DC952A - Schematic

5
4
3
R1
OPT
3
1
2
5
6
2
4
2
4
Q7
OPT
Q8
OPT
3
3
3
1
TP9
4
Q6
OPT
1
1
VCC
C9
C4
0.1uF
OPT
R5 OPT
2
R17 OPT
RC2
0.01uF
INTVCC
10K
CC4
OPT
SS/TRACK
CSS
1000pF
INTVCC
28
NC
TG
27
C6
3
NC
SW
26
0.1uF
4
VON
SENSE+
25
5
VRNG
NC
24
6
PGOOD
NC
23
7
MODE_SYNC
NC
22
ON
1
OFF
TP8
GND
C8
ITH
SENSEBGRTN
20
BG
19
R24
R20
R21
DRVCC
18
0
OPT
0
SS_TRACK
12
SGND
13
SDB
14
UVIN
INTVCC
17
EXTVCC
16
NDRV
15
Q1
Si7852DP
R19 OPT INTVCC
33pF
CC2
RC
220pF
90.9K 1%
RUV1
VIN
R12
0
R18 OPT
33.2K
1%
14K
OPT
D1
COUT3
10uF
B1100 16V
C
TP5
VOUT
VOUT
12V 6A
COUT1
270uF +
16V
COUT4
10uF
16V
+
COUT2
270uF
16V
OPT
+
COUT5
+ COUT6
OPT
C7
R13
R22
0.012
1%
0
TP6
0.1uF
R23
0.012
1%
GND
B
R10
R9
OPT
TP7
0
Q4
OPT
R8
0
C1
TG
4
BG
4
1uF
C3
OPT
1
2
3
RF
BGRTN
1%
Q5
OPT
1
2
3
RFB2
1K
1%
13V - 80V
VIN
OPT
RFB1
OPT
OPT
VOUT
OPT
CIN6
1uF
R11 OPT
VOUT
CF
CIN5
C5
INTVCC
RUV2
100V
L1 7.7uH
0.1uF
470K
B
VIN
CIN4
1uF
100V
GND
C2
CC1
CIN3
1uF
100V
4
BG
2
JP2
CIN2
+ 68uF
TP2
OPT
VFB
11
CIN1
+ 68uF
100V
9
PLL_LPF
TP1
VIN
4
21
10
VIN
5
6
7
8
TG
Q2
Si7852DP
8
3
SHUTDOWN
2
R15 0
BOOST
1
2
3
CC3
ION
1
2
3
JP1
1
5
6
7
8
INTVCC R4 0
3
TP4
VIN
5
6
7
8
MODE/SYNC
1
TP10
VIN
5
6
7
8
4
MODE/SYNC
APPROVED
U1 LTC3810EG
TP3
PULSE SKIP
SYNC
FORCE
CONTINUOUS
10/18/07
D2
BAS19W
INTVCC
C
Q3
ZXMN10A07F
1
2
R2
OPT
DATE
PROD
D
R16
24.9K
1%
TP11
R6
100K
PGOOD
R14
OPT
CON
100pF
0
DESCRIPTION
4
VIN
VIN
3
RON
274K
1%
REV
VIN
VIN
R3
VLOGIC
1
ECO
INTVCC
D
2
REVISION HISTORY
This circuit is proprietary to Linear Technology and supplied
for use with Linear Technology parts.
Customer Notice: Linear Technology has made a best effort to
design a circuit that meets customer-supplied specifications;
however, it remains the customers 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
Applications Engineering for assistance.
CONTRACT NO.
A
APPROVALS
DRAWN MI
DATE
08/22/05
CHECKED
TECHNOLOGY
TITLE
STEP-DOWN CONVERTER
ENGINEER
SIZE
DESIGNER
CAGE CODE
Tuesday, November 06, 2007 SCALE: NONE
4
3
A
SCH, LTC3810EG, HIGH EFFICIENCY HIGH VOLTAGE
APPROVED
5
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
2
DWG NO
REV
A
DC952A
FILENAME: 952A-4.DSN
SHEET
1
1
OF
1
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