PT6937 View Datasheet(PDF) - Princeton Technology

Part Name

Description

Manufacturer

PT6937

White LED Step-Up Converter

Princeton Technology 

Tel: 886-2-66296288

Fax: 886-2-29174598

URL: http://www.princeton.com.tw

White LED Step-Up Converter

PT6937

PIN DESCRIPTION

Pin Name

Description

Pin No.

SW

Switch Pin.

Connect inductor/diode here. Minimize trace area at this pin to reduce EMI.

1

GND Ground Pin. Connect directly to local ground plane.

2

Feedback Pin.

Reference voltage is 95mV. Connect cathode of lowest LED and resistor here.

FB

Calculate resistor value according to the formula:

3

RFB=95mV/ILED

/SHDN

Shutdown Pin.

Connect to 1.5V or higher to enable device; 0.4V or less to disable device.

4

VIN

Input Supply Pin.

Must be locally bypassed.

5

PT6937 V1.1

-3-

March, 2006

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