BQ25895M

アクティブ

3.1A 電流増幅機能と HVDCP (高電圧専用充電ポート) 搭載、I2C、1 セル、5A 降圧バッテリ チャージャ

製品詳細

Rating Catalog Number of series cells 1 Cell chemistry Li-Ion/Li-Polymer Charge current (max) (A) 5 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, USB D+/D-/BC1.2 integrated, USB OTG integrated Vin (min) (V) 3.9 Vin (max) (V) 14 Absolute max Vin (max) (V) 22 Control topology Switch-Mode Buck Battery charge voltage (min) (V) 3.84 Battery charge voltage (max) (V) 4.6 Control interface I2C Operating temperature range (°C) -40 to 85
Rating Catalog Number of series cells 1 Cell chemistry Li-Ion/Li-Polymer Charge current (max) (A) 5 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, USB D+/D-/BC1.2 integrated, USB OTG integrated Vin (min) (V) 3.9 Vin (max) (V) 14 Absolute max Vin (max) (V) 22 Control topology Switch-Mode Buck Battery charge voltage (min) (V) 3.84 Battery charge voltage (max) (V) 4.6 Control interface I2C Operating temperature range (°C) -40 to 85
WQFN (RTW) 24 16 mm² (4 mm × 4 mm)
  • High efficiency 1.5-MHz switch mode buck charge
    • 93% charge efficiency at 2 A and 91% charge efficiency at 3 A charge current
    • Optimize for high voltage input (9 V / 12 V)
    • Low power PFM mode for light load operations
  • Boost mode operation with adjustable output from 4.5 V to 5.5 V
    • Selectable 500-KHz / 1.5-MHz boost converter with up-to 3.1 A output
    • 93% Boost efficiency at 5 V at 1 A output
    • Support down-to 2.5V battery
    • Support PWM only or PFM/PWM control for light load efficiency
  • Integrated control to switch between charge and boost mode
  • Single input to support USB input and adjustable high voltage adapters
    • Support 3.9-V to 14-V input voltage range
    • Input current limit (100 mA to 3.25 A with 50-mA resolution) to support USB2.0, USB3.0 standard and high voltage adapters
    • Maximum power tracking by input voltage limit up-to 14V for wide range of adapters
    • Auto detect USB SDP, CDP, DCP, and non-standard adapters
  • Input current optimizer (ICO) to maximize input power without overloading adapters
  • Resistance compensation (IRCOMP) from charger output to cell terminal
  • Highest battery discharge efficiency with 11-mΩ battery discharge MOSFET up to 9 A
  • Integrated ADC for system monitor (voltage, temperature, charge current)
  • BATFET Control to support ship mode, wake up, and full system reset
  • Flexible autonomous and I2C mode for optimal system performance
  • High integration includes all MOSFETs, current sensing and loop compensation
  • 12-µA Low battery leakage current to support ship mode
  • High accuracy
    • ±0.5% Charge voltage regulation
    • ±5% Charge current regulation
    • ±7.5% Input current regulation
  • Safety
    • Battery temperature sensing for charge and boost mode
    • Thermal regulation and thermal shutdown
  • High efficiency 1.5-MHz switch mode buck charge
    • 93% charge efficiency at 2 A and 91% charge efficiency at 3 A charge current
    • Optimize for high voltage input (9 V / 12 V)
    • Low power PFM mode for light load operations
  • Boost mode operation with adjustable output from 4.5 V to 5.5 V
    • Selectable 500-KHz / 1.5-MHz boost converter with up-to 3.1 A output
    • 93% Boost efficiency at 5 V at 1 A output
    • Support down-to 2.5V battery
    • Support PWM only or PFM/PWM control for light load efficiency
  • Integrated control to switch between charge and boost mode
  • Single input to support USB input and adjustable high voltage adapters
    • Support 3.9-V to 14-V input voltage range
    • Input current limit (100 mA to 3.25 A with 50-mA resolution) to support USB2.0, USB3.0 standard and high voltage adapters
    • Maximum power tracking by input voltage limit up-to 14V for wide range of adapters
    • Auto detect USB SDP, CDP, DCP, and non-standard adapters
  • Input current optimizer (ICO) to maximize input power without overloading adapters
  • Resistance compensation (IRCOMP) from charger output to cell terminal
  • Highest battery discharge efficiency with 11-mΩ battery discharge MOSFET up to 9 A
  • Integrated ADC for system monitor (voltage, temperature, charge current)
  • BATFET Control to support ship mode, wake up, and full system reset
  • Flexible autonomous and I2C mode for optimal system performance
  • High integration includes all MOSFETs, current sensing and loop compensation
  • 12-µA Low battery leakage current to support ship mode
  • High accuracy
    • ±0.5% Charge voltage regulation
    • ±5% Charge current regulation
    • ±7.5% Input current regulation
  • Safety
    • Battery temperature sensing for charge and boost mode
    • Thermal regulation and thermal shutdown

The BQ25895M is a highly-integrated 5-A switch-mode battery charge management and system power path management device for single cell Li-Ion and Li-polymer battery. The devices support high input voltage fast charging. The low impedance power path optimizes switch-mode operation efficiency, reduces battery charging time and extends battery life during discharging phase. The I2C Serial interface with charging and system settings makes the device a truly flexible solution.

The BQ25895M is a highly-integrated 5-A switch-mode battery charge management and system power path management device for single cell Li-Ion and Li-polymer battery. The devices support high input voltage fast charging. The low impedance power path optimizes switch-mode operation efficiency, reduces battery charging time and extends battery life during discharging phase. The I2C Serial interface with charging and system settings makes the device a truly flexible solution.

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技術資料

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上位の文書 タイプ タイトル フォーマットオプション 最新の英語版をダウンロード 日付
* データシート BQ25895M I2C Controlled Single Cell Fast Charger with MaxChargeTM Technology for High Input Voltage and Adjustable Voltage 3.1 A Boost Operation データシート (Rev. C) PDF | HTML 2022/10/17
アプリケーション・ノート Extracting Maximum Power from an Adapter with Input Current Optimization Feature (Rev. C) 2019/08/02
アプリケーション・ノート Dynamic Power-Path Mgmt & Dynamic Power Mgmt (Rev. A) 2018/05/01
アプリケーション・ノート Battery Charger Overload Protection in Boost Mode Operation 2017/07/12
アプリケーション・ノート Port Detection for Power Banks 2016/04/08
アプリケーション・ノート Using the bq2589x ADC to Estimate Battery Temperature 2015/05/04
アナログ デザイン ジャーナル Extract maximum power from the supply when charging a battery 2014/04/11
アナログ デザイン ジャーナル Dynamic power management for faster, more efficient battery charging 2013/10/28

設計と開発

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評価ボード

BQ25895MEVM-664 — bq25895M 完全対応型チャージャ評価基板

bq25895M 評価基板 (EVM) は、1 セルのリチウムイオンおよびリチウムポリマセル向けに、幅広いスマートフォンおよびタブレット用途で使用される、高集積スイッチモードバッテリ充電管理およびシステム電源パス管理デバイスを評価するための、完全な充電モジュールです。

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WQFN (RTW) 24 Ultra Librarian

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