MP6908GJ-Z

Power Supply Controllers, Monitors Overview

The MP6908GJ-Z is a fast turn-off intelligent rectifier switch controller designed for flyback power supplies. It replaces Schottky diodes by driving external synchronous rectifier (SR) MOSFETs, regulating conduction voltage drop to approximately 40mV. The device operates with a supply voltage range of 4V to 13V and draws a typical supply current of 2.9 mA. It supports switching frequencies up to 400 kHz with a maximum duty cycle of 50%. Key electrical parameters include rise and fall times of 30 ns, ensuring rapid switching transitions. The component functions in non-isolated configurations and is rated for junction temperatures up to 125°C.

Power Supply Controllers, Monitors Feature Summary

• Eliminates the need for auxiliary windings in secondary-side high-side or low-side rectification applications
• Integrates programmable ringing detection to prevent false triggering during discontinuous conduction mode and quasi-resonant operation
• Generates its own supply voltage to support battery charging applications with low output voltages or short-circuit conditions

Power Supply Controllers, Monitors Applications

• Flyback power supplies
• Battery charging applications with potential low output voltage
• High-side synchronous rectifier configurations

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix 'Z' indicates compliance with RoHS3 standards when sourcing this component. Confirm that the TSOT-23-6 package matches the target PCB footprint requirements. Ensure the selected distributor provides valid traceability documentation for Monolithic Power Systems Inc. products. Cross-reference the manufacturer part number against official datasheets to confirm functional equivalence before finalizing procurement orders.

Power Supply Controllers, Monitors Selection Notes

Select this controller for designs requiring precise control of synchronous rectifier conduction losses without auxiliary winding complexity. Consider the 40mV regulation target for efficiency optimization in low-voltage output scenarios. Evaluate the 30ns switching speed against EMI constraints in the system design. Verify compatibility with both standard and logic level SR MOSFETs intended for the application.

Power Supply Controllers, Monitors Part Context

The MP6908 belongs to the MP6908 series of intelligent rectifier drivers manufactured by Monolithic Power Systems. It serves as an analog low-dropout diode control IC specifically engineered to enhance efficiency in flyback converters. The GJ-Z variant denotes the specific packaging and environmental compliance status within this product line.

Power Supply Controllers, Monitors Replacement Considerations

MP6908GJ-P is a confirmed substitute part number within the same series offering identical functionality.