20
LTC1143/LTC1143L
LTC1143L-ADJ
LINEAR TECHNOLOGY CORPORATION 1994
1143fa LT/TP 0598 REV A 2K • PRINTED IN USA
+
+
+
+
+
+
P-DRIVE 3
SENSE
+
3
SENSE
–
3
GND3 GND5C
T3
I
TH3
I
TH5
C
T5
SENSE
–
5
SENSE
+
5
P-DRIVE 5
V
IN3
SHUTDOWN 3
SHUTDOWN 5
V
IN5
LTC1143
C
T5
220pF
C
T3
200pF
3
14
15 7 6 11
R
C5
1k
R
C3
510Ω
C
C3
3300pF
C
C5
3300pF
213
10 5
12
9
8
4
1
16
V
OUT5
5V/2A
C
OUT5
220µF
10V
× 2
R
SENSE5
0.05Ω
L2
25µH
D2
MBRD340
C
IN3
,
C
IN5
: AVX TPSD226K025R0200
C
OUT3
,
C
OUT5
: AVX TPSE227M010R0080
L1: COILTRONICS CTX10-4
L2: COILTRONICS CTX25-4
D1
MBRD340
0V = NORMAL
>1.5V = SHUTDOWN
C
IN5
22µF
25V
× 2
C
IN3
22µF
25V
× 3
P1
C
OUT3
220µF
10V
× 3
L1
10µH
R
SENSE3
0.033Ω
V
OUT3
3.3V/3A
V
IN
5.2V TO 14V
P2
0.01µF
0.01µF
0.22µF0.22µF
LTC1143.F13
P1: SILICONIX Si4431DY
P2: SILICONIX Si9435DY
R
SENSE3
: KRL SL-1/2-C1-0R033J
R
SENSE5
: KRL SL-1/2-C1-0R050J
Figure 13. All Surface Mount Dual 5V/2A, 3.3V/3A Converter
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Operation
Adaptive Power is a trademark of Linear Technology Corporation.
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear-tech.com
TYPICAL APPLICATION
U
