28
LTC1436A
LTC1436-PLL-A/LTC1437A
14367afb
LT/TP 0605 REV B 1K • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 1996
TYPICAL APPLICATION
U
LTC1437A 5V/3A Fixed Output with 12V Auxiliary Output
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
+
+
+
+
PLL LPF
C
OSC
RUN/SS
LBO
LBI
I
TH
SFB
SGND
V
PROG
V
OSENSE
NC
SENSE
–
SENSE
+
AUXON
PLLIN
POR
BOOST
TGL
SW
TGS
V
IN
INV
CC
DRV
CC
BG
PGND
EXTV
CC
AUXDR
AUXFB
C
LP
0.01µF
C
IN
22µF
35V
× 2
EXT
CLOCK
C
SEC
3.3µF
35V
C
OUT
100µF
10V
× 2
C
C
510pF
INT V
CC
M1
IRF7403
M2
IRF7403
MBRS140T3
SGND
(PIN 8)
1436 TA06
T1
22µH
1:2.2
47k
R
SENSE
0.03Ω
MBRS1100T3
V
IN
5.5V TO 28V
MMBT2907
V
OUT2
12V
0.2A
V
OUT
5V
3A
24V
M3
IRLML2803
4.7µF
3.3µF
R6
1M
T1: DALE LPE6562-A092
R5
100k
0.1µF
CMDSH-3
LTC1437A
1000pF
AUX
ON/OFF
R
C
10k
R
LP
10k
C
C2
51pF
C
SS
0.1µF
C
OSC
39pF
+
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Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
