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BQ24725A 正在供貨 具有 N 溝道功率 MOSFET 選擇器的 SMBus 1 至 4 節降壓電池充電控制器 BQ24725A is P2P option that supports 1 cell batteries.

產品詳情

Rating Catalog Number of series cells 2, 3, 4 Cell chemistry Li-Ion/Li-Polymer Charge current (max) (A) 8 Features Input OVP, Power Path Vin (min) (V) 0 Vin (max) (V) 24 Absolute max Vin (max) (V) 30 Control topology Switch-Mode Buck Battery charge voltage (min) (V) 1.024 Battery charge voltage (max) (V) 19.2 Control interface SMBus Operating temperature range (°C) -40 to 85
Rating Catalog Number of series cells 2, 3, 4 Cell chemistry Li-Ion/Li-Polymer Charge current (max) (A) 8 Features Input OVP, Power Path Vin (min) (V) 0 Vin (max) (V) 24 Absolute max Vin (max) (V) 30 Control topology Switch-Mode Buck Battery charge voltage (min) (V) 1.024 Battery charge voltage (max) (V) 19.2 Control interface SMBus Operating temperature range (°C) -40 to 85
VQFN (RGR) 20 12.25 mm2 3.5 x 3.5
  • SMBus Host-Controlled NMOS-NMOS Synchronous Buck Converter with
    Programmable 615kHz, 750kHz, and 885kHz Switching Frequencies
  • Automatic N-channel MOSFET Selection of System Power Source from
    Adapter or Battery Driven by Internal Charge Pumps
  • Enhanced Safety Features for Over Voltage Protection, Over Current
    Protection, Battery, Inductor and MOSFET Short Circuit Protection
  • Programmable Input Current, Charge Voltage, Charge Current Limits
    • ±0.5% Charge Voltage Accuracy up to 19.2V
    • ±3% Charge Current Accuracy up to 8.128A
    • ±3% Input Current Accuracy up to 8.064A
    • ±2% 20x Adapter Current or Charge Current Amplifier
      Output Accuracy
  • Programmable Battery Depletion Threshold, and Battery LERAN Function
  • Programmable Adapter Detection and Indicator
  • Integrated Soft Start
  • Integrated Loop Compensation
  • Real Time System Control on ILIM pin to Limit Charge Current
  • AC Adapter Operating Range 9V-24V
  • 5μA Off-State Battery Discharge Current
  • 20-pin 3.5 × 3.5 mm2 QFN Package
  • APPLICATIONS
    • Portable Notebook Computers, UMPC, Ultra-Thin Notebook, and Netbook
    • Personal Digital Assistant
    • Handheld Terminal
    • Industrial and Medical Equipment
    • Portable Equipment

PowerPAD is a trademark of Texas Instruments.
  • SMBus Host-Controlled NMOS-NMOS Synchronous Buck Converter with
    Programmable 615kHz, 750kHz, and 885kHz Switching Frequencies
  • Automatic N-channel MOSFET Selection of System Power Source from
    Adapter or Battery Driven by Internal Charge Pumps
  • Enhanced Safety Features for Over Voltage Protection, Over Current
    Protection, Battery, Inductor and MOSFET Short Circuit Protection
  • Programmable Input Current, Charge Voltage, Charge Current Limits
    • ±0.5% Charge Voltage Accuracy up to 19.2V
    • ±3% Charge Current Accuracy up to 8.128A
    • ±3% Input Current Accuracy up to 8.064A
    • ±2% 20x Adapter Current or Charge Current Amplifier
      Output Accuracy
  • Programmable Battery Depletion Threshold, and Battery LERAN Function
  • Programmable Adapter Detection and Indicator
  • Integrated Soft Start
  • Integrated Loop Compensation
  • Real Time System Control on ILIM pin to Limit Charge Current
  • AC Adapter Operating Range 9V-24V
  • 5μA Off-State Battery Discharge Current
  • 20-pin 3.5 × 3.5 mm2 QFN Package
  • APPLICATIONS
    • Portable Notebook Computers, UMPC, Ultra-Thin Notebook, and Netbook
    • Personal Digital Assistant
    • Handheld Terminal
    • Industrial and Medical Equipment
    • Portable Equipment

PowerPAD is a trademark of Texas Instruments.

The bq24725 is a high-efficiency, synchronous battery charger, offering low component count for space-constraint, multi-chemistry battery charging applications.

The bq24725 uses two charge pumps to separately drive n-channel MOSFETs (ACFET, RBFET and BATFET) for automatic system power source selection.

SMBus controlled input current, charge current, and charge voltage DACs allow for high regulation accuracies that can be programmed by the system power management micro-controller.

The bq24725 uses internal input current register or external ILIM pin to throttle down PWM modulation to reduce the charge current.

The bq24725 charges two, three or four series Li+ cells, and is available in a 20-pin, 3.5 × 3.5 mm2 QFN package.

The bq24725 is a high-efficiency, synchronous battery charger, offering low component count for space-constraint, multi-chemistry battery charging applications.

The bq24725 uses two charge pumps to separately drive n-channel MOSFETs (ACFET, RBFET and BATFET) for automatic system power source selection.

SMBus controlled input current, charge current, and charge voltage DACs allow for high regulation accuracies that can be programmed by the system power management micro-controller.

The bq24725 uses internal input current register or external ILIM pin to throttle down PWM modulation to reduce the charge current.

The bq24725 charges two, three or four series Li+ cells, and is available in a 20-pin, 3.5 × 3.5 mm2 QFN package.
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類型 標題 下載最新的英語版本 日期
* 數據表 2-4Cell Li+ Battery SMBus Charge Controller with N-Channel Power MOSFET Selector 數據表 (Rev. A) 2010年 11月 9日
應用手冊 How to Review a Multicell Switching Charger Schematic 2011年 9月 21日

設計和開發

如需其他信息或資源，請點擊以下任一標題進入詳情頁面查看（如有）。

支持軟件

SLUC202 — bq24725 EVM Setup

支持的產品和硬件

支持的產品和硬件

產品
電池充電器 IC
BQ24725 — 具有 N 溝道功率 MOSFET 選擇器的 SMBus 2 至 4 節降壓電池充電控制器
計算工具

SLUC203 — bq24725_725A_726_707_73x Calculation Tool

支持的產品和硬件

支持的產品和硬件

產品
電池充電器 IC
BQ24707 — 具有獨立比較器和高級電路保護的 SMBus 1 至 4 節降壓電池充電控制器 BQ24707A — 具有獨立比較器和高級電路保護的 1 至 4 節鋰離子電池充電控制器 BQ24725 — 具有 N 溝道功率 MOSFET 選擇器的 SMBus 2 至 4 節降壓電池充電控制器 BQ24725A — 具有 N 溝道功率 MOSFET 選擇器的 SMBus 1 至 4 節降壓電池充電控制器 BQ24735 — 用于支持渦輪加速升壓模式的 SMBus 1 至 4 節降壓電池充電控制器
封裝 引腳 CAD 符號、封裝和 3D 模型
VQFN (RGR) 20 Ultra Librarian

訂購和質量

包含信息：
  • RoHS
  • REACH
  • 器件標識
  • 引腳鍍層/焊球材料
  • MSL 等級/回流焊峰值溫度
  • MTBF/時基故障估算
  • 材料成分
  • 鑒定摘要
  • 持續可靠性監測
包含信息：
  • 制造廠地點
  • 封裝廠地點

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