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SC1408IMSTRT Datasheet(PDF) 9 Page - Semtech Corporation

Part # SC1408IMSTRT
Description  Low Voltage, Boost DC-DC Controller
PDF  12 Pages
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC1408IMSTRT Datasheet(HTML) 9 Page - Semtech Corporation

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 2005 Semtech Corp.
www.semtech.com
POWER MANAGEMENT
SC1408
Typical Application Circuit (Cont.)
Fig.1: Typical Application - Boost Configuration
D1
B130T
L1 22uH
C9
See Text
U1
SC1408CS
8
1
2
3
4
5
6
7
ISENSE
GATE
BST
FB
EN
REF
AGND
GND
+
C3
100uF
+
C8
100uF
R3
See Table
Vin to 16.5V OUT
R2
0.1Ohm
Q1
IRLR024N
R4
10.0k
C5
0.1uF
+
C2
100uF
1.8V-16.5V IN
Coilcraft DO3316P-223
Fig.2: Typical Application - Buck/Boost (SEPIC) Configuration
D1
B130T
R2
0.1Ohm
R3
See Table
+
C8
100uF
D2 1N4148
Q1
IRLL3303
L1A 22uH
1
2
R4
10.0k
C9
See Text
0V TO (16.5V-Vin) OUT
L1B
22uH
4
3
C5
0.1uF
1.8V TO 5V IN
U1
SC1408CS
8
1
2
3
4
5
6
7
ISENSE
GATE
BST
FB
EN
REF
AGND
GND
C4
0.1uF
+
C2
100uF
+
C3
100uF
L1A/L1B IS COUPLED INDUCTOR
PULSE PE-53718 OR
EQUIVALENT
+
C1
100uF



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