BQ76952PFBR
Battery Management
Technical Specifications
| Type | Description |
|---|---|
| Working Voltage V | 42.35 V |
| Interface | I2C;SPI;HDQ |
| Iq A | 1e-06 |
| 0V Battery Charge | - |
| Type of Battery | Lithium Battery;LiFePO4 Battery |
| The Chip Type | Protection IC;Monitoring IC |
| Type | Description |
|---|---|
| Balance Current | 100mA |
| Charge Current - Max | - |
| Operating Temp | -40°C ~ +85°C |
| Features | Cell balancing;Battery temperature monitoring |
| Package / Case | TQFP-48 |
Product Introduction
The BQ76952 is a highly integrated, high-precision battery monitor and protector for 3-series to 16-series lithium-ion, lithium polymer, and LiFePO4 battery packs. The device includes a high-precision monitoring system and a highly configurable protection subsystem, with support for autonomous or host-controlled cell balancing. It integrates a high-side charge pump NFET driver, dual programmable LDOs for external system use, and a host communication peripheral supporting 400kHz I2C, SPI, and HDQ single-wire standards. The BQ76952 is available in a 48-pin TQFP package.
Features
- Battery monitoring for 3 to 16 series-connected cells
- Integrated charge pump for high-side NFET protection with optional auto-recovery
- Comprehensive protection suite including voltage, temperature, current, and internal diagnostics
- Two independent ADCs
- Synchronous current and voltage sampling
- High-accuracy coulomb counter with input offset voltage error <1μV (typical)
- High-accuracy cell voltage measurement <10mV (typical)
- Wide-range current applications (measurement range of ±200mV across sense resistor)
- Integrated chemical fuse-driven secondary protection
- Autonomous or host-controlled cell balancing
- Multiple power modes (typical battery pack operating range conditions)
- Normal mode: 286μA
- Multiple sleep mode options: 24μA to 41μA
- Multiple deep sleep mode options: 9μA to 10μA
- Shutdown mode: 1μA
- High voltage tolerance of 85V on battery connection and select other pins
- Supports random cell connection sequence during production line
- Temperature sensing using internal sensor and up to nine external thermistors
- Integrated one-time programmable (OTP) memory, customer-programmable on production line
- Communication options include 400kHz I2C, SPI, and HDQ single-wire interface
- Dual programmable LDOs for external system use
- 48-pin TQFP package (PFB)
Applications
- - Battery Backup Unit (BBU) - E-bikes, e-scooters, and LEVs - Cordless power tools and garden tools - Other industrial battery packs (P10S)
Datasheet
Compliance & Export Codes
| Type | Details |
|---|---|
| RoHS | ROHS3 |
| ECCN | EAR99 |
| CNHTS | 8542399000 |
| USHTS | 8542390001 |
| TARIC | 8542399000 |
| Type | Details |
|---|---|
| CAHTS | 8542390000 |
| BRHTS | 85423999 |
| INHTS | 85423900 |
| MXHTS | 8542.39.99 |
Sourcing Information
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