MP3394SGY-Z

Overview

The MP3394SGY-Z is a four-channel white LED driver IC from Monolithic Power Systems, designed for LCD panel backlight applications. It utilizes a boost topology to regulate current through external MOSFETs, supporting an input voltage range of 5V to 28V. The device integrates four internal current sources capable of delivering up to 200mA per channel with a matching precision of 2.5%. It operates at a programmable switching frequency between 140kHz and 670kHz via an external resistor. The component features comprehensive protection mechanisms including open/short circuit detection, adjustable overvoltage protection, under-voltage lockout, and thermal shutdown.

Feature Summary

• Integrates four independent high-side current sources for precise WLED array regulation
• Supports cascading configuration by paralleling multiple units on a single power supply
• Enables flexible dimming control through external PWM signals or DC input modes
• Provides robust protection against LED faults, overvoltage conditions, and overheating

Applications

• Backlight drivers for large LCD panels in monitors and televisions
• White LED arrays requiring high current matching accuracy
• Portable electronic devices utilizing battery-powered LED illumination
• Multi-string LED lighting systems needing scalable channel expansion

Procurement Notes

Verify the specific suffix code to confirm package type and reel quantity specifications. Ensure compatibility with the target PCB footprint, as variants exist in SOIC-16 and TSSOP-16EP packages. Confirm moisture sensitivity level handling requirements during assembly. Cross-reference the exact part number with official manufacturer documentation to validate electrical characteristics and pinout assignments before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring four synchronized LED channels with tight current matching. It is suitable for applications needing a wide input voltage range and adjustable switching frequencies to optimize efficiency. Consider its cascading capability if the design demands more than four channels without additional controllers. Evaluate the thermal performance within the chosen package style to ensure reliable operation under maximum load conditions.

Part Context

This device belongs to the MP3394 series of LED lighting drivers manufactured by Monolithic Power Systems. The series focuses on providing efficient solutions for driving white LEDs in display backlights. The SGY variant specifically denotes a particular package and tape-and-reel configuration within the broader product family, maintaining consistent core electrical functionality across the series.

Replacement Considerations

Direct substitutes include other MP3394 variants such as MP3394SGS-P or MP3394SGF-Z, which share identical electrical specifications but differ in packaging or reel quantities. Verify that any replacement maintains the same 16-pin form factor and pinout compatibility to ensure seamless integration into existing designs.