Produktdetails

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) 25 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) 25 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 x 2
  • 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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Typ Titel Datum
* Data sheet BQ25185 1-Cell, 1A Standalone Linear Battery Charger with Power Path, Factory Mode, and Battery Tracking VINDPM datasheet (Rev. A) PDF | HTML 09 Jan 2026
Application brief Using Battery Tracking VINDPM to Make the Most of Solar and High-Impedance Power Sources PDF | HTML 25 Mär 2025
Certificate BQ25185EVM EU Declaration of Conformity (DoC) 26 Okt 2023

Design und Entwicklung

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Evaluierungsplatine

BQ25185EVM — BQ25185 Evaluierungsmodul für eigenständiges lineares 1 A-Akkuladegerät mit 1 Zelle

Das BQ25185-Evaluierungsmodul (EVM) bietet Unterstützung bei Evaluierung und Testen der verschiedenen Betriebsmodi des Bausteins BQ25185. Das EVM ist für eine vollständige, testfreundliche Evaluierung mit visuellen Anzeigen ausgelegt. Der BQ25185 ist ein integrierter Batterielademanagement-IC, der (...)

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