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BQ25186

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1A I²C-controlled linear battery charger with power path and solar input support

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Data sheet

BQ25186

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Data sheet Order now

Product details

Number of series cells 1 Charge current (max) (A) 1 Vin (max) (V) 18 Cell chemistry Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4 Battery charge voltage (min) (V) 3.6 Battery charge voltage (max) (V) 4.65 Absolute max Vin (max) (V) 25 Control topology Linear Control interface I2C Features BAT temp thermistor monitoring (JEITA 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 Rating Catalog Operating temperature range (°C) -40 to 125
Number of series cells 1 Charge current (max) (A) 1 Vin (max) (V) 18 Cell chemistry Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4 Battery charge voltage (min) (V) 3.6 Battery charge voltage (max) (V) 4.65 Absolute max Vin (max) (V) 25 Control topology Linear Control interface I2C Features BAT temp thermistor monitoring (JEITA 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 Rating Catalog Operating temperature range (°C) -40 to 125
WSON (DLH) 10 4.4 mm² 2.2 x 2
  • 1-A linear battery charger
    • 3.0V to 18V input voltage operating range optimized for battery-to-battery charging and USB adapters
    • 25V tolerant input voltage
    • Configurable battery regulation voltage with 0.5% accuracy from 3.6V to 4.65V in 10mV steps
    • Li-ion, Li-Poly, and LiFePO4 chemistries support
    • 5mA to 1A configurable fast charge current
    • 115mΩ battery FET ON resistance
    • Up to 3.125A discharge current to support high system loads
    • Configurable termination current down to 0.5mA
    • Configurable NTC charging profile thresholds including JEITA support
    • Power cycle and advanced reset mechanism
  • Power path management for powering the system and charging the battery
    • Regulated system voltage (SYS) ranging from 4.4V to 4.9V in addition to battery voltage tracking and input pass-though options
    • Configurable input current limit
    • USB Suspend mode supported
    • 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
    • 15nA Shutdown mode
    • 3.2µA Ship mode with button press wake
    • 4µA in Battery Only mode
    • 30µA Input adapter Iq in sleep mode
  • One push-button wake-up and reset input
  • 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)
    • Watchdog and safety timer fault
  • 1-A linear battery charger
    • 3.0V to 18V input voltage operating range optimized for battery-to-battery charging and USB adapters
    • 25V tolerant input voltage
    • Configurable battery regulation voltage with 0.5% accuracy from 3.6V to 4.65V in 10mV steps
    • Li-ion, Li-Poly, and LiFePO4 chemistries support
    • 5mA to 1A configurable fast charge current
    • 115mΩ battery FET ON resistance
    • Up to 3.125A discharge current to support high system loads
    • Configurable termination current down to 0.5mA
    • Configurable NTC charging profile thresholds including JEITA support
    • Power cycle and advanced reset mechanism
  • Power path management for powering the system and charging the battery
    • Regulated system voltage (SYS) ranging from 4.4V to 4.9V in addition to battery voltage tracking and input pass-though options
    • Configurable input current limit
    • USB Suspend mode supported
    • 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
    • 15nA Shutdown mode
    • 3.2µA Ship mode with button press wake
    • 4µA in Battery Only mode
    • 30µA Input adapter Iq in sleep mode
  • One push-button wake-up and reset input
  • 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)
    • Watchdog and safety timer fault

The BQ25186 is a linear battery charger IC focusing on small solution size and low quiescent current for extending battery life. The device is available in a leadless, small package with a thermal pad giving thermal performance. The device can support up to 1A charging and system loads of up to 3.125A.

The battery is charged using a standard Li-ion or LiFePO4 charge 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 also 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 push-button input to reduce the total solution footprint.

The BQ25186 is a linear battery charger IC focusing on small solution size and low quiescent current for extending battery life. The device is available in a leadless, small package with a thermal pad giving thermal performance. The device can support up to 1A charging and system loads of up to 3.125A.

The battery is charged using a standard Li-ion or LiFePO4 charge 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 also 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 push-button input to reduce the total solution footprint.
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Type Title Date
* Data sheet BQ25186 1-Cell, 1-A I2 C Linear Battery Charger with Power Path, Ship Mode, Shutdown Mode, and Battery Tracking VINDPM datasheet PDF | HTML 06 May 2024
EVM User's guide BQ25186 Evaluation Module User's Guide PDF | HTML 29 Apr 2024

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Evaluation board

BQ25186EVM — BQ25186 evaluation module

The BQ25186EVM is an evaluation kit for the BQ25186 battery charge management IC. The BQ25186 is an I2C-controlled 1A linear battery charger with power path in a small QFN package with a thermal pad. The BQ25186 integrates the most common functions for industrial and personal electronics (...)
User guide: PDF | HTML
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