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    BQ25185 USB / DC / Solar Li-ion Battery Charger with 3.
    • BQ25185 USB / DC / Solar Li-ion Battery Charger with 3.
    • BQ25185 USB / DC / Solar Li-ion Battery Charger with 3.

    BQ25185 USB / DC / Solar Li-ion Battery Charger with 3.3V Buck Converter Board

    RBD-4113

    The BQ25185 charger board is a compact power management solution designed for single-cell lithium-ion or lithium-polymer batteries. It supports charging from USB Type-C, DC input, or solar panels and includes an onboard 3.3V buck converter, allowing projects to run directly from the battery without requiring a separate regulator board.

    BDT 1,999
    BDT 1,999 BDT 1,999 BDT 1,999 BDT 1,999
    Tax excluded Tax includedTax excludedTax includedTax excluded
    BDT 1,999 Tax excluded
    BDT 1,999 Tax included
    BDT 0 Tax
    BDT 1,999 Tax excluded
    BDT 0 Tax
    BDT 1,999 Tax included
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    Description

    Short Description

    The BQ25185 charger board is a compact power management solution designed for single-cell lithium-ion or lithium-polymer batteries. It supports charging from USB Type-C, DC input, or solar panels and includes an onboard 3.3V buck converter, allowing projects to run directly from the battery without requiring a separate regulator board.


    Key Features

    • Single-cell Li-ion / LiPo battery charger

    • Supports USB, DC, and solar charging inputs

    • Integrated power-path management

    • Onboard 3.3V buck converter

    • Adjustable charge current

    • Regulated load outputs

    • Status indication LEDs


    Technical Specifications

    Charging and Power

    • Charger IC: BQ25185

    • Buck Converter IC: TPS62569

    • Battery Type: Single-cell Li-ion / LiPo

    • Recommended Battery Capacity: 500mAh or higher

    • USB Input: USB Type-C, 5V up to 1A

    • DC / Solar Input Voltage: 5V to 18V

    • Default Charge Current: 1A

    • Optional Charge Current: 500mA (via jumper)

    Outputs

    • Load Output Voltage:

      • 3.0V to 4.5V (power-path output, up to 1A)

    • Regulated Output Voltage:

      • 3.3V (buck converter, up to 1A)

    Indicators and Control

    • Charging Status LED: Orange

    • Fault Indicator LED: Red

    • 3.3V Output Indicator LED: Green

    • Enable Pad: Controls 3.3V buck converter

    Connectors and Interfaces

    • Battery Connector: JST PH 2-pin

    • USB Connector: USB Type-C

    • Load Output: Terminal blocks

    • DC / Solar Input: Edge pads


    Applications / Use Cases

    • Battery-powered IoT devices

    • Portable embedded systems

    • Solar-powered sensor nodes

    • Wearable electronics

    • 3.3V microcontroller projects

    • Remote data loggers


    How to Use

    • Connect a single-cell Li-ion or LiPo battery to the JST PH connector

    • Power the board using USB Type-C, DC input, or a compatible solar panel

    • Use the terminal block outputs to power your circuit

    • Optionally adjust the charge current by modifying the onboard jumper


    Package Includes

    • 1 x BQ25185 USB / DC / Solar charger board with 3.3V buck converter


    Notes / Warnings

    • Designed for single-cell lithium batteries only

    • Outputs will not exceed 4.5V or 3.3V respectively

    • Output voltage may drop to around 3.0V when the battery is nearly depleted

    • High input voltage and current may cause heat dissipation

    • Solar input works best with 5V to 7V panels


    The BQ25185 charger board combines flexible charging options with integrated power regulation, making it a practical solution for portable and solar-powered electronics that require a stable 3.3V supply and efficient battery management.

    Product Details
    RBD-4113
    1 Item

    Specific References

    EAN13
    4113
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