MP3391EF-LF-P

Overview

The MP3391EF-LF-P is an 8-channel boost WLED controller designed for large LCD panel backlighting. It features a current-mode fixed-frequency architecture with an input voltage range of 9V to 35V. Each channel provides up to 120mA output current, with a string-to-string matching accuracy of 2.5%. The device operates within a temperature range of -20°C to +85°C and utilizes a 28-pin TSSOP-EP package.

Feature Summary

• Eight internal current sources ensure precise current balancing across LED strings
• Supports PWM or DC input burst mode dimming for flexible control
• Integrated protection mechanisms include open/short circuit detection and overtemperature shutdown

Applications

• Large size LCD panel backlighting
• White LED array driving
• Display backlight systems

Procurement Notes

Verify the specific suffix EF-LF-P against the manufacturer datasheet to confirm pinout and thermal pad configuration. Confirm that the component meets RoHS compliance requirements for your assembly process. Check for obsolescence status as this part may be subject to lifecycle changes.

Selection Notes

Select this controller when eight independent LED channels are required with high matching precision. Ensure the application input voltage falls within the 9V to 35V range. Verify that the 28-pin TSSOP-EP package fits the PCB layout constraints and thermal management strategy.

Part Context

This component belongs to the Monolithic Power Systems MP3391 series, which specializes in multi-channel white LED controllers. The series is engineered for display backlight applications requiring uniform brightness and efficient power management through integrated boost topology and current regulation.

Replacement Considerations

Consult official MPS documentation for direct pin-compatible substitutes. Cross-reference electrical parameters such as channel count, maximum current per channel, and operating voltage range before considering alternative components.