DFR0564 USB to 7.4V Li-ion Battery Charger
Overview
The DFR0564 is a compact, open-frame boost-type battery charger designed to charge 7.4V (2S) Lithium-Ion battery packs from a standard 5V USB power source. It accepts an input voltage between 3V and 6V and delivers a constant charging current of up to 1A with 1 percent accuracy. This module simplifies the integration of multi-cell battery charging into portable projects where only a single USB port or a 5V power supply is available.
Why Choose This Part
The module features an integrated boost circuit that allows high-voltage charging from low-voltage USB inputs and includes a multi-function LED for real-time status monitoring. It provides comprehensive protection for both the battery and the power supply, ensuring safe operation between -40C and +85C. The board design includes reserved solder pads for charge input and battery ports, facilitating easy measurement and custom chassis mounting.
Applications
Key Specifications
Getting Started
Connect a 3-6V DC power source via the USB A receptacle or the reserved VIN pads and attach a 7.4V 2-cell Lithium-ion battery to the output pads. Monitor the onboard LED indicator to determine charging status, and ensure the power supply can provide at least 1A to maintain the maximum charge rate.
