RT9514GQW

Overview

The RT9514GQW is a single-cell Li-Ion/Li-Polymer battery charger IC manufactured by Richtek USA Inc. It operates in a 10-WDFN (3x3) package with an exposed pad. The device integrates constant-current and constant-charge termination algorithms for safe lithium-ion battery charging. It supports programmable charging current and features thermal regulation to automatically reduce charging current when the die temperature reaches a predefined limit, ensuring reliable operation under high power or elevated ambient conditions.

Feature Summary

• Integrates constant-current and constant-voltage charging algorithms for single-cell lithium batteries
• Includes thermal regulation circuitry to manage die temperature during charging cycles
• Supports programmable charging current settings via external resistor
• Features charge status indicator output for system monitoring

Applications

• Portable electronic devices requiring single-cell lithium battery management
• Consumer electronics with limited PCB space constraints
• Battery-powered handheld instruments
• IoT devices utilizing Li-Ion or Li-Polymer cells

Procurement Notes

Verify component authenticity through authorized distributors as the part may be obsolete. Confirm package integrity and pin compatibility before integration. Check for updated replacement recommendations from Richtek due to potential lifecycle changes. Ensure design-in documentation matches the specific GQW suffix requirements for thermal and electrical performance validation.

Selection Notes

Select this component for applications requiring a compact solution for single-cell lithium battery charging. Evaluate thermal performance requirements against the integrated thermal regulation feature. Compare pinout and package dimensions with existing board layouts. Consider availability status and potential obsolescence risks when planning long-term production cycles.

Part Context

The RT9514GQW belongs to Richtek's portfolio of battery management integrated circuits designed for portable applications. It falls under the PMIC category specifically tailored for lithium-ion battery charging functions. The device represents a cost-effective solution for manufacturers seeking to minimize component count while maintaining reliable charging characteristics in small form factor designs.

Replacement Considerations

Consult Richtek technical support for current equivalent models as the RT9514GQW is listed as obsolete. Verify functional compatibility and pin-to-pin substitution options before transitioning to alternative parts. Review updated datasheets for any changes in electrical specifications or package configurations.