MP4655GY-Z

Overview

The MP4655GY-Z is a single-stage LLC LED current and system voltage controller from Monolithic Power Systems. It operates within a 9 V to 35 V input range and supports a switching frequency of 130 kHz. The device utilizes a flyback topology and features analog dimming capabilities for precise light control. Designed for LED backlighting applications, it integrates protection mechanisms including overvoltage, overcurrent, and thermal shutdown. The component is housed in a 28-SOIC package and functions as a DC-DC controller without internal switches.

Feature Summary

• Integrates pure single-stage LLC control for simultaneous LED current regulation and system voltage management
• Supports analog dimming for smooth brightness adjustment in lighting systems
• Includes comprehensive protection features such as overvoltage, overcurrent, and thermal shutdown

Applications

• LED backlighting systems
• General LED lighting drivers
• Single-stage AC/DC or DC/DC power supplies

Procurement Notes

Verify the suffix 'Z' indicates RoHS compliance when sourcing. Confirm the 28-SOIC package dimensions match your PCB footprint requirements. Check humidity sensitivity level (MSL 3) for proper storage and handling procedures during assembly. Ensure the operating temperature range of -40°C to +125°C aligns with your application's thermal environment.

Selection Notes

Select this controller for applications requiring integrated voltage and current regulation in a single stage. It is suitable for designs needing analog dimming functionality. Consider the 28-SOIC package size for layout constraints. Verify that the 9 V to 35 V input range meets your power supply specifications. Evaluate the need for external components based on the flyback topology requirements.

Part Context

The MP4655 belongs to the MP4655 series of LED lighting driver ICs manufactured by Monolithic Power Systems. This series focuses on efficient single-stage solutions for LED applications. The MP4655GY-Z variant specifically denotes the RoHS-compliant version in a 28-SOIC package. It serves as a dedicated controller for managing LED current and system voltage simultaneously.

Replacement Considerations

MP4655GY-P is listed as a direct substitute part number.