MP4068 – HIGH PF, NON-ISOLATED, TRIAC DIMMABLE LED DRIVER

MP4068 Rev. 1.01

www.MonolithicPower.com

11

7/30/2015

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

© 2015 MPS. All Rights Reserved.

PIN FUNCTIONS

Pin #

SOIC8-7A

Pin #

SOIC-8 EP

Name

Description

1

1

VCC

Power Supply

. Supply power for all the control circuits. Typically, connect

VCC to an external 2.2uF capacitor.

2,5,6

3

GND

Ground

. Virtual Ground of the IC.

3

2

OVF

Output Voltage Feedback

. The over-voltage condition is detected on

the OVP is triggered, and the chip shuts down.

4

4

CS

Current Sense of the Internal Power MOSFET

. Connect a resistor from

CS to GND to sense the current through the inductor. When the voltage on

CS exceeds 0.46V, the internal MOSFET is turned off. If the start-up time

exceeds the maximum on time (9us), the internal MOSFET is turned off

(even though the voltage on CS has not reached 0.46V).

8

7

HV

High-Voltage Input of the Internal Power MOSFET

. HV is also the input

of the internal high-voltage current source.

5,6,8

NC

No Connection

. Do NOT connect.