MP4425MGQB-P

Overview

The MP4425MGQB-P is a synchronous step-down LED driver IC from Monolithic Power Systems. It operates with an input voltage range of 4 V to 36 V and delivers up to 1.5 A output current. The device functions at a fixed switching frequency of 2.2 MHz, enabling the use of small external components. It features adjustable output voltage and supports PWM dimming for brightness control. Integrated protections include short circuit and thermal shutdown. The component is housed in a QFN-13 package and is rated for operation between -40°C and +125°C.

Feature Summary

• Supports high-frequency synchronous buck topology for compact design
• Enables precise LED brightness control via PWM dimming interface
• Includes integrated short circuit and thermal protection mechanisms

Applications

• Automotive interior lighting systems
• General LED illumination drivers
• High-efficiency DC-DC conversion for LED loads

Procurement Notes

Verify the specific suffix against official MPS documentation to confirm pinout and feature variations. Ensure the ordering part number matches the required package type and temperature rating. Cross-reference datasheet revisions to confirm compatibility with existing designs. Confirm RoHS compliance status through manufacturer declarations. Validate that the selected variant meets all electrical requirements for the target application.

Selection Notes

Select this component when a compact, high-frequency solution is required for driving LEDs from a wide input voltage range. The 2.2 MHz frequency allows for smaller inductors and capacitors compared to lower-frequency alternatives. Consider the QFN-13 package for space-constrained PCB layouts. Evaluate thermal performance based on the expected load current and ambient conditions within the operating temperature range.

Part Context

This part belongs to the MP4425 series of synchronous step-down LED drivers. It shares functional similarities with other members like the MPQ4425AGQB-AEC1-P but may differ in automotive qualification or specific package options. The series is designed for efficient LED regulation using a buck converter topology. It targets applications requiring reliable, high-density power management for lighting systems.

Replacement Considerations

MPQ4425AGQB-AEC1-P is a related automotive-grade variant within the same family. Verify pin compatibility and electrical specifications before substitution. Check if the alternative meets specific automotive reliability standards if required by the application.