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電池管理 IC
電池充電器 IC

BQ25185

現行

具電源路徑和太陽能輸入支援的 1 芯 1A 獨立線性電池充電器

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產品規格表

BQ25185

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Number of series cells 1 Cell chemistry Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4 Charge current (max) (A) 1 Features BAT temp thermistor monitoring (JEITA profile), BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, IINDPM (Input current limit), Input OVP, Power Path, Solar input/MPPT, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 3 Vin (max) (V) 18 Absolute max Vin (max) (V) 25 Control topology Linear Battery charge voltage (min) (V) 3.6 Battery charge voltage (max) (V) 4.65 Control interface Standalone (RC-Settable) Operating temperature range (°C) -40 to 125
Rating Catalog Number of series cells 1 Cell chemistry Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4 Charge current (max) (A) 1 Features BAT temp thermistor monitoring (JEITA profile), BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, IINDPM (Input current limit), Input OVP, Power Path, Solar input/MPPT, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 3 Vin (max) (V) 18 Absolute max Vin (max) (V) 25 Control topology Linear Battery charge voltage (min) (V) 3.6 Battery charge voltage (max) (V) 4.65 Control interface Standalone (RC-Settable) Operating temperature range (°C) -40 to 125
WSON (DLH) 10 4.4 mm² (2.2 mm × 2 mm)
  • 1A linear battery charger
    • 3.0V to 18V input voltage operating range
    • 25V tolerant input voltage
    • External resistor programmable operation
      • ILIM/VSET pin sets battery regulation voltage to 3.6V, 3.65V, 4.02V, 4.1V, 4.2V, 4.35V, or 4.4V
      • ILIM/VSET pin sets input current limit to 100mA, 500mA, or 1100mA
      • ISET pin sets charge current from 5mA to 1A
    • Supports Li-ion, Li-poly, and LiFePO4 chemistries
    • 115mΩ battery FET on-resistance
    • Supports up to 3.125A discharge current for high system loads
  • Power path management for powering the system and charging the battery
    • Regulated system voltage (SYS) at 4.5V
    • Configurable input current limit
    • Supports USB suspend mode
    • Battery tracking input voltage dynamic power management (VINDPM) for high-impedance input sources
    • Dynamic power path management optimizes charging from weak adapters
  • Ultra-low quiescent current
    • 4µA in battery-only mode
    • 30µA input adapter IQ in sleep mode
    • 3.2µA battery discharge current in factory mode
  • Integrated fault protection
    • Input overvoltage protection (VIN_OVP)
    • Battery undervoltage protection (BUVLO)
    • Battery short protection (BATSC)
    • Battery overcurrent protection (BATOCP)
    • Input current limit protection (ILIM)
    • Thermal regulation (TREG) and thermal shutdown (TSHUT)
    • Battery thermal fault protection (TS)
    • Safety timer fault

    • System short protection

    • System overvoltage protection

    • Short and open protection on the ISET and ILIM/VSET pins
  • 1A linear battery charger
    • 3.0V to 18V input voltage operating range
    • 25V tolerant input voltage
    • External resistor programmable operation
      • ILIM/VSET pin sets battery regulation voltage to 3.6V, 3.65V, 4.02V, 4.1V, 4.2V, 4.35V, or 4.4V
      • ILIM/VSET pin sets input current limit to 100mA, 500mA, or 1100mA
      • ISET pin sets charge current from 5mA to 1A
    • Supports Li-ion, Li-poly, and LiFePO4 chemistries
    • 115mΩ battery FET on-resistance
    • Supports up to 3.125A discharge current for high system loads
  • Power path management for powering the system and charging the battery
    • Regulated system voltage (SYS) at 4.5V
    • Configurable input current limit
    • Supports USB suspend mode
    • Battery tracking input voltage dynamic power management (VINDPM) for high-impedance input sources
    • Dynamic power path management optimizes charging from weak adapters
  • Ultra-low quiescent current
    • 4µA in battery-only mode
    • 30µA input adapter IQ in sleep mode
    • 3.2µA battery discharge current in factory mode
  • Integrated fault protection
    • Input overvoltage protection (VIN_OVP)
    • Battery undervoltage protection (BUVLO)
    • Battery short protection (BATSC)
    • Battery overcurrent protection (BATOCP)
    • Input current limit protection (ILIM)
    • Thermal regulation (TREG) and thermal shutdown (TSHUT)
    • Battery thermal fault protection (TS)
    • Safety timer fault

    • System short protection

    • System overvoltage protection

    • Short and open protection on the ISET and ILIM/VSET pins

The BQ25185 is a linear battery charger IC optimized for small solution size and low quiescent current to extend battery life. The device is available in a small leadless package with a thermal pad for heat dissipation. The device supports up to 1A charging and system loads up to 3.125A.

The battery is charged using a standard Li-ion or LiFePO4 charging profile with three phases: precharge, constant current, and constant voltage. Thermal regulation provides the maximum charge current while managing the device temperature. The charger is optimized for battery-to-battery charging with 3V minimum input voltage operation and can withstand 25V absolute maximum line transients. The device integrates a single pushbutton input to reduce the total solution footprint.

The BQ25185 is a linear battery charger IC optimized for small solution size and low quiescent current to extend battery life. The device is available in a small leadless package with a thermal pad for heat dissipation. The device supports up to 1A charging and system loads up to 3.125A.

The battery is charged using a standard Li-ion or LiFePO4 charging profile with three phases: precharge, constant current, and constant voltage. Thermal regulation provides the maximum charge current while managing the device temperature. The charger is optimized for battery-to-battery charging with 3V minimum input voltage operation and can withstand 25V absolute maximum line transients. The device integrates a single pushbutton input to reduce the total solution footprint.
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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 BQ25185 1-Cell, 1A Standalone Linear Battery Charger with Power Path, Factory Mode, and Battery Tracking VINDPM datasheet (Rev. A) PDF | HTML 2026/1/9
應用說明 Designing the TS Pin Network for Battery Chargers with Current-Based Battery NTC Temperature Sensing PDF | HTML 2026/6/22
Application brief Using Battery Tracking VINDPM to Make the Most of Solar and High-Impedance Power Sources PDF | HTML 2025/3/25
證書 BQ25185EVM EU Declaration of Conformity (DoC) PDF | HTML 2023/10/26

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開發板

BQ25185EVM — 適用於 1 芯、1-A 獨立線性電池充電器的 BQ25185 評估模組

BQ25185 評估模組 (EVM) 的設計目的在於評估和測試 BQ25185 裝置的各種運作模式。此 EVM 設計為完整的測試友好型平台，並配有視覺指示器。BQ25185 是一款整合式電池充電管理 IC，專為搭載可充電電池的太陽能工業設備設計，整合了以下常見功能：線性充電，穩壓輸出，電池模式和電池追蹤 VINDPM。

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