White LED Set-up Converter

EC4501

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3F27N-Rev.P001

Pin Assignments

Pin Description

Pin Number

Pin Name

Description

1

SW

Power Switch Output. Connect the inductor and the blocking Schottky diode to SW.

2

GND

Ground

3

FB

Feedback input pin. The reference voltage at this pin is 104mV. Connect the cathode

of the lowest LED to FB and a current sense resistor between FB and GND.

4

EN

Enable pin. A high input at EN enables the device and a low input disables the

devices. When not used, connect EN to the input source for automatic startup.

5

OV

Over Voltage Input. OV measures the output voltage for open circuit protection.

Connect OV to the output at the top of the LED string.

6

IN

Input Supply Pin. Must be locally bypassed.