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SC418ULTRT Datasheet(PDF) 7 Page - Semtech Corporation

Part # SC418ULTRT
Description  EcoSpeedTM DC-DC Buck Controller with Programmable LDO
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC418ULTRT Datasheet(HTML) 7 Page - Semtech Corporation

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SC418
7
RILIM
100nF
RPSV(2)
100nF
SC418
VOUT
FBL
DL
VDDA
PGOOD
PSV
VDDP
FB
N/C
PGND
Q1
EN
PGOOD
ENABLE LDO
5V
VIN
VIN
Q2
RFB1
L1
RFB2
10nF
5V
VOUT
+
RTON
RLDO2
RLDO1
1µF
VLDO
1
2
3
4
5
11
12
13
14
15
6
7
8
9 10
20 19 18
17
16
COUT1
+
COUT2
1µF
154kΩ
12V to 1.05V @ 10A, 250kHz
CFF
PAD
11kΩ
10kΩ
100pF
56.2kΩ
CIN1
CIN2
100nF
10kΩ
Component
Value
Manufacturer
Part Number
Web
CIN1, CIN2
10µF/25V
Murata
GRM32DR71E106KA12L
www.murata.com
www.panasonic.com
COUT1, COUT2
220µF/15mΩ/6.3V
Panasonic
EEFUE0J221
www.vishay.com
L1 (option 1)
0.88µH/2.3mΩ
NEC-Tokin
MPC1040LR88C
Key Components
www.irf.com
Q1
IRF7821
I.R.
IRF7821
www.irf.com
Q2
IRF7832
I.R.
IRF7832
10kΩ
Note 2 - RPSV: Use 115kΩ for Ultrasonic operation
Remove RPSV for Power-Save operation
Connect PSV pin to VDDA for Forced Continuous Mode operation
Note 1 - 5V: Connect VDDA/VDDP to external 3.3V or 5V supply for external bias
Connect VDDA/VDDP to VLDO for self-biased operation
L1 (option 2)
1.0µH/2.3mΩ
Vishay
IHLP4040DZER1ROM11
www.nec-tokin.com
Detailed Application Circuit


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