5
dc1987af
DEMO MANUAL DC1987A
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
schematic Diagram
A
A
B
B
C
C
D
D
E
E
4
4
3
3
2
2
1
1
FOR INPUT VOLTAGE DAMPING PURPOSE ONLY.
0805
1206
OPT
5V
*
1%
1%
1%
1. ALL RESISTORS ARE 0603. ALL CAPACITORS ARE 0603.
NOTE: UNLESS OTHERWISE SPECIFIED
*
**
SEE QUICK START GUIDE FOR OUTPUT CURRENT RANGE.
**
4.5V - 29V
VIN
VIN
R6 OPT
R6 OPT
R3 90.9k
R3 90.9k
C6 0.1uF
25V
C6 0.1uF
25V
U1
LTM8057EY
U1
LTM8057EY
RUN
F3
GND
E4
BIAS
H5
VOUT
A6
SS
H6
VIN
G1
GND
F7
VOUT-
A2
VOUT-
A3
VIN
H1
GND
E5
GND
E6
GND
E7
GND
F4
GND
F5
GND
F6
GND
G4
GND
G5
GND
E3
VOUT-
A4
VOUT-
A5
VOUT-
B3
VOUT-
B4
VOUT-
B5
VOUT
A7
VOUT
B6
VOUT
B7
VIN
G2
VIN
H2
VOUT-
B2
VOUT-
B1
VOUT-
A1
ADJ
G7
GND
G6
GND
H4
GND
E2
GND
E1
GND
H7
C7 470pF
OPT
GA342QR7GD471KW01L
1808
C7 470pF
OPT
GA342QR7GD471KW01L
1808
E4
VOUT-
E4
VOUT-
C8 OPT
1210
C8 OPT
1210
E5
RUN
E5
RUN
R5 6.98k
R5 6.98k
E8
BIAS
E8
BIAS
L1 10uH
CDRH4D22/HP
L1 10uH
CDRH4D22/HP
R1 200
1210
R1 200
1210
C4 4.7uF
50V
C4 4.7uF
50V
+
10uF
35V
CIN1
+
10uF
35V
CIN1
C1 10uF
1210
50V
C1 10uF
1210
50V
R2 200k
R2 200k
C5 1uF
C5 1uF
E3
VOUT
E3
VOUT
C2 22uF
16V
C2 22uF
16V
E2
GND
E2
GND
E1
VIN
E1
VIN
C3 OPT
C3 OPT
