MP6908LGJ-P

Power Supply Controllers, Monitors Overview

The MP6908LGJ-P is a switching controller from Monolithic Power Systems designed for flyback topologies. It operates as a fast turn-off intelligent rectifier, replacing Schottky diodes in synchronous rectification applications. The device supports one output with a maximum switching frequency of 400 kHz and a duty cycle up to 50%. It regulates the external SR MOSFET conduction voltage drop to approximately 40mV. The component functions within an operating temperature range of -40°C to +125°C and utilizes a TSOT23-6 surface mount package.

Power Supply Controllers, Monitors Feature Summary

• Eliminates auxiliary windings for secondary-side high-side or low-side rectification
• Programmable ringing detection prevents false triggering during DCM and quasi-resonant operation
• Generates its own supply voltage for battery charging or high-side configurations
• Supports standard and logic level SR MOSFETs with ~30ns fast turn-on/off delay

Power Supply Controllers, Monitors Applications

• Flyback converters requiring efficient synchronous rectification
• Battery charging applications with potential low output voltages
• High-side synchronous rectifier configurations
• Systems supporting discontinuous conduction mode (DCM) and quasi-resonant operation

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix LGJ against the manufacturer datasheet to confirm pinout and package variations. Ensure compatibility with the intended flyback topology and input voltage ranges. Confirm moisture sensitivity levels and reflow soldering profiles prior to assembly. Cross-reference ordering information with official MPS documentation to avoid substitution errors.

Power Supply Controllers, Monitors Selection Notes

Select this component for designs prioritizing efficiency in flyback converters without auxiliary windings. It is suitable for applications requiring precise control of synchronous rectifier MOSFETs. Consider the thermal performance within the specified temperature range. Evaluate the need for ringing detection features based on the converter's operating mode.

Power Supply Controllers, Monitors Part Context

This part belongs to the MP6908L series of intelligent rectifiers from Monolithic Power Systems. It is engineered to enhance power conversion efficiency by actively controlling external MOSFETs. The series targets modern power supplies where size reduction and performance optimization are critical requirements.

Power Supply Controllers, Monitors Replacement Considerations

Consult official MPS documentation for direct substitutes. Verify functional equivalence regarding switching frequency and control logic before implementation.