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SC4612STRT 데이터시트(PDF) 17 Page - Semtech Corporation

부품명 SC4612STRT
상세설명  Wide Input Range High Performance Synchronous Buck Switching Controller
PDF  24 Pages
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제조업체  SEMTECH [Semtech Corporation]
홈페이지  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC4612STRT 데이터시트(HTML) 17 Page - Semtech Corporation

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 2007 Semtech Corp.
www.semtech.com
SC4612
POWER MANAGEMENT
Application Information (Cont.)
Application Circuit 1: Vin = 36V; Vout = 5V @ 20A, Fsw = 250kHz.
Efficiency:
Q1
HAT 2172H
Q2
HAT 2172H
L1
4.7u H@ 22 A
C10
0. 1
C12 A
330 /6.3V
+
_
+
_
Vin=36V
Vout=5@20A
R3
10k
R5
5.36 k
C6
1_cer
R1
560k
C2
430 p
C9
10/50V_cer
C3
0. 1
R6
48.7 k
C4
9.1n
D1
MB R0 540
C8
2.2/10V
C5
1.3n
ILIM
1
PHASE
12
OSC
2
SS/EN
3
FB
5
VDD
6
GND
7
DL
8
DRV
9
BST
10
DH
11
EAO
4
U1
SC4612MLP
R4*
R7
910
C7
1.3n
C13B
10/6.3V_cer
C12B
330 /6.3V
Fsw=250k Hz
C13 A
330 /6.3V
C14B
330/50V_AL
C14 A
330/50V_AL
R4*: if Vin > 28V, then R4 & Z1 provide VDD clamping
Z1*
SC4612: 36Vin, 5Vout @ 20A
80%
82%
84%
86%
88%
90%
92%
94%
96%
98%
100%
0
2
4
6
8
10
12
14
16
18
20
22
Current, (A)



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