RT9527AGQW

Overview

The RT9527AGQW is a single-cell lithium-ion battery charger IC from Richtek USA Inc. It integrates power FETs and supports USB input with a maximum AC adapter rating of 28V. The device offers adjustable charging current up to 0.6A and includes a programmable safe charge timer. It features NTC thermistor input for thermal monitoring and operates within a temperature range of -40°C.

Feature Summary

• Integrates internal power FETs for compact design
• Supports adjustable charging current settings
• Includes programmable safe charge timer functionality
• Provides NTC thermistor input for temperature monitoring

Applications

• Single-cell lithium-ion battery charging in portable devices
• USB-powered consumer electronics
• Battery management systems requiring thermal protection

Procurement Notes

Verify the exact package type, which is an 8-WDFN (2x2) exposed pad, against your PCB footprint requirements. Confirm RoHS3 compliance status if environmental regulations apply to your assembly process. Ensure the operating temperature range meets your specific application conditions. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when designing circuits for single-cell lithium-ion batteries where space efficiency is critical due to its integrated power FETs. Consider its 0.6A current limit and USB interface compatibility for low-power applications. Evaluate the need for external NTC thermistors if precise thermal management is required beyond basic safety timers.

Part Context

This part belongs to Richtek's family of battery charger ICs designed for mobile and portable electronics. It simplifies design by integrating switching regulators and power switches, reducing the component count compared to discrete solutions. The WDFN-8 package allows for small form factor implementations suitable for modern handheld devices.

Replacement Considerations

Consult official datasheets for direct pin-to-pin replacements or functional equivalents from Richtek or other manufacturers. Verify that any substitute matches the 8-WDFN package dimensions and electrical specifications exactly.