Product
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BQ25895M
  • BQ25895M
  • BQ25895M

BQ25895M

ACTIVE

I2C 1cell 5A buck battery charger with 3.1-A boost and HVDCP

Texas Instruments BQ25895M Product Info

1 April 2026 0

Parameters

Rating

Catalog

Number of series cells

1

Cell chemistry

Li-Ion/Li-Polymer

Charge current (max) (A)

5

Features

BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, ICO (Input Current Optimization), IINDPM (Input current limit), Input OVP, Integrated ADC, Power Path, USB D+/D-/BC1.2 integrated, USB OTG integrated

Vin (min) (V)

3.9

Vin (max) (V)

14

Absolute max Vin (max) (V)

22

Control topology

Switch-Mode Buck

Battery charge voltage (min) (V)

3.84

Battery charge voltage (max) (V)

4.6

Control interface

I2C

Operating temperature range (°C)

-40 to 85

Package

WQFN (RTW)-24-16 mm² 4 x 4

Features

  • High efficiency 1.5-MHz switch mode buck charge
    • 93% charge efficiency at 2 A and 91% charge efficiency at 3 A charge current
    • Optimize for high voltage input (9 V / 12 V)
    • Low power PFM mode for light load operations
  • Boost mode operation with adjustable output from 4.5 V to 5.5 V
    • Selectable 500-KHz / 1.5-MHz boost converter with up-to 3.1 A output
    • 93% Boost efficiency at 5 V at 1 A output
    • Support down-to 2.5V battery
    • Support PWM only or PFM/PWM control for light load efficiency
  • Integrated control to switch between charge and boost mode
  • Single input to support USB input and adjustable high voltage adapters
    • Support 3.9-V to 14-V input voltage range
    • Input current limit (100 mA to 3.25 A with 50-mA resolution) to support USB2.0, USB3.0 standard and high voltage adapters
    • Maximum power tracking by input voltage limit up-to 14V for wide range of adapters
    • Auto detect USB SDP, CDP, DCP, and non-standard adapters
  • Input current optimizer (ICO) to maximize input power without overloading adapters
  • Resistance compensation (IRCOMP) from charger output to cell terminal
  • Highest battery discharge efficiency with 11-mΩ battery discharge MOSFET up to 9 A
  • Integrated ADC for system monitor (voltage, temperature, charge current)
  • BATFET Control to support ship mode, wake up, and full system reset
  • Flexible autonomous and I2C mode for optimal system performance
  • High integration includes all MOSFETs, current sensing and loop compensation
  • 12-µA Low battery leakage current to support ship mode
  • High accuracy
    • ±0.5% Charge voltage regulation
    • ±5% Charge current regulation
    • ±7.5% Input current regulation
  • Safety
    • Battery temperature sensing for charge and boost mode
    • Thermal regulation and thermal shutdown
  • High efficiency 1.5-MHz switch mode buck charge
    • 93% charge efficiency at 2 A and 91% charge efficiency at 3 A charge current
    • Optimize for high voltage input (9 V / 12 V)
    • Low power PFM mode for light load operations
  • Boost mode operation with adjustable output from 4.5 V to 5.5 V
    • Selectable 500-KHz / 1.5-MHz boost converter with up-to 3.1 A output
    • 93% Boost efficiency at 5 V at 1 A output
    • Support down-to 2.5V battery
    • Support PWM only or PFM/PWM control for light load efficiency
  • Integrated control to switch between charge and boost mode
  • Single input to support USB input and adjustable high voltage adapters
    • Support 3.9-V to 14-V input voltage range
    • Input current limit (100 mA to 3.25 A with 50-mA resolution) to support USB2.0, USB3.0 standard and high voltage adapters
    • Maximum power tracking by input voltage limit up-to 14V for wide range of adapters
    • Auto detect USB SDP, CDP, DCP, and non-standard adapters
  • Input current optimizer (ICO) to maximize input power without overloading adapters
  • Resistance compensation (IRCOMP) from charger output to cell terminal
  • Highest battery discharge efficiency with 11-mΩ battery discharge MOSFET up to 9 A
  • Integrated ADC for system monitor (voltage, temperature, charge current)
  • BATFET Control to support ship mode, wake up, and full system reset
  • Flexible autonomous and I2C mode for optimal system performance
  • High integration includes all MOSFETs, current sensing and loop compensation
  • 12-µA Low battery leakage current to support ship mode
  • High accuracy
    • ±0.5% Charge voltage regulation
    • ±5% Charge current regulation
    • ±7.5% Input current regulation
  • Safety
    • Battery temperature sensing for charge and boost mode
    • Thermal regulation and thermal shutdown

Description

The BQ25895M is a highly-integrated 5-A switch-mode battery charge management and system power path management device for single cell Li-Ion and Li-polymer battery. The devices support high input voltage fast charging. The low impedance power path optimizes switch-mode operation efficiency, reduces battery charging time and extends battery life during discharging phase. The I2C Serial interface with charging and system settings makes the device a truly flexible solution.

The BQ25895M is a highly-integrated 5-A switch-mode battery charge management and system power path management device for single cell Li-Ion and Li-polymer battery. The devices support high input voltage fast charging. The low impedance power path optimizes switch-mode operation efficiency, reduces battery charging time and extends battery life during discharging phase. The I2C Serial interface with charging and system settings makes the device a truly flexible solution.

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