RT9458WSC

Overview

The RT9458WSC is a switch-mode single-cell Li-Ion/Li-Polymer battery charger IC designed for portable applications. It integrates an internal power MOSFET and supports input currents up to 1.55A. The device operates within a temperature range of -40°C to 85°C and utilizes an I2C interface for configuration. It is housed in a 20-WLCSP package with dimensions of 1.87x2.1 mm.

Feature Summary

• Integrates internal power MOSFET for compact design
• Supports I2C programmable charging parameters
• Switch-mode architecture for high efficiency

Applications

• Portable electronic devices
• Single-cell lithium-ion battery systems
• Li-Polymer battery charging solutions

Procurement Notes

Verify the specific suffix 'WSC' against the manufacturer's latest datasheet to confirm pinout, thermal characteristics, and packaging details. Ensure compatibility with system voltage levels and I2C address configurations before integration. Cross-reference official documentation for any revisions or obsolescence notices.

Selection Notes

Select this component for applications requiring a single-cell Li-Ion or Li-Polymer charging solution with integrated power switches. The I2C interface allows for flexible parameter adjustment. Consider the WLCSP package size constraints and thermal management requirements for the target enclosure.

Part Context

This part belongs to Richtek's portfolio of battery charge controllers. It is distinct from multi-cell chargers and linear regulators. The RT9458 series focuses on efficient switching regulation for small form factor portable electronics, differentiating it from older linear charging technologies.

Replacement Considerations

Consult official substitution guides for direct equivalents. Verify that alternative parts match the 20-WLCSP footprint and support similar input current capabilities. Ensure functional compatibility regarding I2C control and thermal performance.