MP4033

TRIAC Dimmable, Primary Side Control

Offline LED Controller with Active PFC

MP4033 Rev. 1.0

www.MonolithicPower.com

1

10/22/2014

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© 2014 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP4033 is a TRIAC-dimmable primary-

side–control, offline LED lighting controller with

active PFC. It is also available for applications

that requires analog dimming with PWM input. It

outputs an accurate LED current for an isolated

lighting application with a single-stage converter.

The proprietary real-current–control method

accurately controls the LED current using

primary-side information.

The

MP4033

implements

power-factor

correction and works in boundary-conduction

mode to reduce MOSFET switching losses.

The adaptive dimmer type detection and phase-

cut-based dimming control achieves good

dimmer compatibility and deep dimming range.

The MP4033 has an integrated charging circuit

at the supply pin for fast start-up without a

perceptible delay.

With the unique control of the driver pin DIM,

the MP4033 supports color temperature and

brightness control for warm sunset dimming

application

The MP4033 has multiple protections that

greatly enhance system reliability and safety,

including output over-voltage protection, output

short-circuit protection, winding short circuit

protection, programmable thermal fold-back

(MSOP10/SOIC14), ZCD pin short circuit

protection, supply-pin under-voltage lockout,

and over-temperature protection.

All fault protections feature auto-restart.

The MP4033 is available in SOIC-8 / MSOP-10

/ SOIC-14 package.

FEATURES

• Primary-Side-Control without Requiring a

Secondary-Side Feedback Circuit

• Adaptive Dimmer Type Detection and

Phase-Cut-Based Dimming Control

• Good Dimmer Compatibility and Deep

Dimming Range

• Analog Dimming with PWM Input

• Fast Start-Up without Perceptible Delay

• Programmable Current Fold-back to

Prolong the LED lifetime (NTC)

• Color Temperature and Brightness Control

for Warm Sunset Dimming application

• Accurate Line & Load Regulation

• High Power Factor

• Operates in Boundary Conduction Mode

• Cycle-by-Cycle Current Limit

• Winding Short Circuit Protection

• Output Over-Voltage Protection

• Output Short-Circuit Protection

• ZCD Pin Short-Circuit Protection

• Over-Temperature Protection

• Available in SOIC-8/MSOP-10/SOIC-14

Package

APPLICATIONS

• Solid-State Lighting up to 50W

• 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.

“MPS” and “The Future of Analog IC Technology” are registered trademarks of

Monolithic Power Systems, Inc.