DC1569A - Schematic

5
4
3
2
1
REVISION HISTORY
ECO
REV
-
1
APPROVED
DESCRIPTION
PRODUCTION
DATE
Keith S.
04/14/10
D
D
E3
25
JP1
34
INTVCC
28
C10
4.7uF
10V
0603
8
NC
NC
C8
0.01uF
0402
6
VOUT
48V @ 500mA
E7
R5
464k
1%
0402
C12
(Opt)
0402
C
R7
15.8k
1%
0402
1
2
10
35
36
B
GND
GND
GND
C7
2.2uF
100V
1210
31
C9
0.33uF
0603
CUSTOMER NOTICE
APPROVALS
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
PCB DES.
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APP
ENG.
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
A
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
4
3
TECHNOLOGY
RB
Keith S.
C:\ORCADWIN\CAPTURE\1569A\1569A_REV1.DSN
5
C6
2.2uF
100V
1210
12
13
14
32
SS
R3
10k
0402
24
C13
(Opt)
0402
GND
B
GND
NC
VC
15
30
C5
2.2uF
100V
1210
SW
9
SW
20
SW
21
SW
RT
GND
41.2k
1%
0402
16
300kHz
NC
33
C11
(Opt)
0402
LT3958EUHE
NC
R4
SGND
U1
INTVCC
SGND
E9
FBX
17
E2
SGND
SYNC
SGND
E1
INTVCC
38
SENSE1
SYNC
C4
2.2uF
100V
1210
3
R8
0 Ohm
0402
37
E5
3
C3
2.2uF
100V
1210
GND
C14
(Opt)
0402
R2
53.6k
1%
0402
2
NO SYNC
C
1
SENSE2
SGND
SYNC
SYNC
E6
3
2
EN/UVLO
4
E8
EN/UVLO
23
E10
GND
SW
R1
392k
1%
0402
27
GND
1
D1
PDS360
Sumida
C2
2.2uF
100V
1210
C1
2.2uF
100V
1210
VIN
E4
SGND
VIN
11V - 40V
L1
33uH
CDRH127/LDNP-330MC
SCALE = NONE
1630 McCarthy Blvd.
Milpitas, CA 95035 www.linear.com
Phone: (408)432-1900
Fax: (408)434-0507
LTC CONFIDENTIAL - FOR CUSTOMER USE ONLY
A
TITLE: SCHEMATIC
HIGH VOLTAGE BOOST, FLYBACK, SEPIC,
AND INVERTING CONVERTER
SIZE
IC NO.
LT3958EUHE
N/A
DEMO CIRCUIT 1569A
Thursday, June 10, 2010
DATE:
2
SHEET
1
1
REV.
1
OF
1
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