MP4651ES-LF-Z

Overview

The MP4651ES-LF-Z is an offline half-bridge LLC controller designed for white LED lighting applications. It operates within a supply voltage range of 9 V to 30 V and supports a fixed switching frequency of 50 kHz. The device features PWM dimming capability and is housed in a 16-pin SOIC package. It is rated for operation between -20°C and +85°C, with a maximum power dissipation of 2.5 W and a quiescent current of 2.5 mA.

Feature Summary

• Implements half-bridge LLC resonant topology for efficient power conversion
• Supports pulse-width modulation (PWM) dimming control
• Integrated protection mechanisms including overvoltage and thermal shutdown

Applications

• Offline LED lighting systems
• White LED driver circuits

Procurement Notes

Verify the component status before integration, as the MP4651ES-LF-Z is marked as Not Recommended for New Designs (NRND). Confirm that existing inventory or last-time-buy options align with long-term production requirements. Ensure compliance with RoHS directives and moisture sensitivity levels during storage and handling procedures.

Selection Notes

Select this controller for designs requiring a 50 kHz fixed-frequency LLC solution with PWM dimming support. The 9 V to 30 V input range suits specific low-voltage offline architectures. Consider the NRND status when planning future product lifecycles and potential obsolescence risks.

Part Context

This component belongs to the MP4651 series from Monolithic Power Systems, specialized for LED lighting drivers. It serves as an integrated controller for resonant converters, distinguishing itself through its specific focus on half-bridge LLC topologies for single-output white LED applications.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.