MP3385AGR-P

Overview

The MP3385AGR-P is a four-channel white LED controller from Monolithic Power Systems, designed for LCD backlighting applications. It features a boost topology with an output voltage capability up to 75 V and a maximum output current of 300 mA per channel. The device operates on an input supply voltage ranging from 4.5 V to 33 V. It supports both analog and PWM dimming methods and includes an I2C interface for configuration. The component is housed in a QFN-20 package and functions within a temperature range of -40°C to +125°C.

Feature Summary

• Four independent channels for driving white LEDs in series configurations
• Integrated I2C interface for digital control and monitoring
• Supports both analog and pulse-width modulation dimming techniques
• Boost converter topology suitable for high-voltage LED strings

Applications

• LCD panel backlighting systems
• Portable electronic display devices
• White LED string driver circuits

Procurement Notes

Verify the specific suffix 'P' against the manufacturer's official documentation to confirm lead-free status and RoHS compliance details. Confirm that the QFN-20 package variant matches your PCB footprint requirements. Ensure the design accounts for the specified thermal dissipation limits under maximum load conditions.

Selection Notes

Select this component when a multi-string LED solution with digital I2C control is required. It is appropriate for designs needing high output voltage capabilities from a standard battery or system rail. Consider the thermal performance of the QFN-20 package relative to the expected power dissipation in the target application environment.

Part Context

This part belongs to the MP3385 family of WLED controllers. It shares functional similarities with other members like the MP3385GF-P but differs in package type and specific electrical characteristics. The family is targeted at portable electronics requiring efficient, multi-channel LED management.

Replacement Considerations

The MP3385GF-P is a documented alternative within the same product family, offering similar functionality in a TSSOP-EP-20 package. Verify pinout compatibility and thermal requirements before substitution.