The Future of Analog IC Technology
Offline LED Controller with Active PFC
The MP4030A is a TRIAC-dimmable, primary-
side-control, 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 primary-side information. It
can significantly simplify LED lighting system
design by eliminating secondary-side feedback
components and the optocoupler.
The MP4030A implements power-factor
correction and works in boundary-conduction
mode to reduce MOSFET switching losses.
The MP4030A has an integrated charging circuit
at the supply pin for fast start-up without a
The proprietary dimming control expands the
TRIAC-based dimming range.
The MP4030A features multiple protections
including over-voltage protection (OVP), short-
circuit protection (SCP), primary-side over-
current protection (OCP), supply-pin under-
voltage lockout (UVLO), and over temperature
protection (OTP). All of which not only simplifies
circuit design but also enhances system reliability
and safety greatly. All fault protections feature
The MP4030A is available in an 8-pin SOIC
• Primary-Side-Control without Requiring a
Secondary-Side Feedback Circuit
• Internal Charging Circuit at the Supply Pin for
• Accurate Line & Load Regulation
• High Power Factor and Improved THD
• Flicker-Free, Phase-Controlled TRIAC
Dimming with Expanded Dimming Range 1%
to 100% Full Range
• Operates in Boundary Conduction Mode
• Cycle-by-Cycle Current Limit
• Primary-Side, Over-Current Protection
• Over-Voltage Protection
• Short-Circuit Protection
• Over-Temperature Protection
• Available in an 8-Pin SOIC Package
• Solid-State Lighting, including:
• Industrial and Commercial Lighting
• Residential Lighting
All MPS parts are lead-free and adhere to the RoHS directive. For MPS green
status, please visit MPS website under Products, Quality Assurance page.
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Monolithic Power Systems, Inc.
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