Product details

Number of series cells 1 Charge current (Max) (A) 1 Operating Vin (Max) (V) 5.5 Cell chemistry Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4 Battery charge voltage (Min) (V) 3.6 Battery charge voltage (Max) (V) 4.65 Absolute Vin (safety rating) (Max) ((V)) 25 Control interface I2C Features BAT temp thermistor monitoring (JEITA profile), IC thermal regulation, IINDPM (Input current limit), Input OVP, Power Path, VINDPM (Input voltage threshold to maximize adaptor power) Operating Vin (Min) (V) 3 Rating Catalog
Number of series cells 1 Charge current (Max) (A) 1 Operating Vin (Max) (V) 5.5 Cell chemistry Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4 Battery charge voltage (Min) (V) 3.6 Battery charge voltage (Max) (V) 4.65 Absolute Vin (safety rating) (Max) ((V)) 25 Control interface I2C Features BAT temp thermistor monitoring (JEITA profile), IC thermal regulation, IINDPM (Input current limit), Input OVP, Power Path, VINDPM (Input voltage threshold to maximize adaptor power) Operating Vin (Min) (V) 3 Rating Catalog
DSBGA (YBG) 8
  • 1-A linear battery charger
    • 3.0-V to 5.9-V input voltage operating range optimized for battery to battery charging and USB adapter
    • 25-V tolerant input voltage
    • Configurable battery regulation voltage with 0.5% accuracy from 3.6 V to 4.65 V in 10-mV steps
    • Li-ion and LiFePO4 chemistries support
    • 5-mA to 1-A configurable fast charge current
    • 70-mΩ battery FET ON resistance
    • Up to 2.5-A discharge current to support high system loads
    • Configurable termination current down to 0.5 mA
    • Configurable NTC charging profile thresholds including JEITA support
    • Power cycle and advanced reset mechanism
    • I2C or standalone versions available
  • Power path management for powering the system and charging the battery
    • Regulated system voltage (SYS) ranging from 4.4 V to 4.9 V in addition to battery voltage tracking and input pass-though options
    • Configurable input current limit
    • USB Suspend mode supported
    • Dynamic power path management optimizes charging from weak adapters
  • Ultra low quiescent current
    • 10-nA Shutdown mode
    • 5-µA Ship mode with button press wake
    • 3 µA in Battery Only mode
    • 500-µA input Iq when charge is disabled/terminated
  • 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
    • 3.0-V to 5.9-V input voltage operating range optimized for battery to battery charging and USB adapter
    • 25-V tolerant input voltage
    • Configurable battery regulation voltage with 0.5% accuracy from 3.6 V to 4.65 V in 10-mV steps
    • Li-ion and LiFePO4 chemistries support
    • 5-mA to 1-A configurable fast charge current
    • 70-mΩ battery FET ON resistance
    • Up to 2.5-A discharge current to support high system loads
    • Configurable termination current down to 0.5 mA
    • Configurable NTC charging profile thresholds including JEITA support
    • Power cycle and advanced reset mechanism
    • I2C or standalone versions available
  • Power path management for powering the system and charging the battery
    • Regulated system voltage (SYS) ranging from 4.4 V to 4.9 V in addition to battery voltage tracking and input pass-though options
    • Configurable input current limit
    • USB Suspend mode supported
    • Dynamic power path management optimizes charging from weak adapters
  • Ultra low quiescent current
    • 10-nA Shutdown mode
    • 5-µA Ship mode with button press wake
    • 3 µA in Battery Only mode
    • 500-µA input Iq when charge is disabled/terminated
  • 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 BQ25180 is a linear battery charger IC focusing on small solution size and low quiescent current for extending battery life. The device is available in an 8-ball chipscale package which does not need HDI PCB process for fabrication thereby reducing the PCB cost. The device can support up to 1-A charging and system loads of up to 2.5 A.

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 3-V minimum input voltage operation and can withstand 25-V absolute maximum line transients. The device integrates a single push-button input and reset circuitry to reduce the total solution footprint.

The BQ25180 is a linear battery charger IC focusing on small solution size and low quiescent current for extending battery life. The device is available in an 8-ball chipscale package which does not need HDI PCB process for fabrication thereby reducing the PCB cost. The device can support up to 1-A charging and system loads of up to 2.5 A.

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 3-V minimum input voltage operation and can withstand 25-V absolute maximum line transients. The device integrates a single push-button input and reset circuitry to reduce the total solution footprint.

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Type Title Date
* Data sheet BQ25180 I2C Controlled, 1-Cell, 1-A Linear Battery Charger with Power Path and Ship Mode datasheet 03 Sep 2021
Technical article When to use rechargeable batteries in small battery applications 01 Oct 2019
Technical article Should I use a linear charger or a switching charger? 31 Oct 2015
Technical article Summertime and the livin' is easy 20 Jun 2014

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