MP2481DH-LF-P

LED Driver IC Overview

The MP2481DH-LF-P is a white LED driver IC from Monolithic Power Systems, designed for buck and buck-boost topologies. It supports an input voltage range of 4.5V to 36V with a maximum output current of 1.2A. Operating at a fixed frequency of 1.4MHz, the device integrates a 0.30 ohm internal power MOSFET switch. It features both analog and PWM dimming capabilities and is housed in an 8-pin MSOP package with an exposed pad. The component operates within a junction temperature range of -40°C to +125°C.

LED Driver IC Feature Summary

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

LED Driver IC Applications

• Halogen lamp replacement lighting systems
• General LED illumination circuits
• White LED backlighting applications

LED Driver IC Procurement Notes

Verify the specific suffix (LF-P) against the manufacturer's latest datasheet to confirm pinout compatibility and RoHS status. Ensure the ordering information matches the required tape-and-reel or cut-tape packaging format. Cross-reference the 8-MSOP-EP package dimensions with your PCB footprint library to prevent assembly errors during production integration.

LED Driver IC Selection Notes

Select this component when designing circuits requiring a single-output driver capable of handling wide input voltage variations typical of automotive or battery-powered systems. The integrated buck-boost topology simplifies design by eliminating external inductors needed for separate boost stages. Consider the 1.4MHz switching frequency for balancing electromagnetic interference filtering requirements against passive component size constraints.

LED Driver IC Part Context

This part belongs to the MP2481 series of LED drivers manufactured by Monolithic Power Systems. The series focuses on high-efficiency white LED driving solutions suitable for replacing traditional halogen bulbs. The MP2481DH variant specifically utilizes an 8-pin HMSOP/MSOP package, distinguishing it from other series members that may offer different pin counts or thermal packages.

LED Driver IC Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.