Linear Technology DC1848A, Руководство пользователя

Страница: 5 / 6

5
dc1848af
DEMO MANUAL DC1848A
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
5 5
4 4
3 3
2 2
1 1
D
D
C
C
B
B
A
A
ALL CAPACITORS ARE 0402.
NOTES: UNLESS OTHERWISE SPECIFIED
1. ALL RESISTORS ARE 0402.
SUNCON 50CE100BS
VIN
VOUT
VIN
D1 PDS540 D1 PDS540
2 1
3
E7
SYNC
E7
SYNC
C6 10nF C6 10nF
E4
GND
E4
GND
E5
EN
E5
EN
VEMIVEMI
C3 10uF 50V 1210 C3 10uF 50V 1210
C5 10pF C5 10pF
C7
470pF C7 470pF
R7
OPT 0603
R7
OPT 0603
R8
OPT 0603
R8
OPT 0603
C9
10uF
50V 1210 C9
10uF
50V 1210
E6
PG
E6
PG
L1
3.3uH
IHLP2525CZER3R3M01
L1
3.3uH
IHLP2525CZER3R3M01
L2
1.0uH
XAL4020-102ME
L2
1.0uH
XAL4020-102ME
JP1
ON
OFF
JP1
ON
OFF
1 3 2
R2 576k 1% R2 576k 1%
U1
LT3976EMSE
U1
LT3976EMSE
NC
9
OUT
3
FB
1
SS
2
EN
13
VIN
12
BOOST
4
SW
5
PG
15
SYNC
16
GND
17
VIN
11
VIN
10
SW
6
SW
7
RT
14
NC
8
L3
3.3uH
XAL5030-332ME
L3
3.3uH
XAL5030-332ME
C11 1uF
0603 16V
C11 1uF
0603 16V
R5 130K 1% (400kHz) R5 130K 1% (400kHz)
C1 47uF 10V 1210 C1 47uF 10V 1210
+
C4 100uF 50V
+
C4 100uF 50V
R1 1.00M 1% R1 1.00M 1%
E2
GND
E2
GND
R6 200K R6 200K
C2 0.47uF 0603 C2 0.47uF 0603
E1
VOUT
3.3V / 5A
E1
VOUT
3.3V / 5A
JP2
SYNC RT FREQ
JP2
SYNC RT FREQ
1 3 2
R3 2 R3 2
E3
VIN
4.3V - 40V
E3
VIN
4.3V - 40V
+
C10
33uF
50V
50HVP33
+
C10
33uF
50V
50HVP33
C8 47uF 10V 1210 C8 47uF 10V 1210