MP6902DS-LF-P

Power Supply Controllers, Monitors Overview

The MP6902DS-LF-P is a secondary-side synchronous rectifier controller from Monolithic Power Systems, designed for flyback topologies. It operates within an 8V to 24V supply voltage range and supports switching frequencies up to 400 kHz. The device features fast turn-off capabilities with a total delay of 20ns and regulates the external MOSFET forward voltage drop to approximately 70mV. It includes light-load management for reduced quiescent current and supports both high-side and low-side rectification in DCM and quasi-resonant converters.

Power Supply Controllers, Monitors Feature Summary

• Fast turn-off intelligent rectifier driver with 20ns total delay
• Regulates external MOSFET forward voltage drop to approximately 70mV
• Supports standard 12V and logic-level 5V MOSFETs
• Includes light-load management for enhanced efficiency

Power Supply Controllers, Monitors Applications

• Flyback power supplies
• DCM and quasi-resonant converter designs
• Secondary-side synchronous rectification
• High-efficiency AC-DC adapters

Power Supply Controllers, Monitors Procurement Notes

Verify the suffix 'P' indicates tube packaging versus 'Z' for reel packaging when ordering. Confirm RoHS compliance status through official documentation. Ensure the selected variant matches the required thermal performance and package dimensions for the target PCB layout. Cross-reference the specific datasheet revision for any design-in updates.

Power Supply Controllers, Monitors Selection Notes

Select this component for flyback applications requiring precise control of synchronous rectifier timing. It is suitable for designs utilizing standard or logic-level MOSFETs on the secondary side. Consider the 8V to 24V VDD operating range and 400 kHz maximum frequency limits during system planning. Verify compatibility with the primary controller's switching profile.

Power Supply Controllers, Monitors Part Context

This part belongs to the MP6902 series of intelligent rectifiers from Monolithic Power Systems. It serves as a direct replacement for Schottky diodes in flyback converters to improve efficiency. The DS suffix denotes the SOIC-8 package option. The series is engineered to meet stringent standby power requirements such as Energy Star standards.

Power Supply Controllers, Monitors Replacement Considerations

MP6902DS-LF-Z is a verified direct substitute differing primarily in packaging format.