SC1408IS.TR(2000) データシートの表示（PDF） - Semtech Corporation
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SC1408IS.TR Datasheet PDF : 12 Pages
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LOW VOLTAGE, BOOST DC-DC
CONTROLLER
August 22, 2000
Fig. 1: Typical Application - Boost Configuration
SC1408
Vin=3.3V
L1 22uH
COILCRAFT DO3316P-223
C2
100uF +
U1
2 BST
GATE 1
4 SHDN ISENSE 8
5
REF
3
FB
7 GND
AGND 6
C5
0.1uF
SC1408IS
D1
B130T
Q1
IRLR024N
R3
31.6k
Vout=5V
C9
(1)
+ C8
100uF
R2
0.05Ohm
R4
10.0k
+
C3
100uF
(1) See Component Selection
Fig. 2: Typical Application - Buck/Boost (SEPIC) Configuration
D2 1N4148
Vin=2.7V to 6V
C2
100uF +
L1A 22uH
2
1
C4
0.1uF
U1
2 BST
GATE 1
4 SHDN ISENSE 8
5 REF
FB 3
7 GND
AGND 6
C5
0.1uF
SC1408IS
C1
100uF
+
D1
B130T
Q1
IRLL3303
R3
31.6k
C9
(1)
4
R2
0.05Ohm
L1B
22uH
R4
10.0k
3
L1A/L1B IS COUPLED INDUCTOR
PULSE PE-53718 OR
EQUIVALENT
(1) See Component Selection
Vout=5V
+ C8
100uF
+
C3
100uF
© 2000 SEMTECH CORP.
5
652 MITCHELL ROAD NEWBURY PARK CA 91320
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