可提供此產(chǎn)品的更新版本

功能優(yōu)于所比較器件的普遍直接替代產(chǎn)品
BQ24725A 正在供貨 具有 N 溝道功率 MOSFET 選擇器的 SMBus 1 至 4 節(jié)降壓電池充電控制器 BQ24725A is P2P option that supports 1 cell batteries.

產(chǎn)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.
下載 觀看帶字幕的視頻 視頻

技術(shù)文檔

star =有關(guān)此產(chǎn)品的 TI 精選熱門文檔
未找到結(jié)果。請(qǐng)清除搜索并重試。
查看全部 2
頂層文檔 類型 標(biāo)題 格式選項(xiàng) 下載最新的英語(yǔ)版本 日期
* 數(shù)據(jù)表 2-4Cell Li+ Battery SMBus Charge Controller with N-Channel Power MOSFET Selector 數(shù)據(jù)表 (Rev. A) 2010年 11月 9日
應(yīng)用手冊(cè) How to Review a Multicell Switching Charger Schematic 2011年 9月 21日

設(shè)計(jì)與開(kāi)發(fā)

如需其他信息或資源，請(qǐng)點(diǎn)擊以下任一標(biāo)題進(jìn)入詳情頁(yè)面查看（如有）。

支持軟件

SLUC202 — bq24725 EVM Setup

支持的產(chǎn)品和硬件

支持的產(chǎn)品和硬件
計(jì)算工具

SLUC203 — bq24725_725A_726_707_73x Calculation Tool

支持的產(chǎn)品和硬件

支持的產(chǎn)品和硬件
封裝 引腳 CAD 符號(hào)、封裝和 3D 模型
VQFN (RGR) 20 Ultra Librarian

訂購(gòu)和質(zhì)量

包含信息：
  • RoHS
  • REACH
  • 器件標(biāo)識(shí)
  • 引腳鍍層/焊球材料
  • MSL 等級(jí)/回流焊峰值溫度
  • MTBF/時(shí)基故障估算
  • 材料成分
  • 鑒定摘要
  • 持續(xù)可靠性監(jiān)測(cè)
包含信息：
  • 制造廠地點(diǎn)
  • 封裝廠地點(diǎn)

推薦產(chǎn)品可能包含與 TI 此產(chǎn)品相關(guān)的參數(shù)、評(píng)估模塊或參考設(shè)計(jì)。

支持和培訓(xùn)

可獲得 TI 工程師技術(shù)支持的 TI E2E? 論壇

所有內(nèi)容均由 TI 和社區(qū)貢獻(xiàn)者按“原樣”提供，并不構(gòu)成 TI 規(guī)范。請(qǐng)參閱使用條款。

如果您對(duì)質(zhì)量、包裝或訂購(gòu) TI 產(chǎn)品有疑問(wèn)，請(qǐng)參閱 TI 支持。??????????????

視頻