MP2481DH-LF-Z

LED Driver IC Overview

The MP2481DH-LF-Z is a Monolithic Power Systems LED lighting driver IC designed for white LED applications. It features a buck-boost topology capable of regulating output current up to 1.2A with a maximum supply voltage of 36V and a minimum of 4.5V. The device operates at a fixed switching frequency of 1.4MHz, enabling the use of compact passive components. It supports both analog and PWM dimming methods for brightness control. The component is housed in an 8-pin MSOP package with an exposed pad and is rated for operation within a temperature range of -40°C to +125°C.

LED Driver IC Feature Summary

• Integrates a unique step-up/down buck-boost operation to maintain constant LED current across varying input voltages
• Includes a low on-resistance internal power MOSFET switch to minimize conduction losses
• Supports flexible brightness control through combined analog and pulse-width modulation (PWM) dimming capabilities

LED Driver IC Applications

• White LED backlighting systems
• General LED illumination circuits
• Automotive lighting modules

LED Driver IC Procurement Notes

Verify the specific suffix against official manufacturer documentation to confirm exact packaging and environmental compliance status. Ensure the ordering part number matches the required tape-and-reel or cut-tape configuration. Cross-reference the datasheet revision date to confirm compatibility with your design specifications before finalizing procurement orders.

LED Driver IC Selection Notes

Select this component when designing circuits requiring a single-inductor solution for wide input voltage ranges. It is suitable for applications needing high efficiency and compact board space due to the high switching frequency. Consider the thermal performance of the exposed pad package for proper heat dissipation in enclosed environments.

LED Driver IC Part Context

This part belongs to the MP2481 series from Monolithic Power Systems, which focuses on efficient LED driving solutions. The MP2481 family utilizes advanced power management techniques to deliver stable current regulation. It is distinct from standard buck or boost converters by its integrated capability to handle both topologies simultaneously for optimal LED performance.

LED Driver IC Replacement Considerations

The MP2481DH-LF-P is a verified substitute part number offering identical electrical characteristics and functionality. Verify pinout compatibility and package dimensions when transitioning between the LF-Z and LF-P suffixes.