FP6745CS6C datasheet(2/7 Pages) FITIPOWER

No de pièce	FP6745CS6C

Description	High-Efficiency, 40V White LED Driver with Dimming Control

PDF	7 Pages

Scroll/Zoom	100%

Fabricant	FITIPOWER [Fitipower Integrated Technology Inc.]

Site Internet	http://www.fitipower.com/en_US/index.asp

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FP6745C-0.1-SEP-2011

FP6745C

85T

fitipower integrated technology lnc.

Typical Application Circuit

FP6745C

VIN

GND

VIN

LED10

Enable/

Dimming Control

LED1

2.8V~5.5V

CIN

COUT

RFB

10µF

6.8µH

0.47µF

Figure 2. Typical Application Circuit of FP6745C

Functional Pin Description

Pin Name

Pin Function

Switch Pin.

Connect inductor/diode here.

Minimize trace area at this node to reduce EMI.

GND

Ground Pin.

Connect directly to local ground plane.

Feedback Pin.

Reference voltage is 300mV.

Connect cathode of the lowest LED and resistor here.

Calculate resistor value according to the formula: RFB=VFB/ILED

Enable and dimming control

1. Enable: Logic high enables the device; logic low forces the device into shutdown mode.

2. Analog dimming control: apply 0.7V to 1.4V DC voltage signal.

3. Digital dimming control: apply external 100Hz to 50kHz PWM pulse signal with amplitude greater than 1.5V.

VIN

Input Supply Pin.

Must be locally bypassed.

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