DC1467A - Schematic

A
B
C
D
E
REVISION HISTORY
PGOOD
COMP
TP3
INT EXT
4
4
10
11
17
TP1
+
CIN5
47uF
10V
CIN3
CIN4
10uF
6.3V
CIN1
CIN2
22uF
6.3V
GND
RFILT1
18
24
PVIN
PVIN
PVIN
PVIN
SVIN
CFILT1
1uF
SW1
SW1
SW1
SW1
16
15
14
13
SW2
SW2
SW2
SW2
8
7
6
5
ITH
23
2
Rt / SYNC
SYNC
INT SYNC
1
2
Rt
3
4
EXT SYNC
5
6
TP8
J6
GND
TP9
2
100k
1%
COUT3
10uF
6.3V
COUT4
100uF
Opt
TP4
+ COUT5
100uF
Opt.
GND
TP5
CFF1
22pF
R1
165k
1%
R2
3
JP1
1.2V
R3
1
2
DDR
3
4
MIN
5
6
ADJ
7
8 MAX
JP2
1.8V
82.5k 1%
JP3
2.5V
52.3k 1%
R5
JP4
3.3V
36.5k 1%
R6
RM3
JP5
301k
USER
SELECT
OPT.
2
1%
J4
2
RM1
866k
COUT2
47uF
6.3V
VOUT
4A
165k 1%
RT1
165k
1%
SLEW RATE
RSRR1
10-30-09
22
R4
GND
TP6
DATE
TOM G.
RITH1
12.7k
5%
SGND
J3
CSS1
0.01uF
VFB
PGND
6
3
5
APPROVED
TRACK/SS
25
EXT SS
24
NC
NC
4
12
9
2
3
MODE
1
21
RTR1
100k
RTR2
OPT
INT SS
TRACK
COUT1
47uF
6.3V
CITH1
220pF
TRACK / SS
DDR
TP7
3
RSS1
4.7M
DESCRIPTION
PRODUCTION
4
VISHAY
IHLP2525CZERR47M01
C1
10pF
1
TRACK
RSD1
4.7M
1
L1
0.47uH
RUN
2
1
J2
19
RT/SYNC
RUN
ON
OFF
REV
1
CC1
opt.
3
TP2
1
J5
LTC3614EUDD
2
U1
PGOOD
VIN
2.25V-5.5V
20
3
RPG1
100k
ECO
1
RM2
1.13M
(FORCED CONTINUOUS)
FC
(PULSE-SKIP MODE) PSM
(BURST MODE
EXTERNAL CLAMP) BMEC
J7
J1
MODE
1
2
3
4
5
6
7
8
3
SET EXT
VBMCV
(VOUT BURST MODE
CLAMP VOLTAGE)
RM4
100k
1%
(BURST MODE) BM
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
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
BMECV
1
TP10
(BURST MODE
EXTERNAL CLAMP
VOLTAGE)
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
A
B
C
CONTRACT NO.
APPROVALS
TECHNOLOGY
PCB DES. ANTONINA K.
ENG. TOM G.
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
TITLE: SCHEMATIC
4A MONOLITHIC SYNCHRONOUS STEP-DOWN REGULATOR
SIZE
A
IC NO.
REV
LTC3614EUDD
2
DEMO CIRCUIT 1467A
DATE:
D
Friday, April 09, 2010
SHEET
E
1 OF 1
1
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