主页 电池管理 IC 电池充电器 IC
主页
电池管理 IC
电池充电器 IC

BQ24750A

正在供货

具有集成系统电源选择器的主机控制型 2 至 4 节降压电池充电控制器

立即订购
数据表

BQ24750A

正在供货
数据表 立即订购

产品详情

Number of series cells 2, 3, 4 Charge current (max) (A) 10 Vin (max) (V) 24 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 8 Battery charge voltage (max) (V) 18.048 Absolute max Vin (max) (V) 30 Control topology Switch-Mode Buck Control interface SMBus Features BAT temp thermistor monitoring (hot/cold profile) Vin (min) (V) 5 Rating Catalog Operating temperature range (°C) -40 to 125
Number of series cells 2, 3, 4 Charge current (max) (A) 10 Vin (max) (V) 24 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 8 Battery charge voltage (max) (V) 18.048 Absolute max Vin (max) (V) 30 Control topology Switch-Mode Buck Control interface SMBus Features BAT temp thermistor monitoring (hot/cold profile) Vin (min) (V) 5 Rating Catalog Operating temperature range (°C) -40 to 125
VQFN (RHD) 28 25 mm² 5 x 5
  • NMOS-NMOS Synchronous Buck Converter with 300 kHz Frequency and >95% Efficiency
  • 30-ns Minimum Driver Dead-time and 99.5% Maximum Effective Duty Cycle
  • High-Accuracy Voltage and Current Regulation
    • ±0.5% Charge Voltage Accuracy
    • ±3% Charge Current Accuracy
    • ±3% Adapter Current Accuracy
    • ±2% Input Current Sense Amp Accuracy
  • Integration
    • Automatic System Power Selection From AC/DC Adapter or Battery
    • Internal Loop Compensation
    • Internal Soft Start
  • Safety
    • Input Overvoltage Protection (OVP)
    • Dynamic Power Management (DPM) with Status Indicator
    • Programmable Inrush Adapter Power (ACOP) and Overcurrent (ACOC) Limits
    • Reverse-Conduction Protection Input FET
    • Battery Thermistor Sense Input (TS) for Charge Qualification
  • Supports Two, Three, or Four Li+ Cells
  • 5-24 V AC/DC-Adapter Operating Range
  • Analog Inputs with Ratiometric Programming via Resistors or DAC/GPIO Host Control
    • Charge Voltage (4-4.512 V/cell)
    • Charge Current (up to 10 A, with 10 m sense resistor)
    • Adapter Current Limit (DPM)
  • Status and Monitoring Outputs
    • AC/DC Adapter Present with Programmable Voltage Threshold
    • DPM Loop Active
    • Current Drawn from Input Source
  • Supports Any Battery Chemistry: Li+, NiCd, NiMH, Lead Acid, etc.
  • Charge Enable
  • 28-pin, 5x5-mm QFN package
  • Energy Star Low Iq
    • < 10 µA Off-State Battery Discharge Current
    • < 1.5 mA Off-State Input Qiescent Current
  • APPLICATIONS
    • Notebook and Ultra-Mobile Computers
    • Portable Data-Capture Terminals
    • Portable Printers
    • Medical Diagnostics Equipment
    • Battery Bay Chargers
    • Battery Back-up Systems
  • NMOS-NMOS Synchronous Buck Converter with 300 kHz Frequency and >95% Efficiency
  • 30-ns Minimum Driver Dead-time and 99.5% Maximum Effective Duty Cycle
  • High-Accuracy Voltage and Current Regulation
    • ±0.5% Charge Voltage Accuracy
    • ±3% Charge Current Accuracy
    • ±3% Adapter Current Accuracy
    • ±2% Input Current Sense Amp Accuracy
  • Integration
    • Automatic System Power Selection From AC/DC Adapter or Battery
    • Internal Loop Compensation
    • Internal Soft Start
  • Safety
    • Input Overvoltage Protection (OVP)
    • Dynamic Power Management (DPM) with Status Indicator
    • Programmable Inrush Adapter Power (ACOP) and Overcurrent (ACOC) Limits
    • Reverse-Conduction Protection Input FET
    • Battery Thermistor Sense Input (TS) for Charge Qualification
  • Supports Two, Three, or Four Li+ Cells
  • 5-24 V AC/DC-Adapter Operating Range
  • Analog Inputs with Ratiometric Programming via Resistors or DAC/GPIO Host Control
    • Charge Voltage (4-4.512 V/cell)
    • Charge Current (up to 10 A, with 10 m sense resistor)
    • Adapter Current Limit (DPM)
  • Status and Monitoring Outputs
    • AC/DC Adapter Present with Programmable Voltage Threshold
    • DPM Loop Active
    • Current Drawn from Input Source
  • Supports Any Battery Chemistry: Li+, NiCd, NiMH, Lead Acid, etc.
  • Charge Enable
  • 28-pin, 5x5-mm QFN package
  • Energy Star Low Iq
    • < 10 µA Off-State Battery Discharge Current
    • < 1.5 mA Off-State Input Qiescent Current
  • APPLICATIONS
    • Notebook and Ultra-Mobile Computers
    • Portable Data-Capture Terminals
    • Portable Printers
    • Medical Diagnostics Equipment
    • Battery Bay Chargers
    • Battery Back-up Systems

The bq24750A is a high-efficiency, synchronous battery charger with integrated compensation and system power selector logic, offering low component count for space-constrained multi-chemistry battery charging applications. Ratiometric charge current and voltage programming allows high regulation accuracies, and can be either hardwired with resistors or programmed by the system power-management microcontroller using a DAC or GPIOs.

The bq24750A charges two, three, or four series Li+ cells, supporting up to 10 A of charge current, and is available in a 28-pin, 5x5-mm QFN package.

The bq24750A controls external switches to prevent battery discharge back to the input, connect the adapter to the system, and to connect the battery to the system using 6-V gate drives for better system efficiency. For maximum system safety, inrush-power limiting provides instantaneous response to high input voltage multiplied by current. This AC Over-Power protection (ACOP) feature limits the input-switch power to the programmed level on the ACOP pin, and latches off if the high-power condition persists to prevent overheating.

The bq24750A features Dynamic Power Management (DPM) and input power limiting. These features reduce battery charge current when the input power limit is reached to avoid overloading the AC adapter when supplying the load and the battery charger simultaneously. A highly-accurate current-sense amplifier enables precise measurement of input current from the AC adapter to monitor the overall system power.

The bq24750A is a high-efficiency, synchronous battery charger with integrated compensation and system power selector logic, offering low component count for space-constrained multi-chemistry battery charging applications. Ratiometric charge current and voltage programming allows high regulation accuracies, and can be either hardwired with resistors or programmed by the system power-management microcontroller using a DAC or GPIOs.

The bq24750A charges two, three, or four series Li+ cells, supporting up to 10 A of charge current, and is available in a 28-pin, 5x5-mm QFN package.

The bq24750A controls external switches to prevent battery discharge back to the input, connect the adapter to the system, and to connect the battery to the system using 6-V gate drives for better system efficiency. For maximum system safety, inrush-power limiting provides instantaneous response to high input voltage multiplied by current. This AC Over-Power protection (ACOP) feature limits the input-switch power to the programmed level on the ACOP pin, and latches off if the high-power condition persists to prevent overheating.

The bq24750A features Dynamic Power Management (DPM) and input power limiting. These features reduce battery charge current when the input power limit is reached to avoid overloading the AC adapter when supplying the load and the battery charger simultaneously. A highly-accurate current-sense amplifier enables precise measurement of input current from the AC adapter to monitor the overall system power.
filter 查找其他 电池充电器 IC
下载 观看带字幕的视频 视频

技术文档

star =有关此产品的 TI 精选热门文档
未找到结果。请清除搜索并重试。
查看全部 3
类型 标题 下载最新的英语版本 日期
* 数据表 Host-controlled Multi-chemistry Battery Charger w/Integrated Sys Power Selector 数据表 (Rev. A) 2009年 3月 12日
模拟设计期刊 Q4 2009 Issue Analog Applications Journal 2018年 9月 24日
EVM 用户指南 bq24750/50A/51/51A/51B/52/53 EVM (HPA207) For Multi Cell Synchronous (Rev. D) 2010年 3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）。

封装 引脚 CAD 符号、封装和 3D 模型
VQFN (RHD) 28 Ultra Librarian
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

推荐产品可能包含与 TI 此产品相关的参数、评估模块或参考设计。

支持和培训

视频