Monolithic Power Systems MP4031

Description

The MP4031 is a TRIAC and analog dimmable, primary-side–controlled, offline LED lighting controller with active PFC. It can output an accurate LED current for an isolated lighting application with a single-stage converter. The proprietary real-current–control method can accurately control the LED current using primaryside information. It can significantly simplify LEDlighting system design by eliminating secondaryside feedback components and the optocoupler.The MP4031 implements power-factor correction and works in boundary-conduction mode to reduce MOSFET switching losses.The MP4031 has an integrated charging circuit at the supply pin for fast start-up without a perceptible delay.The proprietary dimming control expands the TRIAC-based dimming range.The special current sense structure can implement analog dimming.The MP4031 has multiple protections that greatly enhance system reliability and safety, including over-voltage protection, overload protection,supply-pin under-voltage lockout, and overtemperature protection.All fault protections feature auto-restart.The MP4031 is available in an 8-pin SOIC package.

Features

• Primary-Side-Control without Secondary-Side Feedback
• Internal Charging Circuit at the Supply Pin for Fast Start-Up
• Accurate Line Regulation
• High Power Factor
• Operates in Boundary Conduction Mode
• Flicker-Free, Phase-Controlled TRIAC
• Dimming with Expanded Dimming Range.
• Analog-Dimming Compatible
• Cycle-by-Cycle Current Limit
• Over-Voltage Protection
• Over-Load Protection
• Over-Temperature Protection
• Available in an 8-Pin SOIC Package

Typical applications

• Industrial Lighting
• Residential Lighting

More information

• Datasheet
• IC product information