MP4027

Primary-Side Control,

Offline LED Controller with Active PFC,

NTC and PWM Dimming

MP4027 Rev. 1.02

www.MonolithicPower.com

1

12/9/2014

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© 2014 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP4027 is a primary-side-control, offline

LED lighting controller. In a tiny TSOT23-8

package, it achieves high power factor (PF) and

accurate LED current for isolated, single-power-

stage lighting applications.

This

simplifies

LED-lighting-system

design

significantly by eliminating the secondary-side

feedback components and the optocoupler.

The MP4027 integrates power factor correction

(PFC) and valley switching mode to reduce

MOSFET switching losses.

The MP4027 has NTC function and allows

PWM dimming.

To enhance system reliability and safety, the

MP4027 has multiple internally integrated

protection

features,

including

over-voltage

protection (OVP), short-circuit protection (SCP),

primary-side over-current protection (OCP),

brown-out

protection,

over-temperature

protection (OTP), cycle-by-cycle current limit,

VCC under-voltage lockout (UVLO), and auto-

restart function.

FEATURES

 Real-Current Control without Secondary-

Feedback Circuit

 <2% Line/Load Regulation

 NTC Thermal Current Fold-Back

 PWM Dimming Available

 High PF (≥0.9) over Universal Input Voltage

 Valley Switching Mode for Improved

Efficiency

 Brown-Out Protection

 Over-Voltage Protection

 Short-Circuit Protection

 Over-Temperature Protection

 Primary-Side Over-Current Protection

 Cycle-By-Cycle Current Limit

 VCC Under-Voltage Lockout Protection

 Auto-Restart Function

 Available in TSOT23-8 Package

APPLICATIONS

 Solid-State Lighting

 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.

TYPICAL APPLICATION CIRCUIT

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