R2A20057BX#W0

Overview

The R2A20057BX#W0 is a lithium-ion battery charge controller IC developed by Renesas Electronics Corporation for mobile devices employing one-cell Li-ion batteries, such as digital still cameras and smartphones. It integrates a step-down DC-DC converter and supports large-current rapid charging up to 2 A. The component is housed in a very small package, described as being in the world's smallest class.

Feature Summary

• Integrates a step-down DC-DC converter
• Supports large-current rapid charging
• Designed for single-cell lithium-ion batteries

Applications

• Digital still cameras
• Smartphones

Procurement Notes

Verify the specific suffix #W0 against official Renesas documentation to confirm pinout and packaging details. Ensure compatibility with single-cell Li-ion battery architectures. Confirm thermal management requirements for 2 A charging operations within the specified small package constraints.

Selection Notes

Select this IC for applications requiring integrated power conversion and high-current charging in compact form factors. Evaluate board space limitations against the claimed smallest-class package size. Ensure the system design accommodates the thermal dissipation needs associated with 2 A charging currents.

Part Context

This component belongs to Renesas' battery power group, targeting portable electronics. It addresses the need for efficient power management in devices like smartphones and cameras where space is critical. The integration of the DC-DC converter simplifies the overall power supply design for these mobile platforms.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.