DC1025A - Schematic

5
4
3
U1
LTC3560ES6
GND
4
*
E2
+CIN1
CIN
10UF
6.3V
0805
22UF
10V
3528
6
1
SYNC/MODE
RUN
JP2
MODE
C
PULSE-SKIP
BURST
JP1
VOUT ENABLE
ON
OFF
SYNC
B
E6
RBM
1.0M
COUT
10UF
6.3V
0805
COUT1
0.1UF
0805
JP3
RFB2
806K
RFB1
806K
1.2V
1%
1%
JP4
RFB3
536K
1.5V
1%
JP5
RFB4
402K
1.8V
1%
JP6
RFB5
OPT
E5
GND
CFFW
10PF
C
SYNC
CIN1 IS AN OPTIONAL CAPACITOR. IT IS INSERTED
ON THE DC1025A TO DAMPEN THE (POSSIBLE)
RINGING VOLTAGE DUE TO THE LONG INPUT LEADS.
ON A NORMAL, TYPICAL PCB, WITH SHORT TRACES,
THE CAPACITOR IS NOT NEEDED.
5
TDK
VLF3010AT-1R5N1R2
E3 VOUT
800mA
MAX.
E4
GND
RSD
1.0M
1. ALL RESISTORS ARE IN OHMS, 0402.
ALL CAPACITORS ARE 0402.
2. INSTALL SHUNT ON JP1, JP2, & JP5 PINS 1 AND 2.
*
VOUT
USER SELECT
B
NOTES: UNLESS OTHERWISE SPECIFIED
A
D
FB 5
E7
1
L1
1.5UH
SW 3
VIN
2
GND
VIN
GND
D
VIN E1
2.5V - 5.5V
2
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
CIRUIT 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.
4
3
APPROVALS
DRAWN:
CHECKED:
APPROVED:
ENGINEER: TOM G.
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
800mA MONOLITHIC SYNCHRONOUS BUCK REGULATOR
SIZE
DWG NO.
A
DC1025A-1 * LTC3560ES6
Friday, December 22, 2006
DATE:
2
SHEET
1
REV
A-1
1 OF 1
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