ24305 Series
Overvoltage and Overcurrent Protection IC and Li+ Charger Front End Protection IC
Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/
Catalog
Overvoltage and Overcurrent Protection IC and Li+ Charger Front End Protection IC
| Part | Operating Temperature [Min] | Operating Temperature [Max] | Battery Chemistry | Fault Protection | Function | Package / Case | Mounting Type | Supplier Device Package |
|---|---|---|---|---|---|---|---|---|
Texas Instruments BQ24305DSGT | 0 °C | 125 ¯C | Lithium Ion | Over Current, Over Temperature, Over/Under Voltage | Battery Protection | 8-WFDFN Exposed Pad | Surface Mount | 8-WSON (2x2) |
Texas Instruments BQ24305DSGR | 0 °C | 125 ¯C | Lithium Ion | Over Current, Over Temperature, Over/Under Voltage | Battery Protection | 8-WFDFN Exposed Pad | Surface Mount | 8-WSON (2x2) |
Key Features
• Provides Protection for Three Variables:Input OvervoltageInput Overcurrent with Current LimitingBattery Overvoltage30V Maximum Input VoltageOptional Input Reverse Polarity ProtectionHigh Immunity Against False Triggering Due to Voltage SpikesRobust Against False Triggering Due to Current TransientsThermal ShutdownEnable FunctionSmall 2 mm × 2 mm 8-Pin SON PackageLDO Mode Voltage Regulation Options:5.5V on bq243004.5V on bq243045.0V on bq24305APPLICATIONSBluetooth HeadsetsLow-Power Handheld DevicesProvides Protection for Three Variables:Input OvervoltageInput Overcurrent with Current LimitingBattery Overvoltage30V Maximum Input VoltageOptional Input Reverse Polarity ProtectionHigh Immunity Against False Triggering Due to Voltage SpikesRobust Against False Triggering Due to Current TransientsThermal ShutdownEnable FunctionSmall 2 mm × 2 mm 8-Pin SON PackageLDO Mode Voltage Regulation Options:5.5V on bq243004.5V on bq243045.0V on bq24305APPLICATIONSBluetooth HeadsetsLow-Power Handheld Devices
Description
AI
The bq24300 and bq24304 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 device operates like a linear regulator: for voltages up to the Input Overvoltage threshold, the output is held at 5.5V (bq24300), 5.0V (bq24305) or 4.5V (bq24304). In case of an input overvoltage condition, if the overvoltage condition persists for more than a few microseconds, the IC removes power from the charging circuit by turning off an internal switch. In the case of an overcurrent condition, it limits the current to a safe value for a blanking duration before turning the switch off. Additionally, the IC also monitors its own die temperature and switches off if it becomes too hot.
The IC also offers optional protection against reverse voltage at the input with an external P-channel MOSFET.
The bq24300 and bq24304 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 device operates like a linear regulator: for voltages up to the Input Overvoltage threshold, the output is held at 5.5V (bq24300), 5.0V (bq24305) or 4.5V (bq24304). In case of an input overvoltage condition, if the overvoltage condition persists for more than a few microseconds, the IC removes power from the charging circuit by turning off an internal switch. In the case of an overcurrent condition, it limits the current to a safe value for a blanking duration before turning the switch off. Additionally, the IC also monitors its own die temperature and switches off if it becomes too hot.
The IC also offers optional protection against reverse voltage at the input with an external P-channel MOSFET.