MP3394SGF-Z

Overview

The MP3394SGF-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 across four independent channels with a maximum output of 200 mA per channel. The device operates within an input voltage range of 5 V to 28 V and supports adjustable switching frequencies via an external resistor. Key electrical parameters include a typical switch frequency of 540 kHz, a power dissipation of 1.56 W, and operation over a temperature range of -20°C to +125°C. It is housed in a TSSOP-EP-16 package.

Feature Summary

• Integrates four internal current sources for precise LED string current matching
• Supports PWM or DC input burst mode dimming control
• Features open circuit and short circuit protection mechanisms
• Allows cascading capability by paralleling units on a single supply

Applications

• Backlight driving for large LCD panels
• White LED array illumination for monitors
• LED lighting systems requiring multi-string regulation

Procurement Notes

Verify the specific suffix 'Z' indicates RoHS compliance and lead-free status as per manufacturer standards. Confirm the TSSOP-EP-16 package variant matches design requirements. Check for end-of-life notifications, as some MP3394 variants are marked as not recommended for new designs. Ensure ESD handling protocols are followed due to moisture sensitivity classification.

Selection Notes

Select this component when designing high-density backlight solutions requiring four independent current-regulated channels. The boost topology is suitable for driving series-connected LED strings from low-voltage sources. Consider the thermal performance given the 1.56 W power dissipation rating. Verify that the required switching frequency falls within the adjustable range supported by the external resistor network.

Part Context

This part belongs to the MP3394 series of LED lighting drivers, which are specialized for driving white LEDs in display applications. The series includes variants with different packages such as SOIC-16 and TSSOP-16EP. These controllers are engineered to provide high efficiency and accurate current balancing across multiple LED strings, addressing the needs of modern flat-panel displays.

Replacement Considerations

MP3394SGS-P: Similar 4-channel boost controller in SOIC-16 package. MP3394SGS-Z: Equivalent version in SOIC-16 package with RoHS compliance. MP3394EF-LF-Z: Alternative in TSSOP-EP-16 package, though noted as not recommended for new designs.