MP4068GN-P

Overview

The MP4068GN-P is a non-isolated, TRIAC-dimmable offline LED controller with active PFC. It supports Buck and Buck-Boost topologies using a single-winding inductor. The device integrates a 500V MOSFET for low-voltage (120VAC) surge protection without external MOVs or TVS diodes. Operating from an input voltage range of 4.1 V to 5 V for the control circuit, it features internal high-voltage regulation for fast startup. Key electrical parameters include a maximum power dissipation of 2.6 W and a typical operating frequency of 22 kHz. It provides accurate output LED current regulation via an internal average current feedback loop.

Feature Summary

• Integrates a 500V MOSFET to withstand surge voltages in low-voltage applications without additional protection components
• Supports both Buck and Buck-Boost topologies using a single-winding inductor for simplified design
• Delivers excellent TRIAC dimming performance through MPS proprietary mixed operation mode
• Includes thermal derating to prevent flickering at high ambient temperatures

Applications

• Low-cost non-isolated TRIAC-dimmable LED lighting fixtures
• Small form-factor LED drivers for residential lighting
• Offline LED illumination systems requiring active PFC
• Applications utilizing single-winding inductor solutions

Procurement Notes

Verify the specific suffix GN against the official datasheet to confirm package type and tape/reel specifications. Ensure compatibility with the intended PCB footprint for the SOIC-EP-8 package. Confirm that the component meets RoHS requirements for your target market. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit parts. Check for any recent lifecycle status updates such as NRND or obsolescence notices.

Selection Notes

Select this component for designs requiring integrated TRIAC dimming and active PFC in a non-isolated topology. It is suitable for low-voltage AC inputs where a 500V surge rating is necessary without external clamping devices. Consider the SOIC-EP-8 package for thermal management if power dissipation approaches limits. Evaluate the single-winding inductor requirement against system size constraints. Ensure the application does not require isolation between primary and secondary sides.

Part Context

The MP4068 belongs to the MP4068 series of LED controllers from Monolithic Power Systems. It is designed specifically for cost-sensitive and space-constrained lighting applications. The series offers various package options including TSOT23-5, SOIC-8M, and SOIC-EP-8 variants. This family emphasizes high power factor and precise current regulation for non-isolated architectures.

Replacement Considerations

Officially documented substitutes within the same series include MP4068GN-Z, MP4068GS-P, and MP4068GS-Z. Verify pinout and thermal pad configurations when substituting between different package types like SOIC-8M or TSOT23-5.