MP6908LGJ-Z

Power Supply Controllers, Monitors Overview

The MP6908LGJ-Z is a flyback switching controller from Monolithic Power Systems, packaged in TSOT23-6. It operates as an intelligent rectifier with a maximum duty cycle of 50% and a switching frequency of 400 kHz. The device supports one output at 12 V and 3 A, functioning within a supply voltage range of 4.5 V to 13 V. It draws 2.9 mA of operating current and delivers 560 mW of output power. Thermal performance spans -40 C to +125 C, with rise and fall times of 30 ns.

Power Supply Controllers, Monitors Feature Summary

• Eliminates the need for auxiliary windings by generating its own power supply voltage for high-side or low-side synchronous rectification configurations.
• Incorporates programmable ringing detection to prevent false triggering during voltage oscillations in discontinuous conduction mode (DCM) and quasi-resonant operation.
• Regulates external synchronous rectifier MOSFET on-state voltage drop to approximately 40mV while ensuring rapid turn-off when voltage becomes negative.

Power Supply Controllers, Monitors Applications

• Flyback power supplies
• Battery charging applications with potential low output voltages under short-circuit conditions

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix LGJ-Z against official datasheets to confirm package type and temperature grade. Confirm RoHS compliance status through manufacturer documentation. Ensure compatibility with standard and logic level SR MOSFETs. Validate design resources using MPSmart software simulation tools provided by the manufacturer.

Power Supply Controllers, Monitors Selection Notes

Select this component for flyback topologies requiring efficient secondary side rectification without auxiliary windings. Suitable for designs supporting DCM, CCM, and quasi-resonant modes. Verify that the TSOT23-6 package fits the spatial constraints. Ensure the input voltage range aligns with the 4.5 V to 13 V specification.

Power Supply Controllers, Monitors Part Context

This part belongs to the MP6908L series of intelligent rectifiers designed to replace Schottky diodes in high-efficiency flyback converters. It enables synchronous rectification by driving external switches, improving overall system efficiency compared to traditional diode-based solutions.

Power Supply Controllers, Monitors Replacement Considerations

MP6908GJ-Z is a confirmed substitute within the same product family.