BQ25185

ACTIVO

Cargador de batería lineal independiente de celda única y 1 A con ruta de alimentación y soporte de

Detalles del producto

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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Documentación técnica

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* 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 ene 2026
Application brief Using Battery Tracking VINDPM to Make the Most of Solar and High-Impedance Power Sources PDF | HTML 25 mar 2025
Certificate BQ25185EVM EU Declaration of Conformity (DoC) 26 oct 2023

Diseño y desarrollo

Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

Placa de evaluación

BQ25185EVM — Módulo de evaluación BQ25185 para cargador lineal independiente de 1 A de celda única

El módulo de evaluación (EVM) BQ25185 está diseñado para evaluar y probar los múltiples modos de funcionamiento del dispositivo BQ25185. El módulo de evaluación (EVM) está diseñado para una evaluación completa y fácil de probar con indicadores visuales. El BQ25185 es un circuito integrado (IC) de (...)

Guía del usuario: PDF | HTML
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
WSON (DLH) 10 Ultra Librarian

Pedidos y calidad

Información incluida:
  • RoHS
  • REACH
  • Marcado del dispositivo
  • Acabado de plomo/material de la bola
  • Clasificación de nivel de sensibilidad a la humedad (MSL) / reflujo máximo
  • Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
  • Contenido del material
  • Resumen de calificaciones
  • Monitoreo continuo de confiabilidad
Información incluida:
  • Lugar de fabricación
  • Lugar de ensamblaje

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Soporte y capacitación

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