DC1557A - Schematic

5
4
3
2
1
REVISION HISTORY
D3
BAS70JFILM
1
2
D
E1
VIN
10uF
100V
GND
C2
2.2uF
100V
1210
C10
0.1uF
100V
0805
C12
1uF
100V
0805
3
VIN
E3
SHDN
U1
LT3748EMS
1
R3
357k
EN/UVLO
INTVCC
R6
16.5k
RFB
C16
4.7uF
25V
0805
5
16
C
GATE
R12
0
2
D2
BAV20WS
1
2
5
NOTE: UNLESS OTHERWISE SPECIFIED
1. ALL RESISTORS ARE IN OHMS, 0402
ALL CAPACITORS ARE IN MICROFARADS, 0402.
TAIYO YUDEN
FB MJ3216HS800
VIN
FB1
BEAD
R11
0
R10
0.03
0805
E5
VOUT-
SUMIDA
CDRH4D22/HP
L1
10uH
C4
0.01uF,100V
0603
C5
4.7uF,100V
1812
VIN
C6
22uF,100V
SANYO
+
C14
0.033uF
C11
6800pF
C8
470pF
R5
6.04k
B
2220
APPROVALS
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
TECHNOLOGY
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES.
KT
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APP ENG. ZHONGMING Y. TITLE: SCHEMATIC
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
A
NON-OPTO ISOLATED FLYBACK CONVERTER
SIZE
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
C3
47uF,16V
2220
VOUT-
VOUT+
[email protected]
OPTIONAL CIRCUIT
7
CUSTOMER NOTICE
A
E4
C
B
R9
57.6k
D
10
R1
12k
C7
0.1uF
DATE
ZHONGMING Y. 10-04-10
VOUT+
R4
2k
1206
3
Q1
FDMC2674
4
C15
47pF
OPT
14
GND
GND
8
9
TC
11
12
SS
VC
10
RREF
SENSE
PRODUCTION
T1
D1
PULSE, PA2467NL
10MQ100NPbF
WE, 750311439
1
6
2
1
R8
2k
1206
APPROVED
R7
121k
0603
6
2
DESCRIPTION
5
6
7
8
+C1
E2
REV
__
1
2
3
VIN
30V - 75V
ECO
4
3
IC NO.
N/A
SCALE = NONE
DATE:
REV.
LT3748EMS
2
DEMO CIRCUIT 1557A
Monday, October 04, 2010
2
SHEET 1
1
OF 1
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