MP4653—REAL LIPS CC/CV MODE LLC TV LED DRIVER

MP4653 Rev 1.01

www.MonolithicPower.com

14

6/28/2012

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© 2012 MPS. All Rights Reserved.

PIN FUNCTIONS

(continued)

Pin #

Name

Description

12

VLED1

Voltage feedback of LED string1. VLED1, VLED2, VLED3 and VLED4 corporate for the

protection of the LED driver stage. The maximum voltage of these pins and the voltage

difference among these pins are detected for LED stage protection.

If the number of LED strings is less than 4, connect the left pins together with others.

13

A-Dim

Analog dimming input. 0~1.18V sets the LED current from 0 to 100%. If not used pull it high

to VCC through a 100kΩ resistor.

14

PWMIN

PWM Dimming control Input. Apply a 100Hz to 2kHz PWM signal to this pin for PWM

dimming

15

VIN

16

PWMOUT Output of the driving signal for the dimming MOSFET.

17

VCC

Power Supply for the gate driver and internal circuit. Bypass this pin with a ceramic

18

GL

Driving signal output, 180 degree phase shifted of GR

19

GND

Ground Reference.

20

GR

Driving signal output, 180 degree phase shifted of GL