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電池管理 IC
電池監控器和平衡器

BQ76942

現行

3 串聯至 10 串聯多芯電池監控器和保護器

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BQ76942

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Number of series cells (max) 10 Number of series cells (min) 3 Features Digital output, High-side driver, I2C support, Integrated ADC, LDO output, Multi-cell support, One-time-programmable (OTP) memory, Open-wire detection, Overcurrent in charging protection, Overcurrent in discharging protection, Overtemperature protection, Overvoltage protection, Scratchpad memory, Short-current detection, Temperature sensing, Undertemperature protection, Undervoltage protection Vin (max) (V) 55 Communication interface HDQ, I2C, SPI Device type Cell monitor and balancer Operating temperature range (°C) -40 to 85 Battery overvoltage protection (min) (V) 1 Battery overvoltage protection (max) (V) 5.5 Operating current (typ) (µA) 250
Rating Catalog Number of series cells (max) 10 Number of series cells (min) 3 Features Digital output, High-side driver, I2C support, Integrated ADC, LDO output, Multi-cell support, One-time-programmable (OTP) memory, Open-wire detection, Overcurrent in charging protection, Overcurrent in discharging protection, Overtemperature protection, Overvoltage protection, Scratchpad memory, Short-current detection, Temperature sensing, Undertemperature protection, Undervoltage protection Vin (max) (V) 55 Communication interface HDQ, I2C, SPI Device type Cell monitor and balancer Operating temperature range (°C) -40 to 85 Battery overvoltage protection (min) (V) 1 Battery overvoltage protection (max) (V) 5.5 Operating current (typ) (µA) 250
TQFP (PFB) 48 81 mm² 9 x 9
  • Battery monitoring capability for 3-series to 10-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)
  • Battery monitoring capability for 3-series to 10-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)

The Texas Instruments BQ76942 is a highly integrated, high accuracy battery monitor and protector for 3-series to 10-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 BQ76942 is available in a 48-pin TQFP package.

The Texas Instruments BQ76942 is a highly integrated, high accuracy battery monitor and protector for 3-series to 10-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 BQ76942 is available in a 48-pin TQFP package.
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BQ76952 現行 適用於鋰離子、鋰聚合物和 LiFePO4 的 3s 至 16s 高準確度電池監控器和保護器 Same features as BQ76942, but optimized for up to 16s battery packs

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重要文件 類型 標題 格式選項 日期
* Data sheet BQ76942 3-Series to 10-Series High Accuracy Battery Monitor and Protector datasheet (Rev. B) 2021年 12月 2日
* User guide BQ76942 Technical Reference Manual (Rev. B) PDF | HTML 2022年 5月 11日
Application note Why is short-circuit protection more challenging for high- side driver battery packs than low-side driver? PDF | HTML 2026年 1月 23日
Application note BQ769X2 OTP Program Example Guide With Sealed Configuration 2025年 2月 24日
Application note BQ769x2 Frequently Asked Questions PDF | HTML 2024年 3月 29日
Application note Design Considerations of Stacked BQ769x2 With High-Side N-MOSFET PDF | HTML 2023年 2月 9日
Application note Using Low-Side FETs with the BQ769x2 Battery Monitor Family (Rev. A) PDF | HTML 2022年 2月 24日
Application note Cell Balancing With BQ769x2 Battery Monitors (Rev. A) PDF | HTML 2022年 2月 15日
Application note Multiple FETs with the BQ76952, BQ76942 Battery Monitors (Rev. A) 2021年 12月 3日
Application note BQ769x2 Software Development Guide (Rev. B) PDF | HTML 2021年 8月 26日
Application note BQ769x2 Calibration and OTP Programming Guide (Rev. A) PDF | HTML 2021年 8月 6日
Application note Pin Equivalent Diagrams for the BQ76952, BQ76942, and BQ769142 2021年 5月 6日
Technical article How to stack battery monitors for high-cell-count industrial applications PDF | HTML 2021年 2月 11日
Application note BQ76942 IEC ESD 61000-4-2 ESD Test Report 2020年 11月 16日
Application note Easy Configuration of BQ76942/52 Battery Monitors (Rev. A) 2020年 10月 1日
Technical article CURRENTly questioning the accuracy of your battery monitor? Improve battery safety PDF | HTML 2020年 5月 28日
Technical article Improving voltage measurement accuracy in battery monitoring systems PDF | HTML 2020年 4月 1日
Technical article Improving temperature measurement accuracy in battery monitoring systems PDF | HTML 2020年 2月 20日
Application note Parallel Paths with the BQ769x2 Battery Monitor 2020年 1月 9日
Technical article Next-generation battery monitors: how to improve battery safety while improving ac PDF | HTML 2020年 1月 6日

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BQ76942EVM — 3 系列至 10 系列鋰離子、鋰聚合物和 LiFePO4 電池監測器和保護器 EVM

BQ76942EVM 評估模組 (EVM) 是一套適用於 BQ76942 (3 芯至 10 芯鋰離子電池監控積體電路) 的完整評估系統。EVM 包含 BQ76942 電路模組，於簡易評估 BQ76942 監控功能。該電路模組包括一個 BQ76942 積體電路 (IC)、感測電阻器、熱敏電阻、功率 FET，還包括防止 10 串聯電池芯鋰離子或鋰聚合物電池組中出現電池過充、過放電、短路和過電流放電、溫度過高和過低所需的其它所有板載元件。電路模組直接連接電池中的電池芯，或可與電源供應器和隨附的電池芯模擬器電阻器連接。藉助板載介面或相容的外部介面電路板和 Microsoft® Windows® PC (...)

使用指南: PDF
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應用軟體及架構

BQ769X2-THERMISTOR-COEFF-CALCULATOR — BQ76952/42 thermistor temperature optimizer - calculate the thermistors coefficients for T range

The BQ769x2 family of battery monitors can support multiple external thermistors. The device includes an internal pullup resistor to bias the thermistor during measurement. The internal pullup resistor has two options which can set the pullup to 18 kΩ or 180 kΩ. The 18-kΩ option (...)
使用指南: PDF | HTML
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應用軟體及架構

BQSTUDIO-STABLE — Battery Management Studio (bqStudio) Software – stable version downloads for bq series of TI battery fuel gauges

Battery Management Studio (bqStudio) offers a full suite of robust tools to assist with the process of evaluating, designing with, configuring, testing, or otherwise utilizing TI Battery management products. This includes features that provide full access to registers and data memory including (...)

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BQSTUDIO-TEST — Battery Management Studio (bqStudio) Software – Beta version downloads

Battery Management Studio (bqStudio) offers a full suite of robust tools to assist with the process of evaluating, designing with, configuring, testing, or otherwise utilizing TI Battery management products. This includes features that provide full access to registers and data memory including (...)

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SLUC701 — Microcontroller Code Examples for BQ769x2 Battery Monitors

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