MP3373GM-Z

Overview

The MP3373GM-Z is an 8-channel Boost WLED controller from Monolithic Power Systems, designed for high-density backlighting applications. It operates with a switching frequency of 785 kHz and supports a maximum duty cycle of 90%. The device regulates output voltage up to 10 V and provides 350 mA per channel. It functions within an input supply range of 9 V to 40 V and includes phase-shift functionality to minimize input current ripple. The controller integrates external current sink BJTs for precise current regulation and features a shutdown pin for power management.

Feature Summary

• Integrates phase-shift function to reduce input current ripple across multiple channels
• Supports external current sink BJTs for accurate channel current regulation
• Provides independent control for eight distinct LED output channels
• Operates at a fixed 785 kHz switching frequency for efficient power conversion

Applications

• High-density LCD backlighting in mobile devices
• Multi-zone LED illumination systems
• Professional display panel driving circuits

Procurement Notes

Verify the specific suffix Z for RoHS compliance status against the manufacturer's latest documentation. Confirm the TSSOP-28 package dimensions match your PCB footprint requirements. Ensure the design accommodates the required external BJT components for proper current sinking operation as specified in the official datasheet.

Selection Notes

Select this component when designing systems requiring eight independent LED channels driven by a single controller. It is suitable for applications needing wide input voltage compatibility and low input ripple through phase shifting. Consider the thermal performance of the TSSOP-28 package relative to the total power dissipation of all active channels.

Part Context

This part belongs to the MP3373 series of WLED controllers from Monolithic Power Systems. It is categorized under Switching Controllers and PMIC solutions. The device is specifically engineered for multi-channel LED driving, distinguishing it from single or dual-channel drivers in the broader portfolio.

Replacement Considerations

Check for direct substitutes within the MP3373 family that may offer different pin configurations or channel counts. Verify compatibility with existing external BJT selections if replacing with similar boost controllers from other manufacturers.