BQ76942PFBR
| Parameters | |
|---|---|
| Series | - |
| Moisture Sensitivity Level (MSL) | 2 (1 Year) |
| RoHS Status | Not applicable |
| Package / Case | 48-TQFP |
| Interface | I²C, SPI |
| Mfr | Texas Instruments |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Number of Cells | 3 ~ 10 |
| Battery Chemistry | Lithium Ion/Polymer |
| Supplier Device Package | 48-TQFP (7x7) |
| Function | Multi-Function Controller |
| Fault Protection | Over Current, Over Temperature, Over Voltage, Short Circuit |
| Package | Tape & Reel (TR) |
| Product Status | Active |
| Base Product Number | BQ76942 |
| Standard Package | 1,000 |
| ECCN | EAR99 |
| HTSUS | 8542.39.0001 |
BQ76942PFBR battery monitor and protector
The BQ76942PFBR from Texas Instruments is a highly integrated, high-accuracy battery monitor and protector supplied in a 48-TQFP package on tape-and-reel, designed for 3-series to 10-series Li-ion, Li-polymer, and LiFePO4 battery packs. The device includes a high-accuracy monitoring system with two independent ADCs, a highly configurable protection subsystem, and support for autonomous or host-controlled cell balancing. It operates from a supply voltage of 4.7 V to 55 V, with a typical supply current of 286 microamps in normal mode, and integrates a high-side charge pump for NFET protection drivers with optional autonomous recovery. The BQ76942PFBR supports 400-kHz I2C, SPI, and HDQ one-wire communication interfaces, and is rated for the industrial temperature range of -40 degrees C to +85 degrees C, making it suitable for demanding battery management applications.
The BQ76942PFBR excels in a broad spectrum of battery-powered applications requiring precise monitoring and robust protection, including cordless power tools, garden equipment, vacuum cleaners, e-bikes, e-scooters, light electric vehicles, and non-military drones. It serves as an ideal battery management system front-end for industrial battery packs, portable power stations, and energy storage systems where accurate state-of-charge estimation and cell balancing are critical. The device is widely adopted in consumer and industrial products that demand high reliability, such as robotic cleaners, power tool battery packs, and small electric vehicle battery modules where integrated protection and communication flexibility reduce overall system complexity.
Alternative battery monitor Options
● BQ76972PFBR offers 3-series to 16-series monitoring with improved 3.0 mV cell voltage accuracy and additional diagnostic features, serving as a higher-performance alternative for automotive and industrial applications.
● BQ76907 is a compact 20-pin QFN variant designed for 2-series to 7-series cells, featuring low-side NFET drivers and a single programmable LDO for space-constrained designs with reduced cell counts.
● MAX17823BGCB is a 12-channel high-voltage data acquisition system with 2 mV measurement accuracy, AEC-Q100 Grade 2 qualification, and daisy-chain capability for up to 32 devices, optimized for automotive battery management systems requiring ASIL D safety integrity levels.
