ホーム バッテリ管理 IC バッテリ・チャージャ IC
ホーム
バッテリ管理 IC
バッテリ・チャージャ IC

BQ24765

アクティブ

複数の FET 内蔵、SMBus、2 ～ 4 セル、降圧バッテリ充電コントローラ

ご注文はこちら
データシート

BQ24765

アクティブ
データシート ご注文はこちら

製品詳細

Number of series cells 2, 3, 4 Charge current (max) (A) 10 Vin (max) (V) 24 Cell chemistry Lead Acid, Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4, NiCd, NiMH Battery charge voltage (min) (V) 1.024 Battery charge voltage (max) (V) 19.2 Absolute max Vin (max) (V) 30 Control topology Switch-Mode Buck Control interface SMBus Features IC thermal regulation, IINDPM (Input current limit), Power Path Vin (min) (V) 7 Rating Catalog Operating temperature range (°C) -40 to 155
Number of series cells 2, 3, 4 Charge current (max) (A) 10 Vin (max) (V) 24 Cell chemistry Lead Acid, Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4, NiCd, NiMH Battery charge voltage (min) (V) 1.024 Battery charge voltage (max) (V) 19.2 Absolute max Vin (max) (V) 30 Control topology Switch-Mode Buck Control interface SMBus Features IC thermal regulation, IINDPM (Input current limit), Power Path Vin (min) (V) 7 Rating Catalog Operating temperature range (°C) -40 to 155
VQFN (RUV) 34 24.5 mm² 7 x 3.5
  • Integrated Power MOSFETs, NMOS-NMOS,
    Synchronous Buck Converter
  • >95% Efficiency
  • Frequency 700kHz Allows Smaller Inductor (5 mm
    × 5 mm)
  • Thermal Regulation Loop for Safety, Limit TJ =
    120°C
  • Adaptive 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
    • Integrated Power MOSFETs
    • Input Current Comparator
    • Internal Soft-Start
  • Safety
    • Thermal Regulation Loop and Thermal
      Shutdown
    • Dynamic Power Management (DPM)
    • Power FETs Over Current Protection
  • 7 V–24 V AC/DC-Adapter Operating Range
  • Simplified SMBus Control
    • Charge Voltage DAC (1.024 V–19.2 V)
    • Charge Current DAC (128 mA–8.064 A)
    • Adapter Current Limit DPM DAC (256
      mA–11.008 A)
  • Status and Monitoring Outputs
    • AC/DC Adapter Present With Adjustable
      Voltage Threshold
    • Input Current Comparator, With Adjustable
      Threshold and Hysteresis
    • Current Sense Amplifier for Current Drawn
      From Input Source
  • Charge Any Battery Chemistry: Li+, LiFePO4,
    NiCd, NiMH, Lead Acid (2, 3, and 4 Li-Ion Cells)
  • Charge Enable Pin (CE)
  • Energy Star Low Iq
    • < 10-µA Battery Current with Adapter
      Removed
    • < 1 mA Input DCINA Current When Adapter
      Present and Charge Disabled
  • 34-pin, 3.50 mm × 7.00 mm QFN Package
  • APPLICATIONS
    • Notebook and Ultra-Mobile Computers
    • Portable Data-Capture Terminals
    • Portable Printers
    • Medical Diagnostics Equipment
    • Battery Bay Chargers
    • Battery Back-up Systems

All other trademarks are the property of their respective owners
  • Integrated Power MOSFETs, NMOS-NMOS,
    Synchronous Buck Converter
  • >95% Efficiency
  • Frequency 700kHz Allows Smaller Inductor (5 mm
    × 5 mm)
  • Thermal Regulation Loop for Safety, Limit TJ =
    120°C
  • Adaptive 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
    • Integrated Power MOSFETs
    • Input Current Comparator
    • Internal Soft-Start
  • Safety
    • Thermal Regulation Loop and Thermal
      Shutdown
    • Dynamic Power Management (DPM)
    • Power FETs Over Current Protection
  • 7 V–24 V AC/DC-Adapter Operating Range
  • Simplified SMBus Control
    • Charge Voltage DAC (1.024 V–19.2 V)
    • Charge Current DAC (128 mA–8.064 A)
    • Adapter Current Limit DPM DAC (256
      mA–11.008 A)
  • Status and Monitoring Outputs
    • AC/DC Adapter Present With Adjustable
      Voltage Threshold
    • Input Current Comparator, With Adjustable
      Threshold and Hysteresis
    • Current Sense Amplifier for Current Drawn
      From Input Source
  • Charge Any Battery Chemistry: Li+, LiFePO4,
    NiCd, NiMH, Lead Acid (2, 3, and 4 Li-Ion Cells)
  • Charge Enable Pin (CE)
  • Energy Star Low Iq
    • < 10-µA Battery Current with Adapter
      Removed
    • < 1 mA Input DCINA Current When Adapter
      Present and Charge Disabled
  • 34-pin, 3.50 mm × 7.00 mm QFN Package
  • APPLICATIONS
    • Notebook and Ultra-Mobile Computers
    • Portable Data-Capture Terminals
    • Portable Printers
    • Medical Diagnostics Equipment
    • Battery Bay Chargers
    • Battery Back-up Systems

All other trademarks are the property of their respective owners

The bq24765 is a high-efficiency, synchronous battery charger with two integrated 30-mΩ NMOS power MOSFETs, and an integrated input current comparator, offering low component count for space-constraint, multi-chemistry battery charging applications. Input current, charge current, and charge voltage DACs allow for very high regulation accuracies that can be easily programmed by the system power management micro-controller using SMBus. The bq24765 has switching frequency of 700 kHz. The bq24765 charges 2, 3, or 4 series Li+ cells, and is available in a 34-pin, 3.50 mm × 7.00 mm VQFN package.

The bq24765 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 adaptor when supplying the load and the battery charger simultaneously. A high-accuracy current sense amplifier enables accurate measurement of input current from the AC adapter, allowing monitoring the overall system power. If the adapter current is above the programmed low-power threshold, a signal is sent to host so that the system optimizes its power performance according to what is available from the adapter. An integrated comparator allows monitoring the input current through the current sense amplifier, and indicating when the input current exceeds a programmable threshold limit. The bq24765 features a thermal regulation loop to reduce battery charge current when the Tj limit is reached. This feature protects internal power FETs from overheating when charging with high current.

The bq24765 is a high-efficiency, synchronous battery charger with two integrated 30-mΩ NMOS power MOSFETs, and an integrated input current comparator, offering low component count for space-constraint, multi-chemistry battery charging applications. Input current, charge current, and charge voltage DACs allow for very high regulation accuracies that can be easily programmed by the system power management micro-controller using SMBus. The bq24765 has switching frequency of 700 kHz. The bq24765 charges 2, 3, or 4 series Li+ cells, and is available in a 34-pin, 3.50 mm × 7.00 mm VQFN package.

The bq24765 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 adaptor when supplying the load and the battery charger simultaneously. A high-accuracy current sense amplifier enables accurate measurement of input current from the AC adapter, allowing monitoring the overall system power. If the adapter current is above the programmed low-power threshold, a signal is sent to host so that the system optimizes its power performance according to what is available from the adapter. An integrated comparator allows monitoring the input current through the current sense amplifier, and indicating when the input current exceeds a programmable threshold limit. The bq24765 features a thermal regulation loop to reduce battery charge current when the Tj limit is reached. This feature protects internal power FETs from overheating when charging with high current.
open-in-new その他の バッテリ・チャージャ IC を検索
ダウンロード 字幕付きのビデオを表示 ビデオ

技術資料

star =TI が選定したこの製品の主要ドキュメント
結果が見つかりませんでした。検索条件をクリアしてから、再度検索を試してください。
4 をすべて表示
種類 タイトル 最新の英語版をダウンロード 日付
* データシート bq24765 SMBus-Controlled Multi-Chemistry Battery Charger With Integrated Power MOSFETs データシート (Rev. A) PDF | HTML 2015年 11月 25日
セレクション・ガイド 電源 IC セレクション・ガイド 2018 (Rev. R 翻訳版) 英語版 (Rev.R) 2018年 9月 13日
ユーザー・ガイド bq24765 (HPA349) user's guide (Rev. A) 2013年 10月 4日
アプリケーション・ノート How to Review a Multicell Switching Charger Schematic 2011年 9月 21日

設計と開発

その他のアイテムや必要なリソースを参照するには、以下のタイトルをクリックして詳細ページをご覧ください。

評価ボード

BQ24765EVM — BQ24765 評価モジュール、SMBus 制御バッテリー・チャージャ / 内蔵 FET 用

The bq24765 evaluation module is a complete charger module for evaluating a multi cell integrated power MOSFETs synchronous notebook charge using the bq24765 devices. It is designed to deliver up to 8A of charge current to Li-Ion or Li-Pol applications. The charge current is programmable by (...)

ユーザー ガイド: PDF
TI.com で取り扱いなし
サポート・ソフトウェア

SLVC309 — bq24765EVM software

サポート対象の製品とハードウェア

サポート対象の製品とハードウェア

製品
バッテリ・チャージャ IC
BQ24765 — 複数の FET 内蔵、SMBus、2 ～ 4 セル、降圧バッテリ充電コントローラ
ハードウェア開発
評価ボード
BQ24765EVM — BQ24765 評価モジュール、SMBus 制御バッテリー・チャージャ / 内蔵 FET 用
ダウンロード
パッケージ ピン数 ダウンロード
VQFN (RUV) 34 オプションの表示
TI の評価品に関する標準契約約款が適用されます。

購入と品質

記載されている情報：
  • RoHS
  • REACH
  • デバイスのマーキング
  • リード端子の仕上げ / ボールの原材料
  • MSL 定格 / ピーク リフロー
  • MTBF/FIT 推定値
  • 材質成分
  • 認定試験結果
  • 継続的な信頼性モニタ試験結果
記載されている情報：
  • ファブの拠点
  • 組み立てを実施した拠点

推奨製品には、この TI 製品に関連するパラメータ、評価基板、またはリファレンス デザインが存在する可能性があります。

サポートとトレーニング

TI E2E™ フォーラムでは、TI のエンジニアからの技術サポートを提供

投稿されたすべてのフォーラムトピック (英語) を表示

コンテンツは、TI 投稿者やコミュニティ投稿者によって「現状のまま」提供されるもので、TI による仕様の追加を意図するものではありません。使用条件をご確認ください。

TI 製品の品質、パッケージ、ご注文に関するお問い合わせは、TI サポートをご覧ください。​​​​​​​​​​​​​​

ビデオ