MP2489DN-LF-Z

LED Driver IC Overview

The MP2489DN-LF-Z is a high-efficiency buck LED driver IC from Monolithic Power Systems, designed for driving high-brightness LEDs. It operates within a wide input voltage range of 6V to 60V and delivers an output current of 1A. The device utilizes a hysteresis control structure for precise current regulation without requiring loop compensation. Key electrical parameters include a switching frequency of 600 kHz and a maximum power dissipation of 2.6 W. It supports both PWM and analog dimming functions and includes built-in thermal overload protection. The component is housed in an SOIC-8EP package and is rated for industrial temperature ranges.

LED Driver IC Feature Summary

• Hysteresis control architecture enables stable operation with ultra-fast response times and eliminates the need for external loop compensation components.
• Integrated PWM and analog dimming capabilities allow for flexible brightness control with high contrast ratios.
• Built-in protection mechanisms include thermal shutdown and inherent short-circuit protection to safeguard the LED load and the IC.

LED Driver IC Applications

• Industrial lighting systems
• Automotive interior and exterior illumination
• General-purpose white LED drivers

LED Driver IC Procurement Notes

Verify the specific suffix DN against the manufacturer's latest datasheet to confirm the SOIC-8EP package variant. Ensure that the ordering information matches the required industrial temperature grade and RoHS compliance status. Cross-reference the part number with official MPS documentation to avoid confusion with other pin-compatible or functionally similar devices in the MP2489 family.

LED Driver IC Selection Notes

Select this component when a wide input voltage range up to 60V is required for single-channel LED applications. The integrated 60V power MOSFET simplifies the design by reducing external component count. Consider the SOIC-8EP package for surface-mount assembly needs where moderate thermal performance is sufficient. Verify that the 1A output current aligns with the target LED string configuration.

LED Driver IC Part Context

The MP2489 series comprises several variants including DJ (TSOT-23-5), DQ (QFN-6), and DN (SOIC-8) packages. All share the same core functionality but differ in physical footprint and thermal characteristics. The DN variant specifically offers the SOIC-8EP form factor, which may provide different PCB layout advantages compared to the QFN or TSOT options available in the same product line.

LED Driver IC Replacement Considerations

Direct substitutes within the MP2489 family include MP2489DJ-LF-Z and MP2489DQ-LF-Z. These alternatives offer identical electrical specifications but utilize TSOT-23-5 and QFN-6 packages respectively. Designers must evaluate PCB space constraints and thermal management requirements when choosing between these package options.