RT9368AGQW

Overview

The RT9368AGQW is a high-efficiency, cost-effective charge pump white LED driver manufactured by Richtek USA Inc. It supports up to four white LEDs with regulated constant current for uniform brightness. The device features a low dropout current source and multi-step dimming capability. Packaged in a 16-pin WQFN, it utilizes a switched capacitor topology to provide reliable power management solutions for LED applications.

Feature Summary

• High-efficiency synchronous buck converter design
• Multi-step dimming capability
• Regulated constant current output

Applications

• White LED backlighting systems
• Portable electronic devices requiring compact power management
• General LED illumination circuits

Procurement Notes

Verify the exact part number suffix against official Richtek documentation to ensure correct package and temperature grade specifications. Confirm availability status as the component may be listed as obsolete or end-of-life in certain distributor channels. Request updated datasheets directly from the manufacturer or authorized agents to validate current production status and pinout configurations before finalizing procurement orders.

Selection Notes

Select this component for applications requiring a compact solution for driving multiple white LEDs with uniform current regulation. The integrated charge pump topology eliminates the need for external inductors, reducing board space. Ensure input voltage ranges align with the system's power supply constraints. Consider the thermal performance of the 16WQFN package relative to the expected heat dissipation requirements of the specific LED load configuration.

Part Context

The RT9368 series belongs to Richtek's portfolio of LED drivers designed for portable electronics. This specific model integrates a charge pump and current source to simplify circuit design. It targets markets demanding high efficiency and minimal component count. The device represents a specialized solution for managing white LED arrays in space-constrained environments where stable current regulation is critical for consistent light output.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided data. As the product is noted as obsolete, consult Richtek technical support for qualified replacements. Verify compatibility of pinouts and electrical characteristics if considering alternative manufacturers' components for retrofitting existing designs.