DC1248A - Schematic

5
E1
VIN
VIN
6.5V - 36V
60V TRANSIENT
C1
2.2uF
50V
1206
TOKO
D63CB-A916CY-100M
L1
10uH
GND
E7
2
BOOST1
BOOST2
6
SW2
5
1
DA1
DA2
7
FB1
FB2
10
R2
10K
BD 12
SW1
11
R7
100K
U1
LT3509EDE
3
14
C8
OPT
E5
C4
22uF
10V
1206
SYNC
D1
DFLS140
1
2
R1
52.3K
VOUT1
C2
0.1uF,16V
SYNC
RUN/SS2
RT
RUN/SS1
R5
60.4K
700KHz
1
D
VIN 4
E2
VOUT1 E3
[email protected]
2
C3
0.1uF,16V
TOKO
D53LC-A915AY-6R8M
L2
6.8uH
D2
DFLS140
2
1
R6
0
0603
R3
31.6K
8
9
VOUT2
C9
OPT
13
GND
GND
C
3
R4
10K
15
D
4
E4
E6
VOUT2
[email protected]
C
GND
C5
22uF
10V
1206
SYNC
RUN/SS2
E8
RUN/SS1
E9
RUN/SS2
RUN/SS1
C7
1000pF
C6
1000pF
B
B
NOTE: UNLESS OTHERWISE SPECIFIED
A
1. ALL RESISTORS ARE IN OHMS, 0402.
ALL CAPACITORS ARE IN MICROFARADS, 0402.
CUSTOMER NOTICE
CONTRACT NO.
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.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
4
3
APPROVALS
DRAWN:
CHECKED:
APPROVED:
ENGINEER: MOLLY Z.
DESIGNER:
TECHNOLOGY
KIM T.
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
TITLE: SCHEMATIC
A
36V, 700mA DUAL MONOLITHIC BUCK REGULATOR
SIZE
A
DATE:
DWG NO.
DC1248A-1 * LT3509EDE
Wednesday, November 19, 2008
2
SHEET
1
REV
A-1
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