MP2489DQ-LF-Z

LED Driver IC Overview

The MP2489DQ-LF-Z is a high-efficiency buck LED driver IC from Monolithic Power Systems, designed for driving high-brightness white LEDs. It operates within a wide input voltage range of 6 V to 60 V and delivers an output current of 1 A. The device utilizes a hysteresis control structure for precise current regulation without requiring external loop compensation. Key electrical parameters include a switching frequency of 600 kHz and a maximum power dissipation of 2.5 W. It supports both analog and PWM dimming functions and features built-in thermal overload protection. The component is housed in a compact QFN-6 (3x3 mm) package suitable for surface mount applications.

LED Driver IC Feature Summary

• Hysteresis control architecture ensures stable operation and rapid response without external compensation components
• Integrated PWM and analog dimming capabilities with a high dimming ratio for flexible brightness control
• Built-in open LED and short circuit protection mechanisms safeguard the load and device integrity

LED Driver IC Applications

• General illumination systems using white LEDs
• Automotive interior lighting applications
• Industrial signage and display backlighting

LED Driver IC Procurement Notes

Verify the specific suffix DQ corresponds to the QFN-6 package when sourcing. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor declarations. Ensure the ordering quantity aligns with standard reel packaging requirements specified by the supplier. Cross-reference the datasheet revision date to guarantee compatibility with current design specifications.

LED Driver IC Selection Notes

Select this component for designs requiring a wide input voltage range up to 60 V with a single-channel 1 A output. The integrated power MOSFET simplifies the bill of materials by reducing external component count. Consider the QFN-6 package for space-constrained layouts. Verify that the application environment remains within the specified operating temperature range of -40°C to +125°C for reliable performance.

LED Driver IC Part Context

This part belongs to the MP2489 family of LED drivers manufactured by Monolithic Power Systems. The family includes variants such as MP2489DJ-LF-Z and MP2489DN-LF-Z, which differ primarily in package type and pinout configuration. All variants share the core hysteresis control topology and electrical characteristics, offering designers flexibility in PCB layout and thermal management strategies while maintaining consistent drive performance.

LED Driver IC Replacement Considerations

MP2489DJ-LF-Z and MP2489DN-LF-Z are direct functional equivalents within the same series. Substitution requires verifying package compatibility, as these alternatives utilize TSOT-23-5 and SOIC-8E footprints respectively. Electrical parameters remain identical, ensuring seamless integration into existing designs without circuit modification.