MP6901DS-LF-Z

Power Supply Controllers, Monitors Overview

The MP6901DS-LF-Z is a flyback switching controller from Monolithic Power Systems designed as a fast-off intelligent rectifier driver. It operates within an input voltage range of 8 V to 24 V and supports a maximum switching frequency of 400 kHz. The device features a shutdown function and draws 8 mA of operating supply current. It is housed in an SOIC-8 surface-mount package and functions as a non-isolated controller suitable for temperatures between -40°C and +125°C.

Power Supply Controllers, Monitors Feature Summary

• Integrates fast turn-off capability to replace Schottky diodes in flyback converters, reducing forward voltage drop and improving efficiency.
• Supports DCM and quasi-resonant flyback converter topologies with low quiescent current during light load conditions.
• Compatible with standard 12V MOSFETs and 5V logic level MOSFETs for secondary side rectification.

Power Supply Controllers, Monitors Applications

• Secondary side control in high-efficiency flyback power supplies
• Adapter designs requiring compliance with Energy Star standby power regulations
• Systems utilizing external MOSFETs for synchronous rectification

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix LF-Z against official MPS documentation to confirm lead-free status and RoHS compliance before procurement. Confirm that the SOIC-8 package matches your PCB footprint requirements. Ensure the 8 V to 24 V supply range aligns with your system's operational limits. Check for any moisture sensitivity level restrictions during storage and handling.

Power Supply Controllers, Monitors Selection Notes

Select this component when designing flyback converters that require precise timing for MOSFET turn-off to minimize reverse recovery losses. It is appropriate for applications needing compatibility with both standard and logic-level MOSFETs. Consider the SOIC-8 package size constraints and the 400 kHz maximum frequency limit relative to your transformer design.

Power Supply Controllers, Monitors Part Context

This part belongs to the MP6901 series of intelligent rectifier drivers from Monolithic Power Systems. It serves as a specialized controller for secondary-side synchronous rectification in isolated power supplies. The DS suffix indicates the SOIC-8 package variant, distinguishing it from other pinout options like the TSOT-23-5 configuration found in the DJ series.

Power Supply Controllers, Monitors Replacement Considerations

MP6900DS-LF-Z is a documented alternative within the same family offering similar functionality in the SOIC-8 package. Verify pin-to-pin compatibility and electrical parameter alignment before substitution.