DC968A-B - Schematic

4
D3
BAS516
1 VCCBOOST 6
C3
1uF
16V
TG 5
3 INP
TS 4
0
1 COMP
2 FB=1.23V
3 ROSC
4 SYNC
R3
0
SOUT 16
VIN 15
OUT 14
PGND 13
C9
R20
100pF 66.5K
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
BLANK 9
R23
910
R24
82K
R6
OPT
C7
220pF
C8
100pF
VU1
CU1
4.7uF
16V
1206
1
6
2
5
3
4
R26
220
C23
1uF
16V
SW0
VU1
0805
C5
0.22uF
50V
0805
4
1
3
2
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
D11
BAS516
1
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
4700PF 4.42K
1%
C18
10pF
R35 +VO1
137K
1% 0805
C24
47pF
B
R38
18.2K
1%
D14
BAS516
1
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.
3
VERSIONS
-A
VIN
34V-75V
VOUT
[email protected]
[email protected]
-B
18V-36V
-C
36V-72V
[email protected]
-D
36V-72V
[email protected]
CONTRACT NO.
APPROVALS
DRAWN:
TECHNOLOGY
KIM T.
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
10K 0805
D9
PDZ7.5B
2
1
4
1
R47
10K
1
2
3
4
5
6
7
8
R10
1K
L3
OPT
Q13
IRF6217
2
OUT R46
OPT
1
Q9
BCX55
R17
560
C25
OPT
1206
-VOUT
4 VCC
U6
PS2801-1
D
TP5
CG
R44
10.7K
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
SYNC
6.3V
APXE
VAUX
R30
1.2K
R43
OPT
D8
OPT
C6
OPT
0805
*
CSYS
VAUX
4
2
VU1
C11
0.01uF
C13
0.47uF 10V
0805
+VOUT
+ 470uF
TP6
D6
B0540W
2
1
C4
0 OHM RES
5
6
7
8
+5V
R8
2.2
TP4
CO1
CO2 OPT
CO3 OPT
100uF
6.3V
TDK
1812
Q3
HAT2165
T2
PE-68386
PULSE ENG.
B
D12
BAS516
2
1
Q2
HAT2165
+VO1
5
4
3
CG
D7
OPT
VFB
OPTIONAL CIRCUIT
3
2
0805
R33
158K
+VB R28
196K
FG
RCS1
0.008
2010
OUT
2 D10
BAT760
1
9
10
11
R9
47
OPT
L1
1.5uH
2
1
C2
1500pF
200V
1206
1
R42
U1
LT1952EGN-1
D1
BAS516
SW1
4
5
Q1
HAT2244
R7
0
2
2
3
R14
33K
R15
115K
VR2 R32
332K
2 GND
C21
R13
22K
Q12
BC856T
1
+VIN
SW0
U2
LTC4440ES6-5
C
6
R5
10
VFB
1
TP3
SUMIDA
CDEP147NP-1R5MC-95
3
D5
PDZ9.1B
TP2
VU1
D2
BAS516
2
2
-VIN
1
2
D
VR2
CIN3
OPT
1812
T1
PA0872.004
7
8
1
1
CIN1
CIN2
6.8uF
50V
1812
3
L2
1.5mH
DO1607B-155ML-C
2
R11
33K
Q10
PZTA42 VU1
1
*
4
2
1 1
+VIN
+VB
R1
2.2
2
1
+VIN
TP1
3
2
5
DATE:
2
DWG NO.
DC968A2-B
REV
LT1952EGN-1, LTC3900CS8, LT4430ES6
Tuesday, February 20, 2007
SHEET 1
1
A2-B
OF 1
A
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