参数
Features | High-side driver, I2C support, Multi-cell support, Overcurrent in charging protection, Overcurrent in discharging protection, Overtemperature protection, Overvoltage protection, Separate MCU requirement, Short-current detection, Stackable (built-in interface), Temperature sensing, Undertemperature protection, Undervoltage protection |
Number of series cells (Max) | 3 |
Operating temperature range (C) | -40 to 85 |
Rating | Catalog |
特性
Battery monitoring capability for 3-series to 14-series cells
Integrated charge pump for high-side NFET protection with optional autonomous recovery
Extensive protection suite including voltage, temperature, current, and internal diagnostics
Two independent ADCs
Support for simultaneous current and voltage sampling
High-accuracy coulomb counter with input offset error < 1 µV (typical)
High accuracy cell voltage measurement < 10 mV (typical)
Wide-range current applications (±200-mV measurement range across sense resistor)
Integrated secondary chemical fuse drive protection
Autonomous or host-controlled cell balancing
Multiple power modes (typical battery pack operating range conditions)
NORMAL mode: 286 µA
Multiple SLEEP mode options: 24 µA to 41 µA
Multiple DEEPSLEEP mode options: 9 µA to 10 µA
SHUTDOWN mode: 1 µA
High-voltage tolerance of 85 V on cell connect and select additional pins
Tolerant of random cell attach sequence on production line
Support for temperature sensing using internal sensor and up to nine external thermistors
Integrated one-time-programmable (OTP) memory programmable by customers on production line
Communication options include 400-kHz I2C, SPI, and HDQ one-wire interface
Dual-programmable LDOs for external system usage
48-pin TQFP package (PFB)
描述
The Texas Instruments BQ769142 device is a highly integrated, high-accuracy battery monitor and protector for 3-series to 14-series Li-ion, Li-polymer, and LiFePO4 battery packs. The device includes a high-accuracy monitoring system, a highly configurable protection subsystem, and support for autonomous or host controlled cell balancing. Integration includes high-side charge-pump NFET drivers, dual programmable LDOs for external system use, and a host communication peripheral supporting 400-kHz I2C, SPI, and HDQ one-wire standards. The BQ769142 device is available in a 48-pin TQFP package.
