APW7071(2008) 데이터 시트보기 (PDF) - Anpec Electronics

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APW7071
(Rev.:2008)

Step-Up Converter for 4 Series White LEDs Driver

Anpec Electronics 

APW7071

Application Information (Cont.)

Diode selection (Cont.)

Recommended diode

Part No.

MSCD052

Reverse Voltage

20

Vender

Zowie

Layout consideration

For all switching power supplies especially with high

peak currents and switching frequency, the layout is an

important step in the design. If the layout is not carefully

done, the regulator may show noise problems and duty

cycle jitter.

1.The input capacitor must be placed close to the device,

which can reduce copper trace resistance and effect

input ripple of the IC .

2.The inductor and diode should be placed as close as

possible to the switch pin to minimize the switching

noise.

3.The feedback pin and feedback network should be far

away from the inductor and shielded by a ground plane

or trace to minimize the noise.

Copyright © ANPEC Electronics Corp.

11

Rev. A.3 - Jul., 2008

www.anpec.com.tw

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