ホーム パワー・マネージメント バッテリ管理 IC バッテリ・チャージャ IC

BQ25708

アクティブ

SMBus マルチケミストリ・バッテリ昇降圧型充電コントローラ

製品詳細

Number of series cells 1, 2, 3, 4 Charge current (max) (A) 8.128 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-boost Control interface SMBus Features BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, ICO (Input Current Optimization), IINDPM (Input current limit), Input OVP, Integrated ADC, Power Path, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 3.5 Rating Catalog Operating temperature range (°C) -40 to 85
Number of series cells 1, 2, 3, 4 Charge current (max) (A) 8.128 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-boost Control interface SMBus Features BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, ICO (Input Current Optimization), IINDPM (Input current limit), Input OVP, Integrated ADC, Power Path, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 3.5 Rating Catalog Operating temperature range (°C) -40 to 85
WQFN (RSN) 32 16 mm² 4 x 4
  • Charge 1- to 4-Cell Battery From Wide Range of Input Sources
    • 3.5-V to 24-V Input Operating Voltage
    • Supports USB2.0, USB 3.0, USB 3.1 (Type C), and USB_PD Input Current Settings
    • Seamless Transition Between Buck and Boost Operation
    • Input current and Voltage Regulation (IDPM and VDPM) Against Source Overload
  • Power/Current Monitor for CPU Throttling
    • Comprehensive PROCHOT Profile, IMVP8 Compliant
    • Input and Battery Current Monitor
    • System Power Monitor, IMVP8 Compliant
  • Narrow-VDC (NVDC) Power Path Management
    • Instant-On With No Battery or Deeply Discharged Battery
    • Battery Supplements System When Adapter is Fully-Loaded
    • Ideal Diode Operation in Supplement Mode
  • 800-kHz or 1.2-MHz Programmable Switching Frequency for 1-µH to 3.3-µH Inductor
  • Host Control Interface for Flexible System Configuration
    • SMBus Port for Optimal System Performance and Status Reporting
    • Hardware Pin to Set Input Current Limit Without EC Control
  • Integrated ADC to Monitor Voltage, Current and Power
  • High Accuracy Regulation and Monitor
    • ±0.5% Charge Voltage Regulation
    • ±2% Input/Charge Current Regulation
    • ±2% Input/Charge Current Monitor
    • ±5% Power Monitor
  • Safety
    • Thermal Shutdown
    • Input, System, Battery Overvoltage Protection
    • MOSFET Inductor Overcurrent Protection
  • Low Battery Quiescent Current
  • Input Current Optimizer (ICO) to Extract Max Input Power
  • Charge any Battery Chemistry: Li+, LiFePO4, NiCd, NiMH, Lead Acid
  • Package: 32-Pin 4 × 4 WQFN
  • Charge 1- to 4-Cell Battery From Wide Range of Input Sources
    • 3.5-V to 24-V Input Operating Voltage
    • Supports USB2.0, USB 3.0, USB 3.1 (Type C), and USB_PD Input Current Settings
    • Seamless Transition Between Buck and Boost Operation
    • Input current and Voltage Regulation (IDPM and VDPM) Against Source Overload
  • Power/Current Monitor for CPU Throttling
    • Comprehensive PROCHOT Profile, IMVP8 Compliant
    • Input and Battery Current Monitor
    • System Power Monitor, IMVP8 Compliant
  • Narrow-VDC (NVDC) Power Path Management
    • Instant-On With No Battery or Deeply Discharged Battery
    • Battery Supplements System When Adapter is Fully-Loaded
    • Ideal Diode Operation in Supplement Mode
  • 800-kHz or 1.2-MHz Programmable Switching Frequency for 1-µH to 3.3-µH Inductor
  • Host Control Interface for Flexible System Configuration
    • SMBus Port for Optimal System Performance and Status Reporting
    • Hardware Pin to Set Input Current Limit Without EC Control
  • Integrated ADC to Monitor Voltage, Current and Power
  • High Accuracy Regulation and Monitor
    • ±0.5% Charge Voltage Regulation
    • ±2% Input/Charge Current Regulation
    • ±2% Input/Charge Current Monitor
    • ±5% Power Monitor
  • Safety
    • Thermal Shutdown
    • Input, System, Battery Overvoltage Protection
    • MOSFET Inductor Overcurrent Protection
  • Low Battery Quiescent Current
  • Input Current Optimizer (ICO) to Extract Max Input Power
  • Charge any Battery Chemistry: Li+, LiFePO4, NiCd, NiMH, Lead Acid
  • Package: 32-Pin 4 × 4 WQFN

The bq25708 is a synchronous NVDC battery buck-boost charge controller, offering low component count, high efficiency solution for space-constraint, multi-chemistry battery charging applications.

The NVDC-1 configuration allows the system to be regulated at battery voltage, but not drop below system minimum voltage. The system keeps operating even when the battery is completely discharged or removed. When load power exceeds input source rating, the battery goes into supplement mode and prevents the system from crashing.

The bq25708 charges battery from a wide range of input sources including USB adapter, high voltage USB PD sources and traditional adapters.

During power up, the charger sets converter to buck, boost or buck-boost configuration based on input source and battery conditions. The charger automatically transits among buck, boost and buck-boost configuration without host control.

The bq25708 monitors adapter current, battery current and system power. The flexibly programmed PROCHOT output goes directly to CPU for throttle back when needed.

The bq25708 is a synchronous NVDC battery buck-boost charge controller, offering low component count, high efficiency solution for space-constraint, multi-chemistry battery charging applications.

The NVDC-1 configuration allows the system to be regulated at battery voltage, but not drop below system minimum voltage. The system keeps operating even when the battery is completely discharged or removed. When load power exceeds input source rating, the battery goes into supplement mode and prevents the system from crashing.

The bq25708 charges battery from a wide range of input sources including USB adapter, high voltage USB PD sources and traditional adapters.

During power up, the charger sets converter to buck, boost or buck-boost configuration based on input source and battery conditions. The charger automatically transits among buck, boost and buck-boost configuration without host control.

The bq25708 monitors adapter current, battery current and system power. The flexibly programmed PROCHOT output goes directly to CPU for throttle back when needed.

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技術資料

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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 bq25708 SMBus Multi-Chemistry Battery Buck-Boost Charge Controller With System Power Monitor and Processor Hot Monitor データシート PDF | HTML 2017年 11月 14日
アプリケーション・ノート Layout Guide for Buck-Boost Charger BQ257XX Series PDF | HTML 2024年 1月 30日
アプリケーション・ノート Autonomous Smart Battery Guide PDF | HTML 2021年 10月 15日

設計と開発

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アプリケーション・ソフトウェアとフレームワーク

BQSTUDIO — Battery Management Studio (bqStudio:バッテリ管理ツール) ソフトウェア

bqStudio (Battery Management Studio) は、TI のバッテリ管理製品を使用する評価、設計、設計、構成、テスト、その他の業務に関連するプロセスを支援する、一連の高信頼性ツールで構成された包括的なスイートです。これは、リアルタイム監視のサポート、グラフ作成、ロギング、コマンドを送信するための簡易インターフェイス、直接の低水準通信と I/O などレジスタやデータ (...)
パッケージ ピン数 ダウンロード
WQFN (RSN) 32 オプションの表示

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

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