3-s to 14-s high-accuracy battery monitor and protector for Li-ion, Li-polymer and LiFePO4 battery
Product details
Parameters
Package | Pins | Size
Features
- 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)
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Description
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.
Similar but not functionally equivalent to the compared device:
Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | BQ769142 3-Series to 14-Series High Accuracy Battery Monitor and Protector for Li-Ion, Li-Polymer, and LiFePO4 Battery Packs datasheet (Rev. A) | Feb. 15, 2021 |
Technical article | How to stack battery monitors for high-cell-count industrial applications | Feb. 11, 2021 | |
User guide | BQ769142 Technical Reference Manual | Jan. 04, 2020 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The BQ76952EVM evaluation module (EVM) is a complete evaluation system for the BQ76952, a 3-cell to 16-cell Li-Ion battery monitor integrated circuit. The EVM consists of a BQ76952 circuit module which is used for simple evaluation of the BQ76952 monitor function. The circuit module includes one (...)
Features
- Complete evaluation system for the BQ76952 3-cell to 16-cell Li-Ion and Phosphate battery monitor
- Populated circuit module for 16-cell configuration for quick setup
- Communication available with included USB interface adapter or available on 4-pin connector
- Resistor cell simulator for operation with (...)
Design tools & simulation
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
TQFP (PFB) | 48 | 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.
Support & training
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