MPQ2489DQ-LF-Z

Overview

The MPQ2489DQ-LF-Z is a Monolithic Power Systems LED lighting driver IC designed for white LEDs. It utilizes a Buck topology with an input voltage range of 6 V to 55 V and supports up to 1 A output current. The device operates at a fixed switching frequency of 600 kHz and features both analog and PWM dimming capabilities. Packaged in a QFN-6 form factor, it is rated for a maximum power dissipation of 2.5 W and functions within a temperature range of -40°C to +125°C.

Feature Summary

• Supports analog and PWM dimming methods for precise brightness control
• Integrated open LED protection mechanism for enhanced reliability
• Automotive-grade qualification compliant with AEC-Q100 standards

Applications

• White LED backlighting systems
• General LED illumination applications
• Automotive exterior lighting modules

Procurement Notes

Verify the specific suffix 'AEC1' confirms automotive grade compliance. Ensure the QFN-6 package matches the target PCB footprint. Confirm that the 600 kHz switching frequency aligns with EMI requirements. Check RoHS status against environmental regulations. Validate thermal performance under expected load conditions.

Selection Notes

Select this component when designing circuits requiring high input voltages up to 55 V for white LED strings. The integrated Buck topology simplifies design by reducing external component count. Consider the 1 A output limit for appropriate LED string configurations. The wide operating temperature range suits demanding environments.

Part Context

This part belongs to the MPQ2489 series from Monolithic Power Systems. It is specifically engineered for high-voltage LED driving applications. The device integrates internal switches to minimize board space. It serves as a solution for compact lighting designs requiring robust protection features.

Replacement Considerations

MPQ2489DQ-AEC1-LF-Z is a confirmed substitute part number.