Productos
The BQ76952PFBR from Texas Instruments is a highly integrated 3-series to 16-series high-accuracy battery monitor and protector for Li-Ion, Li-Polymer, and LiFePO4 battery packs. It features two independent ADCs, high-accuracy cell voltage measurement (<10 mV), coulomb counter with <1 uV offset, autonomous cell balancing, and I2C/SPI/HDQ communication in a 48-pin TQFP package.
Especificaciones
| Cell Count | 3S to 16S |
| Cell Chemistry | Li-Ion, Li-Polymer, LiFePO4 |
| Cell Voltage Accuracy | <10 mV typical |
| Coulomb Counter Offset | <1 uV typical |
| ADC Channels | 2 independent ADCs |
| Comunicación | 400 kHz I2C, SPI, HDQ |
| Cell Balancing | Autonomous or host-controlled |
| Normal Mode Current | 286 uA typical |
| Shutdown Mode Current | 1 uA typical |
| High-Voltage Tolerance | 85V on cell connect pins |
| Paquete | TQFP-48 (7 x 7 mm) |
| Temperatura de funcionamiento | -40C to +85C |
Características
- Integrated charge pump for high-side NFET protection
- Comprehensive protection: voltage, temperature, current, diagnostics
- Simultaneous current and voltage sampling
- Autonomous or host-controlled cell balancing
- 9 external thermistor inputs + internal temperature sensor
- One-time programmable (OTP) memory for customer configuration
- Dual programmable LDOs for external system use
Aplicaciones
- Electric bicycle and scooter battery packs
- Cordless power tools
- Energy storage systems
- Industrial battery backup units