MP4000DS-LF-P

Overview

The MP4000DS-LF-P is an offline WLED driver controller from Monolithic Power Systems. It utilizes a buck topology with a maximum output current of 400 mA. The device operates within an input voltage range of 8 V to 10.5 V and features a fixed switching frequency of 110 kHz. It supports PWM dimming control and is housed in an SOIC-8 package. The component is rated for operation between -40°C and +85°C, with a power dissipation of 1.3 W.

Feature Summary

• Integrates a high-voltage intelligent LDO for stable internal biasing
• Supports PWM or DC input for burst-mode dimming control
• Features boundary conduction mode for zero-current MOSFET switching
• Includes protection mechanisms such as over-temperature shutdown and hiccup short-circuit protection

Applications

• Offline white LED lighting drivers
• General illumination applications requiring constant current regulation
• AC-powered LED fixtures

Procurement Notes

Verify the specific ordering suffix (P vs Z) against official MPS documentation to ensure correct packaging configuration. Confirm that the component status remains acceptable for your design lifecycle, as it may be subject to change. Cross-reference the datasheet revision history to validate all electrical parameters before finalizing procurement specifications.

Selection Notes

Select this component for designs requiring a buck topology with integrated control logic. Ensure the application input voltage falls within the specified 8 V to 10.5 V range. Consider the thermal requirements given the 1.3 W power dissipation rating. Verify compatibility with external MOSFETs for the floating buck structure and confirm PCB layout constraints for the SOIC-8 package.

Part Context

This part belongs to the MP4000 series of LED lighting driver ICs designed for universal AC input applications. It is specifically engineered for high-efficiency boundary conduction mode operation. The series targets cost-effective solutions for general lighting by integrating necessary control functions into a compact SOIC-8 package.

Replacement Considerations

Refer to official MPS documentation for confirmed substitute part numbers. Do not assume functional equivalence with other models without verifying pinout and electrical parameter alignment.