RT9471DGQW(2)

Overview

The RT9471DGQW(2) is a highly integrated single-cell lithium-ion battery charge management IC manufactured by Richtek USA Inc. It supports USB adapter (5V) and solar panel inputs, delivering a maximum charging current of 3A. The device features an I2C interface for flexible configuration of input current limits, input voltage limits, charging current, and charging voltage. Integrated protections include over-voltage, over-current, and over-temperature safeguards, alongside temperature monitoring and timer functions.

Feature Summary

• Supports flexible input sources including USB adapters and solar panels
• Enables precise control via I2C communication interface
• Integrates comprehensive safety mechanisms such as over-voltage, over-current, and over-temperature protection

Applications

• Portable electronic devices
• Internet of Things (IoT) equipment
• Medical devices powered by single-cell lithium batteries

Procurement Notes

Verify the specific suffix DGQW to confirm package type and tape/reel specifications. Confirm RoHS compliance status with the manufacturer prior to ordering. Ensure I2C address settings align with system design requirements. Validate thermal performance under maximum load conditions in the final application environment.

Selection Notes

Select this component for applications requiring high integration and programmable charging parameters via digital interface. Suitable for designs needing support for diverse input sources like solar or standard USB. Ideal for space-constrained portable electronics where single-cell lithium battery management is required.

Part Context

Part of Richtek's RT9471 series of single-cell switching battery chargers. Designed for modern portable electronics requiring efficient power management. Shares family characteristics with related models offering similar charging profiles but potentially different packages or pinouts.

Replacement Considerations

RT9471GQW serves as a direct alternative within the same product family.