High-side protector for single-cell li-ion and li-polymer batteries
Product details
Parameters
Package | Pins | Size
Features
- Voltage protection:
- Overvoltage (OV): ±10 mV
- Undervoltage (UV): ±20 mV
- Current protection
- Overcurrent in charge (OCC): ±1 mV
- Overcurrent in discharge (OCD): ±1 mV
- Short circuit in discharge (SCD): ±5 mV
- Temperature protection:
- Overtemperature (OT)
- Additional features:
- Supports as low as a 1-mΩ sense resistor (RSNS)
- High-side protection
- High Vgs FET drive
- 0-V charging (only BQ2980)
- CTR pin for FET override control for system reset/shutdown
- Configure CTR for second OT protection through an external PTC thermistor
- Current consumption:
- NORMAL mode: 4 µA
- SHUTDOWN mode: 0.1-µA maximum
- Package:
- 8-pin X2QFN: 1.50 × 1.50 × 0.37 mm
Description
The BQ298xyz 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 BQ298x device’s accuracy enables the use of a sense resistor as low as 1 mΩ.
The CTR pin in the BQ298x 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 BQ2980xy devices support zero-volt (0-V) charging, while the BQ2982xy devices have this disabled.
Technical documentation
| Type | Title | Date | |
|---|---|---|---|
| * | Data sheet | BQ298xyz Voltage, Current, Temperature Protectors with an Integrated High-Side NFET Driver for Fast/Flash Charging Single-Cell Li-Ion and Li-Polymer Batteries datasheet (Rev. H) | Jul. 19, 2021 |
| User guide | BQ2980EVM-883 Evaluation Module for BQ2980 High-Side Driver | May 11, 2017 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
Features
- Easy to use impedance track gas gauge
- Accurate cell current, temperature and voltage monitoring
- Over-voltage, under-voltage, over-current, over-temperature and under-temperature protection
- 1-mOhm sense resistor
- On-board EV2400
- On-board dual programmable chargers
Description
The BQ2980EVM-883 evaluation module (EVM) is to evaluate the BQ2980 family of high-side protectors. The BQ2980EVM-883 demonstrates the performance of the BQ2980 family in fast charging and high current application as high as 8 A of continuous current. The BQ2980EVM-883 is ideal for evaluation in (...)
Features
- Up to 8 A of continuous charge and discharge currents
- Small solution footprint and active component area
- Various test points on key features of BQ2980 (i.e. CTR pin)
CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| X2QFN (RUG) | 8 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
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