MP2481DH-LF

LED Driver IC Overview

The MP2481DH-LF is a Monolithic Power Systems LED lighting driver IC featuring a buck-boost topology. It supports an input voltage range of 4.5 V to 36 V and delivers up to 1.2 A output current. The device operates at a switching frequency of 1.4 MHz and includes analog and PWM dimming capabilities. Packaged in an 8-pin HMSOP with an exposed pad, it functions as a DC-DC regulator suitable for white LED applications.

LED Driver IC Feature Summary

• Supports unique step-up/down operation via buck-boost mode
• Integrates a low-resistance internal power MOSFET switch
• Enables precise brightness control through combined analog and PWM dimming

LED Driver IC Applications

• White LED backlighting for LCD panels
• General LED illumination systems
• Automotive lighting circuits

LED Driver IC Procurement Notes

Verify the specific suffix (LF-Z or LF-P) when ordering, as packaging formats differ between cut tape/reel options. Confirm RoHS compliance status and ensure the selected package variant matches your PCB footprint requirements. Cross-reference official datasheets for thermal performance data under your specific load conditions before finalizing procurement.

LED Driver IC Selection Notes

Select this component for designs requiring wide input voltage flexibility without external inductors for boost operations. Ensure the 1.4 MHz frequency aligns with EMI constraints. Verify that the 1.2 A current limit meets the target LED string requirements. Consider the 8-pin HMSOP package size for space-constrained layouts.

LED Driver IC Part Context

This part belongs to the MP2481 series from Monolithic Power Systems, designed specifically for high-efficiency LED driving. It integrates power switches to minimize external component count. The series targets portable and automotive displays where compact size and wide input ranges are critical for system reliability.

LED Driver IC Replacement Considerations

Check for direct pin-compatible alternatives within the MPS portfolio. Verify if newer revisions offer improved thermal characteristics or updated packaging standards. Ensure any substitute maintains the same buck-boost functionality and dimming interface compatibility.