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电池电量监测

BQ2040

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符合智能电池系统 (SBS) 1.0 标准的多化合物电量监测计，具有 4 个 LED 驱动器

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BQ2040

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产品详情

Cell chemistry Lead Acid, Li-Ion/Li-Polymer, NiCd, NiMH Number of series cells 2-4 Cells Communication interface SMBus Battery capacity (min) (mAh) 800 Battery capacity (max) (mAh) 10000 Implementation Pack External capacity indication LED Features Coulomb Counter Operating temperature range (°C) 0 to 70 Rating Catalog
Cell chemistry Lead Acid, Li-Ion/Li-Polymer, NiCd, NiMH Number of series cells 2-4 Cells Communication interface SMBus Battery capacity (min) (mAh) 800 Battery capacity (max) (mAh) 10000 Implementation Pack External capacity indication LED Features Coulomb Counter Operating temperature range (°C) 0 to 70 Rating Catalog
SOIC (D) 16 59.4 mm² 9.9 x 6
  • Provides accurate measurement of available charge in NiCd, NiMH, and Li-Ion batteries
  • Supports SBS v1.0 data set and two-wire interface
  • Monitors charge FET in Li-Ion pack protection circuit
  • Designed for battery pack integration
    - Low operating current
    - Complete circuit can fit on less than 3/4 square inch of PCB space
  • Supports SBS charge control commands for NiCd, NiMH, and Li-Ion
  • Drives a four-segment LED display for remaining capacity indication
  • 16-pin narrow SOIC
  • Provides accurate measurement of available charge in NiCd, NiMH, and Li-Ion batteries
  • Supports SBS v1.0 data set and two-wire interface
  • Monitors charge FET in Li-Ion pack protection circuit
  • Designed for battery pack integration
    - Low operating current
    - Complete circuit can fit on less than 3/4 square inch of PCB space
  • Supports SBS charge control commands for NiCd, NiMH, and Li-Ion
  • Drives a four-segment LED display for remaining capacity indication
  • 16-pin narrow SOIC

The bq2040 Gas Gauge IC With SMBus Interface is intended for battery-pack or in-system installation to maintain an accurate record of available battery charge. The bq2040 directly supports capacity monitoring for NiCd, NiMH, and Li-Ion battery chemistries.

The bq2040 uses the System Management Bus v1.0 (SMBus) protocol and supports the Smart Battery Data (SBData) commands. The bq2040 also supports the SBData charge control functions. Battery state-of-charge, remaining capacity, remaining time, and chemistry are available over the serial link. Battery-charge state can be directly indicated using a four-segment LED display to graphically depict battery full-to-empty in 25% increments.

The bq2040 estimates battery self-discharge based on an internal timer and temperature sensor and user-programmable rate information stored in external EEPROM. The bq2040 also automatically recalibrates or \x93learns\x94 battery capacity in the full course of a discharge cycle from full to empty.

The bq2040 may operate directly from three nickel chemistry cells. With the REF output and an external transistor, a simple, inexpensive regulator can be built to provide VCC for other battery cell configurations.

An external EEPROM is used to program initial values into the bq2040 and is necessary for proper operation.

The bq2040 Gas Gauge IC With SMBus Interface is intended for battery-pack or in-system installation to maintain an accurate record of available battery charge. The bq2040 directly supports capacity monitoring for NiCd, NiMH, and Li-Ion battery chemistries.

The bq2040 uses the System Management Bus v1.0 (SMBus) protocol and supports the Smart Battery Data (SBData) commands. The bq2040 also supports the SBData charge control functions. Battery state-of-charge, remaining capacity, remaining time, and chemistry are available over the serial link. Battery-charge state can be directly indicated using a four-segment LED display to graphically depict battery full-to-empty in 25% increments.

The bq2040 estimates battery self-discharge based on an internal timer and temperature sensor and user-programmable rate information stored in external EEPROM. The bq2040 also automatically recalibrates or \x93learns\x94 battery capacity in the full course of a discharge cycle from full to empty.

The bq2040 may operate directly from three nickel chemistry cells. With the REF output and an external transistor, a simple, inexpensive regulator can be built to provide VCC for other battery cell configurations.

An external EEPROM is used to program initial values into the bq2040 and is necessary for proper operation.
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类型 标题 下载最新的英语版本 日期
* 数据表 Gas Gauge IC With SMBus Interface 数据表 1999年 9月 5日
应用手册 Wide-Vin Battery-Charger Using SMBus MSP430 MCUs and bq Fuel Gauges (Rev. B) PDF | HTML 2019年 7月 12日
应用手册 bq2040-D111 to bq2040-C408 Change List 2003年 10月 20日
用户指南 bq2040 EVM 2000年 4月 10日
用户指南 bq2040 SBS v1.0 Gas Gauge Demonstration Module 2000年 4月 10日
应用手册 U-513 Using the bq2040, Smart Battery System Gas Gauge IC 1999年 9月 5日

设计和开发

如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。

支持软件

SLUC013 — Software for the bq2040

支持的产品和硬件

支持的产品和硬件

产品
电池电量监测
BQ2040 — 符合智能电池系统 (SBS) 1.0 标准的多化合物电量监测计，具有 4 个 LED 驱动器
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SOIC (D) 16 查看选项
应遵守 TI 评估类商品的标准条款与条件。

订购和质量

包含信息：
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息：
  • 制造厂地点
  • 封装厂地点

支持和培训

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