MP4001

– UNIVERSAL INPUT HIGH BRIGHTNESS WLED DRIVER

MP4001 Rev 1.02

www.MonolithicPower.com

4

5/1/2018

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PIN FUNCTIONS

Pin #

Name

Description

1

DRIVE

External MOSFET drive output. The zero current crossing signal is detected from this pin.

2

CS

LED current sense input. Connect the current sense resistor that programs the LED current.

3

BOS

Burst Oscillator Setting. For the DC input burst dimming, connect a capacitor from this pin to

GND to program the burst dimming frequency. For the external PWM dimming, connect a

resistor such as 300

kΩ from this pin to GND and apply the logic signal to the DIM pin.

4

GND

Ground.

5

DIM

Dimming Control Input. For DC input burst dimming control, the voltage of 0V to 2.42V at

DIM pin linearly sets the burst-mode duty cycle from minimum to 100%. For external PWM

dimming control, connect the PWM signal to DIM pin. Open DIM pin or pull it high if no

dimming control is applied.

6

IN

Input Supply Pin. By connecting the IN pin to AC input as power source of VCC.

7

VCC

Internal regulated supply voltage output. Must be locally bypassed. The VCC voltage

provides the power for IC logic and driving external MOSFET.

8

VS

Test pin. Connect to GND for normal operation.