FP6745CS6C datasheet(6/7 Pages) FITIPOWER

Part #	FP6745CS6C

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

PDF	7 Pages

Scroll/Zoom	100%

Manufacturer	FITIPOWER [Fitipower Integrated Technology Inc.]

Direct Link	http://www.fitipower.com/en_US/index.asp

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6 / 7 page

FP6745C-0.1-SEP-2011

FP6745C

85T

fitipower integrated technology lnc.

Applications Information (Continued)

Layout Consideration

The proper PCB layout and component placement

are critical for all switching regulators.

The careful

attention should be taken to the high-frequency, high

current loops to prevent electromagnetic interference

(EMI) problems.

Here are some suggestions to the

layout of FP6745C design.

a. The input capacitor should be located as closed as

possible to the VIN and GND pin.

b. Minimize the distance of all traces connected to the

SW node.

The external components, COUT, L1,

and D1 should be placed as close to the device as

possible with short and wide route to obtain

optimum efficiency.

c. Keep the noise-sensitive feedback circuitry away

from the switching node.

Place feedback resistor

as close as possible to FB pin.

d. The ground terminal of COUT must be located as

closed as possible to GND pin.

Place COUT next

to Schottky diode.

In Backlight application, the system

engineers

usually place the COUT close to the LED connector.

The far COUT of the FP6745C may result in variable

VFB.

Add one more COUT close to FP6745C is

recommended.

FP6745CS6C Datasheet(PDF) 6 Page - Fitipower Integrated Technology Inc.