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SC4530 データシート(PDF) 17 Page - Semtech Corporation

部品番号 SC4530
部品情報  30V, 300mA Output Micropower Step-Down Switching Regulator
PDF  23 Pages
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メーカー  SEMTECH [Semtech Corporation]
ホームページ  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC4530 データシート(HTML) 17 Page - Semtech Corporation

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SC4530
U1
VOUT
L1
VIN
C3
R4
R1
C4
R5
C2
R2
C5
C1
GND
SW
Figure 12. Suggested PCB Layout for the SC4530
Shortening the traces at the SW and BST nodes reduces
the parasitic trace inductance at these nodes.This not only
reduces EMI, but also decreases switching voltage spikes
at these nodes. Shielding the FB trace from the SW and
the BST nodes with ground traces is a good precaution in
mitigating switching transient disturbance.
Figure 2 shows an example of external component
placement around the SC4530. The exposed pad should
be soldered to a large power ground plane as the ground
copper acts as a heat sink for the device.
Applications Information (Continued)



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