MP4068

Non-Isolated,TRIAC Dimmable PFC

LED Driver for 120VAC, Up to 10W LEDs

MP4068 Rev. 1.01

www.MonolithicPower.com

1

7/30/2015

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© 2015 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP4068 is a highly integrated TRIAC

dimmable LED driver with a high power factor

(PF). It regulates precisely LED current in non-

isolated lighting applications. Only a single

winding inductor is required to realize the

solution. For low-line (120VAC) applications,

the integrated 500V MOSFET ensures that the

system can withstand a 500V surge test without

MOV or TVS. It features MPS’ proprietary

hybrid operation mode, which is designed to

achieve good dimming performance. The

MP4068 is designed specifically for low-line

input (120VAC) and TRIAC dimmable LED

lighting applications, especially for low cost and

small form factor applications.

The accurate output LED current is achieved by

an internal averaging current feedback loop. An

internal high-voltage regulator makes the

MP4068 start-up quickly without a perceptible

delay. The power de-rating at high temperature

makes the system flicker-free when the ambient

temperature is high.

The MP4068 has protection features such as

VCC under-voltage lockout (UVLO), over-

voltage protection (OVP), and short-circuit

protection (SCP). All of these features make

MP4068 an ideal solution for simple, off-line,

and non-isolated TRIAC dimmable LED lighting

applications.

The MP4068 is available in SOIC8-7A and

SOIC-8 EP packages.

FEATURES

• Excellent TRIAC Dimming Performance

• Lowest Cost BOM

• Constant Current LED Driver

• Integrated 500V MOSFET

• Internal HV Fast Start-Up

• Single Winding Inductor

• High Power Factor(>0.7)

• Good LED Current Accuracy

• Supports Buck/Buck-Boost Topology

• LED Current Foldback at High Temperature

• Thermal Shutdown (Auto Re-Start with

Hysteresis)

• VCC Under-Voltage Lockout with Hysteresis

(UVLO)

• Programmable Over-Voltage Protection

• Output Short-Circuit Protection

• Available in SOIC8-7A/SOIC-8 EP

Packages

APPLICATIONS

•

120VAC, Up to 10W LED Lighting

•

Residential and Commercial Lighting

•

TRIAC Dimmible LED Lighting, A19, GU10,

PAR Lamps

All MPS parts are lead-free, halogen free, and adhere to the RoHS directive. For

MPS green status, please visit MPS website under Quality Assurance.

“MPS” and “The Future of Analog IC Technology” are Registered Trademarks

of Monolithic Power Systems, Inc.