DC964A - Schematic

5
4
3
2
1
REVISION HISTORY
ECO
REV
DESCRIPTION
D
DATE
PROTO
3
APPROVED
07/12/06
VIN
D
3
FB1
VIN1
JP1
4.5V to 24V
C3
2.2uF
X7R
50V
L1 4.7uH
FP3-4R7
C12 0.47uF
D3
CMDSH-3
D1
B360A
C14 22pF
U1
LT3501EFE
1
R14
IND1
C
VOUT1
TP1
3.3V@
3A, VIN1<16V
2.8A, VIN1>16V
C24
10uF
6.3V
C16
100uF
6.3V
IND2
TP9
VOUT1
VOUT2
R7
100K
R8
100K
PG1
TP13
L2 3.3uH
FP3-3R3
D2
B360A
D4
CMDSH-3
D5
CMDSH-3
R9
BST1
20
SW1
SS1
19
3
IND1
VC1
18
4
VOUT1
FB1
17
5
PG1
FSET
16
6
PG2
SHDN
15
2
8.06K
B
SS1
C20
VIN1
7
VOUT2
FB2
14
8
IND2
VC2
13
9
SW2
SS2
12
10
VIN2
BST2
11
OPT
GND
C18 100pF
PG2
TP4
C15
84.5K
R15 10.0K
TP14
FB2
SYNC
TP5
C
FOR 500kHz
SHDN
TP6
C17 22pF
R13
31.6K
PG2
R22 OPT
220pF
R12
61.9K
21
R10 24.9K
TP8
PG1
SS1
VIN2
0.1uF
GND
GND
COMBINED
1
C1
33uF
35V
+
VOUT1
INDEPENDENT
2
VIN1
TP3
C19
330pF
SS2
C13
0.47uF
TP7
SS2
C21
B
0.1uF
VOUT2
1.8V@
3A, VIN2<16V
2.8A, VIN2>16V
GND
VIN2
C25
10uF
6.3V
VOUT1
C23
100uF
6.3V
R18
OPT
R17
8.06K
R19
OPT
TP10
OPTIONAL
ABSOLUTE TRACKING
VIN2
TP11
4.5V to 24V
+
GND
A
C22 470pF
VOUT2
TP2
C2
33uF
35V
C4
2.2uF
X7R
50V
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.
TP12
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
4
3
CONTRACT NO.
APPROVALS
DRAWN
A. Karpova
DATE
08/10/06
CHECKED
APPROVED
ENGINEER
Tiger Zhou
08/10/06
TECHNOLOGY
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
A
TITLE
LT3501EFE
DUAL MONOLITHIC STEP-DOWN DC/DC CONVERTER
DESIGNER
SIZE
Wednesday, September 13, 2006
SCALE:
2
CAGE CODE
FILENAME:
DWG NO
REV
DC964A
SHEET
1
1
4
OF
1
Similar pages