MP8126DF-LF-P

Overview

The MP8126DF-LF-P is a switching regulator IC designed for LNB power supply applications. It accepts an input voltage range of 8V to 14V and provides a single output with selectable voltages of 13V, 14V, 18V, or 19V. The device supports up to 550mA output current and operates within a temperature range of -40°C to 125°C. It is housed in a 24-QFN (4x4) package with exposed pad.

Feature Summary

• Integrated control voltage regulation for Low Noise Block downconverter systems
• Switching topology optimized for satellite receiver power management
• Fixed output voltage options tailored for standard LNB requirements

Applications

• Satellite television receiver power supplies
• LNB control voltage generation
• Set-top box power management circuits

Procurement Notes

Verify the specific suffix configuration against the manufacturer datasheet to ensure compatibility with required output voltage settings. Confirm that the 24-QFN package dimensions align with the target PCB footprint. Check component status as some listings indicate this part may be restricted from new designs due to minimum order quantity constraints.

Selection Notes

Select this component when designing power stages for satellite receivers requiring precise LNB control voltages. Ensure the input supply remains within the 8V to 14V window. Verify thermal performance capabilities given the high operating temperature limit and compact QFN packaging constraints.

Part Context

This part belongs to the MP8126 family of LNB regulators manufactured by Monolithic Power Systems. It serves as a specialized PMIC solution for converting vehicle or adapter input voltages into stable control signals for satellite hardware components.

Replacement Considerations

MP8125DF-LF-P

FAQ

What are the available output voltage options?

The device supports fixed output voltages of 13V, 14V, 18V, and 19V.

What is the maximum output current capability?

The regulator can deliver up to 550mA of output current.