DC1707A - Schematic

5
4
3
2
1
REVISION HISTORY
ECO
SVIN
R1
2
APPROVED
PRODUCTION
DATE
FRAN H.
4-12-11
18
C4
1uF
SVIN
17
PVIN
E2
12
R2
100k
PVIN
C13
47uF
11
C12
47uF
PVIN
C3
47uF
PVIN
C2
47uF
10
C1
47uF
7343
PVIN
+
D
GND
24
DESCRIPTION
E1
4
VIN
2.25V - 5.5V
REV
D
U1
GND
21
E3
PGOOD
LTC3617EUDD VTTR 3
E10
4.7M
RUN
JP1
1
SVIN
C
19
C5
100nF
RUN
SW
RUN
3
1
SW
RT
SW
SD
INT
SW
JP2
ITH
SW
2
23
EXT
3
R5 20k
C10
470pF
24
SW
ITH
SW
VDDQIN
VFB
6
C
7
8
L1
13
IHLP2525 OR IHLP2020
E6
220nH
14
R4
0
15
16
20
(OPT)
C8
100uF
6.3V
1210
SYNC
NOTE: UNLESS OTHERWISE SPECIFIED
2
25
E9
2. INSTALL SHUNTS AS SHOWN.
CUSTOMER NOTICE
APPROVALS
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
PCB DES.
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APP ENG.
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
TECHNOLOGY
HZ
FRAN H.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
3
A
MONOLITHIC +/-6A STEP-DOWN REGULATOR FOR DDR MEMORY
IC NO.
DATE:
REV.
LTC3617EUDD
N/A
SCALE = NONE
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
TITLE: SCHEMATIC
SIZE
4
GND
B
1. ALL RESISTORS ARE IN 0402.
ALL CAPACITORS ARE IN 0402.
5
C9
(OPT)
7343
E7
E8
A
+
VTT
VDDQIN/2
+/-6A
22
1
SYNC
C7
100uF
6.3V
1210
R6
(OPT)
PGND
2
EXT. REF
VDDQIN
C6
(OPT)
C11
3
JP3
REF
VIN
B
SW
GND
E5
5
SGND
1
R3
365k
VTTR
E4
R7
2
PGOOD
2
DEMO CIRCUIT 1707A
Tuesday, July 05, 2011
2
SHEET 1
1
OF 1
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