DC1860B - Schematic

A
B
C
D
E
REVISION HISTORY
DESCRIPTION
APPROVED
ECO REV
-
1
PRODUCTION
DATE
Oct 01, 2012
ZHONGMING Y.
4
4
VOPT
VIN
VIN
10V-15V
7
+
E2
GND
C1
330uF
25V
SANYO
(Opt)
C2
22uF
16V
1210
C3
22uF
16V
1210
C5
0.22uF
100V
0805
R1
16k
1206
R13
16k
1206
4
10
2
8
6
11
5
VOPT+
[email protected]
(Opt)
L1
1.8uH
744318180
Wurth Electronik
T1
SW
E1
E3
C6
4.7uF
100V
1812
C7
4.7uF
100V
1812
VOUT+
E6
R2
11.8k
1%
1206
C8
4.7uF
100V
1812
R14
11.8k
1%
1206
R15
11.8k
1%
1206
R16
11.8k
1%
1206
+
VOUT+
[email protected]
C9
470uF
63V
E7
VOUT-
9
3
EXT_EN
RUN
R4
200k
1%
SHDN
1
2
3
INTVCC
RFB
10
12
11
C11
0.33uF
14
R9
270k
C12
470pF
5
U1
LT3748EMS
R5
36k
JP1
VIN
EN/UVLO
R10
40.2k
1%
C15
6800pF
SS
GATE
TC
SENSE
6
8
82.5k
1%
R7
0 Ohm
7
9
1
750311591
3
D3
VOPT(Opt)
1
Q1
HAT2173H-EL-E
Renesas
R8
R12
0.005
1206
C13
2
2.2nF
250V
1812
CUSTOMER NOTICE
APPROVALS
PCB DES.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
B
C
TECHNOLOGY
RB
APP ENG. ZHONGMING Y.
1630 McCarthy Blvd.
Milpitas, CA 95035 www.linear.com
Phone: (408)432-1900
Fax: (408)434-0507
1
LTC CONFIDENTIAL - FOR CUSTOMER USE ONLY
TITLE: SCHEMATIC
HIGH EFFICIENCY ISOLATED FLYBACK CONVERTER
SIZE
C:\PADS PROJECTS\1860B\REV_B(09-17-12)\SCH\1860B_REV1.DSN
A
3
2
PDS3200-13
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
1
E4
D2
C10
DFLS1100
4.7uF
16V
0805
R6
22
C14
6800pF
GND GND
R11
6.04k
1%
16
VC
REF
12
R3
0 Ohm
1
3
SHDN
2
3
DIODE
E5
D1
1SMB5943BT3
N/A
SCALE = NONE
DATE:
D
IC NO.
REV.
LT3748EMS
DEMO CIRCUIT 1860B
Oct 01, 2012
1
SHEET
E
1
OF
2
A
B
C
3
6
7
4
SW
5
VOPT
4
2
9
10
VOPT
1
47uH
IHLP-4040DZ-ER-470-M11
VISHAY
(Opt)
T3
4
8
2
11
VOUT+
L2
750311456
(Opt)
3
E
DIODE
T2
VIN
D
C16
100uF
63V
(Opt)
3
6
5
3
9
1
12
750311604
(Opt)
2
2
Optional Circuit
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.
RB
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APP ENG. ZHONGMING Y. TITLE:
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
TECHNOLOGY
1630 McCarthy Blvd.
Milpitas, CA 95035 www.linear.com
Phone: (408)432-1900
Fax: (408)434-0507
LTC CONFIDENTIAL - FOR CUSTOMER USE ONLY
SCHEMATIC
HIGH EFFICIENCY ISOLATED FLYBACK CONVERTER
1
SIZE
C:\PADS PROJECTS\1860B\REV_B(09-17-12)\SCH\1860B_REV1.DSN
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
A
B
N/A
SCALE = NONE
C
DATE:
IC NO.
REV.
LT3748EMS
DEMO CIRCUIT 1860B
Oct 01, 2012
D
1
1
SHEET
E
2
OF
2
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