DC453B - Schematic

5
4
3
2
1
REVISION HISTORY
VCC
VCC
INPUT
TP11
C6
D3
ISNK
TP17
C15
3
8
NC
0-> +5V
2
A
3
C14
1uF
GND
4
CW
INCREASE
VR2
10K
VCSRC
+5V MAX
2
4
6
19
V-
SENSE+
SENSE-
VCSRC
C23
0.1uF
3
VEE
-18V MAX
E3
C
1/2W
*
Q2
G
* IRF530N
TBD
2
6
D5
BAV99
C18
TBD
1
* C13
3
2
TP3
JP4
DC GAIN
1-2
+1
AC GAIN
+2
2-3
-1, +1
-1, +1
3-4
-1, +1
-1, +1
4-5
+2
+2
R11
*
FET_V-
JP4 SETTING DIAGRAM
FET_V-
1-2
TP7
R30
100
IN
JP2
3
* R12
TBD
INV NON
TBD
* R15
OUTPUT
*
TP8
TBD
R1K_LOAD
1K
(OPT.)
RF
10K
1
10K
10K
OUTPUT
J4
GND
J6
3-4
IN
JP2
2
B
+
10uF
DUAL
SINGLE
SUPPLY
10K
4-5
INV NON
JP2
+
INV NON
10K
C2
DUAL
SUPPLY
ONLY
IN
+
J2 (OPT.)
OUTPUT
MONITOR
BNC
JP6
DUAL
SINGLE
SUPPLY
JP2
INV NON
10K
R_SENSE
* R14
2-3
IN
-
*
TP4
10K
DUAL
SINGLE
SUPPLY
+
R13
VEE_DEVICE
3
+
E2
D
VEE
DUAL
SINGLE
C22
10uF
35V
C21
0.1uF
GND
TP9
C24
1
100K
VCSRC/VCLCONT
R2
+
NFET
JP5 S C
10K
C20
10uF
35V
C11
0.1uF
S
B
R1
+
D
VCC
OUT FET D
220pF
R28
100K
VCSNK
C10
10uF
35V
C9
0.1uF
JP4 SETTINGS
1
NC
2
C5
0.1uF
11-28-12
1/2W
2
+5V
CW
INCREASE
1
C4
10uF
35V
VCSNK
1
VR1
10K
5
R8
*100
R29
+
1uF
SENSE
VCSNK
VEE_DEVICE
IN
7
1
10
11
20
VEE_DEVICE
12
R16
2K
-IN
DATE
TIM R.
+
VCC
+18V MAX
E1
* Q1
R9
3
OPA OUT
13
8
V-
D
V+
TSD
VCC
COMMON
VEE
VEE
VEE
VEE
VCC
NC
16
17
18
7
ENABLE
U1
LT1970A
4
14
ISRC
VEE
V-18V MAX
E5
VEE
FILTER
25V
R26
10K
6
S
TP5
5
C
VEE
*
OPA OUT
+IN
D4
BAT54WS
C17 10uF
JP7
OUTPUT
SUPPLIES
R10
TBD
TP2
JP4
1
2
3
4
5
3
R21
C12
TBD
V-
IRF9530N
PFET
+IN
9
OUT
B
G
15
3
R27
4.99K
R20
4.99K
SHDN
*
TBD
TP15
ISRC
TP16
2
DUAL
U2
LTC3010EMS8E-5
R3
SEP
2
D1
*
A
5
3
1
*
TP14
ISNK
SINGLE
C16
10uF
35V
TP10
TSD
JP3
APPROVED
C8
10uF
35V
GND
E6
V+
VCC
R5 R6 R7
1.5K 1.5K 1.5K
ENABLE IN
INV
R19
TP6
* R23
TBD
COM
NON
2
D2
JP2
R18
4.99K
2.5K
FET_V+
* R22
TBD
R4
10K
AC
1
DC
VCC
TSD
AMB
ISNK
AMB
ISRC
RED
3
JP1
V+
+18V MAX
E4
FET_V+
2
1
BNC
B
DESCRIPTION
PRODUCTION
V+
0.1uF
10uF
35V
INPUT_OPA
TP1
J1 (OPT.)
INPUT
+
1
1
10uF
C1
25V
R17
4.99K
REV
__
+
GND
TP12
D
C7
ECO
TP13
10K
10K
10K
TBD
CUSTOMER NOTICE
* VERSION TABLE
A
TP18 TP19 TP20 TP21 TP22
Assembly Type
R9, R10,
R11
R8
R12,R14
Q1, Q2
R_SENSE
C12, C13
R13,R15
R3, R21
R22, R23
GND
DC453B-A
NON BOOSTED
DC453B-B
BOOSTED
0 JUMPER
100
NOT
NOT
NOT
INSTALLED INSTALLED INSTALLED
NOT
INSTALLED
INSTALLED
INSTALLED
1 OHM
>=0.5W
NOT
0 JUMPER
INSTALLED
NOT
INSTALLED
0.1 OHM
>=3W
INSTALLED 0 JUMPER
NOT
INSTALLED
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.
4
3
PCB DES.
AK
APP ENG.
TIM R.
TECHNOLOGY
POWER OP AMP WITH ADJUSTABLE CURRENT LIMIT
N/A
SCALE = NONE
2
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
TITLE: SCHEMATIC
SIZE
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
APPROVALS
DATE:
IC NO.
REV.
LT1970A
DEMO CIRCUIT 453B
Wednesday, November 28, 2012
1
SHEET 1
1
OF 1
A
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