MP24892 – STEP DOWN WLED DRIVER WITH WIDE 6V–45V INPUT VOLTAGE

MP24892 Rev. 1.0

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4

11/3/2011

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PIN FUNCTIONS

TSOT23-5

Pin#

Name Description

1

SW

Internal MOSFET Drain. Connecting the common terminal of inductor and anode of

Schottky to this pin.

2

GND

Ground.

3

EN/DIM

Enable/Dimming. Apply a square wave signal for PWM dimming (refer to application

information). Apply a 0.3V

controls the LED current range from 25% to 200%. Turn off the output current when pulling

this pin below 0.2V. Connect a 1nF

4

RS

LED Current Sense Input. Connect the current sense resistor to this pin.

5

IN

Input Supply. Connect an appropriate decoupling capacitor from IN pin to GND.