BQ298000 Series
High-side protector for single-cell li-ion and li-polymer batteries
Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/
Catalog
High-side protector for single-cell li-ion and li-polymer batteries
| Part | Package / Case | Mounting Type | Number of Cells | Battery Chemistry | Operating Temperature [Max] | Operating Temperature [Min] | Supplier Device Package | Function | Fault Protection |
|---|---|---|---|---|---|---|---|---|---|
Texas Instruments BQ298000RUGR | 8-XFQFN | Surface Mount | 1 | Lithium Ion/Polymer | 85 °C | -40 °C | 8-X2QFN (1.5x1.5) | Battery Protection | Over Current, Over Temperature, Over Voltage |
Texas Instruments BQ298000RUGT | 8-XFQFN | Surface Mount | 1 | Lithium Ion/Polymer | 85 °C | -40 °C | 8-X2QFN (1.5x1.5) | Battery Protection | Over Current, Over Temperature, Over Voltage |
Key Features
• Voltage protection:Overvoltage (OV): ±10mVUndervoltage (UV): ±20mVCurrent protection:Overcurrent in charge (OCC): ±1mVOvercurrent in discharge (OCD): ±1mVShort circuit in discharge (SCD): ±5mVTemperature protection:Overtemperature (OT)Additional features:Supports as low as a 1mΩ sense resistor (RSNS)High-side protectionHigh Vgs FET drive0V charging (only BQ2980)CTR pin for FET override control for system reset/shutdownConfigure CTR for second OT protection through an external PTC thermistorCurrent consumption:NORMAL mode: 4µASHUTDOWN mode: 0.1µA maximumPackage:8pin X2QFN: 1.50 × 1.50 × 0.37mmVoltage protection:Overvoltage (OV): ±10mVUndervoltage (UV): ±20mVCurrent protection:Overcurrent in charge (OCC): ±1mVOvercurrent in discharge (OCD): ±1mVShort circuit in discharge (SCD): ±5mVTemperature protection:Overtemperature (OT)Additional features:Supports as low as a 1mΩ sense resistor (RSNS)High-side protectionHigh Vgs FET drive0V charging (only BQ2980)CTR pin for FET override control for system reset/shutdownConfigure CTR for second OT protection through an external PTC thermistorCurrent consumption:NORMAL mode: 4µASHUTDOWN mode: 0.1µA maximumPackage:8pin X2QFN: 1.50 × 1.50 × 0.37mm
Description
AI
The BQ298xx family of devices, featuring integrated charge-pump FET drivers, provides high-side primary battery cell protection for 1-series Li-ion and Li-polymer batteries, enabling consistent Rdson across cell voltages. For better system thermal performance, the BQ298xx device’s accuracy enables the use of a sense resistor as low as 1mΩ.
The CTR pin in the BQ298xx device can be configured to override the FET driver by host control to create a system reset or shutdown function. Alternatively, the CTR pin can be configured to connect an external Positive Temperature Coefficient (PTC) thermistor for FET OT protection in addition to the internal die temperature sensor. The BQ2980xx devices support zero-volt (0V) charging, while the BQ2982xx devices have this disabled.
The BQ298xx family of devices, featuring integrated charge-pump FET drivers, provides high-side primary battery cell protection for 1-series Li-ion and Li-polymer batteries, enabling consistent Rdson across cell voltages. For better system thermal performance, the BQ298xx device’s accuracy enables the use of a sense resistor as low as 1mΩ.
The CTR pin in the BQ298xx device can be configured to override the FET driver by host control to create a system reset or shutdown function. Alternatively, the CTR pin can be configured to connect an external Positive Temperature Coefficient (PTC) thermistor for FET OT protection in addition to the internal die temperature sensor. The BQ2980xx devices support zero-volt (0V) charging, while the BQ2982xx devices have this disabled.