DC968A-D - Schematic

4
Q10
PZTA42 VU1
3
L2
1.5mH
DO1607B-155ML-S
D3
BAS516
SW0
U2
LTC4440ES6-5
TS 4
R15
115K
R42
0
1 COMP
2 FB=1.23V
3 ROSC
4 SYNC
D1
BAS516
SOUT 16
VIN 15
1
0805
D7
OPT
RCS1
0.010
2010
220pF
C9
R20
100pF 43.2K
5 SS/MAXDC DELAY 12
6 VR=2.5V
OC 11
7 SD/VSEC ISENSE 10
C10
0.1uF
R22
13.3K
8 GND
R29
22K
2 D10
BAT760
BLANK 9
R23
1.5K
R24
82K
R6
OPT
C7
220pF
C8
100pF
VU1
CU1
4.7uF
16V
1206
6
2
5
3
4
16V
4
1
3
2
R30
1.2K
B
+5V
VU1
R43
1K
1
R47
10K
1
2
3
4
5
6
7
8
R18
10K
C27
0.1uF
C28
0.1uF
C30
100pF
R48
150
U7
1 VCC BOOST 6
2 GND
TG 5
3 INP
TS 4
R45
10K
C29
0.1uF
2
VAUX
R31
10
C15
2200pF
250V
1812
C12
470pF
FG
GND 6
FG 5
C14
1uF
10V
0805
R27
270
U4
LT4430ES6
10V
1 VCC OPTO 6
C16
0.22uF
2 GND COMP 5
3 OC
R19
38.3K
1%
2 CS- TIMER 7
3 CG
C
SYNC
1 CS+ SYNC 8
R21
10K
FB 4
C19
1uF
10V
0805
C17
R34
0.015uF 16.9K
1%
C18
OPT
R35 +VO1
280K
1% 0805
C24
OPT
B
R38
6.19K
1%
D14
BAS516
1
VERSIONS
-A
NOTES: UNLESS OTHERWISE SPECIFIED
1. ALL RESISTORS ARE IN OHMS, 0603.
ALL CAPACITORS ARE IN MICROFARADS, 0603.
LTC4440ES6
CUSTOMER NOTICE
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
CIRUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
APPROVALS
DRAWN:
3
VOUT
[email protected]
[email protected]
-B
18V-36V
36V-72V
[email protected]
-D
36V-72V
[email protected]
TECHNOLOGY
KIM T.
VIN
34V-75V
-C
CONTRACT NO.
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
TITLE:
CHECKED:
APPROVED:
ENGINEER: GORAN P.
DESIGNER:
ISOLATED DC/DC POWER CONVERTER
SIZE
A
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
4
VAUX
U5
LTC3900CS8
* FOR ASSEMBLY
1
2
3
C26
220pF
D13
PDZ5.1B
A
5
SW1 R16
56K 0805
D9
PDZ9.1B
2
1
4
2
OUT R46
2.2K
0805
C5
0.22uF
50V
0805
Q13
IRF6217
R44
11.3K
U3
74VHC123AMTC
A1 VCC 16
B1 RC1 15
R1
C1 14
-Q1
Q1 13
Q2
-Q2 12
R2 11
C2
RC2 B2 10
GND A2 9
R10
0
L3
OPT
D11
BAS516
1
2
SW0 C25
0.047uF, 200V
1206
-VOUT
Q9 VAUX
0 OHM
R17
560
5
6
7
8
D12
BAS516
2
1
TP5
4 VCC
U6
PS2801-1
D
35V
D8
BAS21H
C6
0
0805
SYNC
*
CSYS
VAUX
R26
220
C23
1uF
VFB
OPTIONAL CIRCUIT
0805
T2
PE-68386
PULSE ENG.
1
+VOUT
+ 330uF
TP6
D6
BAS21H
2
1
C4
680PF,100V
TP4
CG
C11
OPT
C13
0.47uF 10V
Q3
Si7846DP
VU1
R33
158K
+VB R28
442K
R8
2.2
R9
47
R3
41.2
1% OUT
OUT 14
PGND 13
Q2
HAT2174H
C2
OPT
1206
1
R14
33K
U1
LT1952EGN-1
3
2
+VO1
CO1
CO2 OPT
CO3 OPT
6.8uF
50V
TDK
1812
CG
2
3 INP
2
2
3
TG 5
C21
R13
22K
VR2 R32
383K
2 GND
FG
4
5
Q1
PHM21NQ15T
R7
0
9
10
11
TP3
L1
39uH
PA2050.393
2
5
1
4
3
SW1
1
1 VCCBOOST 6
C3
1uF
16V
Q12
BC856T
1
6
+VIN
R5
10
VFB
1
T1
PA0856.003
7
8
1
1
D5
PDZ9.1B
VU1
C
D2
BAS516
1
2
VR2
2
-VIN
R11
82K
CIN1
CIN2
CIN3
2.2uF
100V
TDK
1812
TP2
4
2
2
1
*
D
+VB
R1
2.2
2
+VIN
1 1
+VIN
TP1
3
2
5
DATE:
2
DWG NO.
DC968A2-D
REV
LT1952EGN-1, LTC3900CS8, LT4430ES6
Tuesday, February 20, 2007
SHEET 1
1
A2-D
OF 1
A
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