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SC461 датащи(PDF) 10 Page - Semtech Corporation

номер детали SC461
подробное описание детали  EcoSpeed짰 DC-DC Buck Controller with Integrated LDO
PDF  31 Pages
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производитель  SEMTECH [Semtech Corporation]
домашняя страница  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC461 датащи(HTML) 10 Page - Semtech Corporation

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background image
SC461
10
RLIM
100nF
0W
100nF
SC461
VLDO
VOUT
DL
VDDA
PGOOD
PSV
VDDP
FB
VIN
PGND
Q1
EN
PGOOD
ENABLE LDO
5V
VIN
VIN
Q2
RTOP
L1
RBOT
1µF
5V
VOUT
RTON
1µF
VLDO
1
2
3(1)
4
5
11
12
13
14
15
6
7
8
9 10
20 19 18
17
16
COUT
+
1µF
154kW
12V to 1.8V @ 10A
CTOP*
PAD
19.6kW
10kW
np
CIN1 CIN2
100nF
Component
Value
Manufacturer
Part Number
Web
CIN1, CIN2
10µF/25V
Murata
GRM32DR71E106KA12L
www.murata.com
edc.sanyo.com
COUT
2x220µF/15mW/4V
Sanyo
4TPE220MF
www.cyntec.com
L1
1.5µH
Cyntec
PCMB1335T-1R5MF
Key Components
www.irf.com
Q1
IRF7821
I.R.
IRF7821
www.irf.com
Q2
IRF7832
I.R.
IRF7832
6.81kW
CSS
3.3nF
CBST
(1)
(2) PSV:
Remove 0W resistor for Power-Save operation.
Connect 0W resistor from PSV pin to VDDA for Forced Continuous Mode operation.
(1) 5V:
Connect VDDA and VDDP to external 5V supply for external bias.
Connect VDDA and VDDP to VLDO for self-biased operation.
Notes:
(2)
Detailed Application Circuit



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