MP3373GY-P

Overview

The MP3373GY-P is an 8-channel boost WLED controller from Monolithic Power Systems, designed for LCD backlighting. It operates with a supply voltage range of 9V to 40V and features a switching frequency between 100kHz and 1MHz. Each channel provides up to 350mA of current sink capability. The device supports both analog and PWM dimming methods and includes a phase-shift function to reduce input capacitor ripple. It is housed in a 28-pin SOIC package.

Feature Summary

• Integrates eight independent high-current sink channels for driving white LED strings
• Includes internal phase-shift functionality to minimize input current ripple
• Supports flexible brightness control through combined analog and pulse-width modulation dimming

Applications

• LCD panel backlighting for mobile devices
• Display backlighting for portable electronics
• High-density LED string driving applications

Procurement Notes

Verify component authenticity through authorized distribution channels due to the presence of obsolete variants within the MP3373 family. Confirm that the specific suffix matches the required package and tape-and-reel specifications. Ensure compatibility with existing PCB footprints for the 28-SOIC form factor before finalizing procurement orders.

Selection Notes

Select this controller when designing systems requiring multiple independent LED channels driven by a single boost topology. It is suitable for applications needing precise current regulation across eight outputs without external BJTs, provided the design utilizes the integrated sink architecture. Consider thermal management requirements associated with the SOIC-28 package.

Part Context

This part belongs to the MP3373 series of WLED controllers. While the base MP3373GY is listed as obsolete, the MP3373GY-P variant represents the specific packaging configuration available through distributors. It shares core electrical characteristics with other members of the series but differs in physical packaging and handling specifications.

Replacement Considerations

Check for direct substitutes within the MP3373 series or newer MPS WLED driver families. Verify pinout compatibility and current sink capabilities against alternative models such as the MP3384 series for similar channel counts.