FAN5346 データシートの表示（PDF） - Fairchild Semiconductor

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FAN5346

Series Boost LED Driver with PWM Dimming Interface

Fairchild Semiconductor 

Pin Configuration

Figure 3. Pin Assignments, Top View

Pin Definitions

Pin #

5

1

4

3

6

2

Name

VOUT

VIN

EN

FB

SW

GND

Description

Boost Output Voltage. Output of the boost regulator. Connect the LEDs to this pin. Connect COUT

(output capacitor) to GND.

Input Voltage. Connect to the power source and decouple with CIN to GND.

Enable Brightness Control. Program dimming levels by driving pin with the PWM signal.

Voltage Feedback. The boost regulator regulates this pin to 0.250V to control the LED string current.

Tie this pin to a current setting resistor (RSET) between GND and the cathode of the LED string.

Switching node. Tie inductor L1 from VIN to SW pin.

Ground. Tie directly to a GND plane.

© 2011 Fairchild Semiconductor Corporation

FAN5346 • Rev. 1.0.1

3

www.fairchildsemi.com

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