DC1847A - Schematic

A
B
C
D
E
REVISION HISTORY
ECO
REV
__
DESCRIPTION
1
APPROVED
PRODUCTION
TOM G.
DATE
3-29-13
4
4
R11
0 Ohm
0805
E2
JP1
RUN1
ON
OFF
RF
100
1
2
3
BURST MODE
PULSE-SKIP
RPG1
100k
GND
E11
5
PVIN2
1
SVIN
4
SGND
SGND
SW2
R3
210k
1%
1
3
5
7
E5
6
E8
Vishay
IHLP1616BZER4R7M11
COUT2
10uF
6.3V
2
4
6
8
CFFW2
22pF
R2
887k
1%
R8
121k
1%
R9
OPT.
R10
OPT.
E12
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
B
3
C
TECHNOLOGY
HZ
TOM G.
GND
GND
2
2
4
6
8
2.5V
3.3V
5V
USER SELECT
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
DUAL 600mA MONOLITHIC, SYNCHRONOUS STEP-DOWN REGULATOR
SIZE
IC NO.
N/A
SCALE = NONE
VOUT2
600mA
JP5
VFB2
1
3
5
7
APPROVALS
LINEAR
TOM G.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.
[*] CIN3 AND CIN4 ARE INSERTED ON DC1596A TO DAMPEN THE (POSSIBLE)
RINGING VOLTAGE DUETO THE USE OF LONG INPUT LEADS. ON A NORMAL,
TYPICAL PCB, WITH SHORT TRACES, CIN3 AND CIN4 ARE NOT NEEDED.
PGOOD2
COUT4
0.1uF
16V
R4
280k
1%
R7
105k
1%
1
COUT6
47uF
6.3V
OPT.
E10
U1
LTC3607EMSE
R6
196k
1%
CUSTOMER NOTICE
A
9
R5
140k
1%
JP4
VFB1
2
1.2V
1.5V
1.8V
USER SELECT
PVIN1
SW1
8
10
R1
210k
1%
Vishay
IHLP1616BZER2R2M11
*
PVIN2
4.5V - 15V
+ CIN4
22uF
35V
RPG2
100k
GND
COUT1
10uF
6.3V
+ CIN6
47uF
20V
OPT.
OFF
PGOOD1
13
GND
E9
CFFW1
22pF
CIN2
10uF
16V
L2
4.7uH
3
COUT5
47uF
6.3V
OPT.
ON
L1
2.2uH
E7
COUT3
0.1uF
16V
PGOOD2
17
VOUT1
600mA
RUN1
16
E4
CIN2BYP
0.1uF
16V
5.1M
RSD2
MODE/SYNC
PGND1
PGOOD1
15
2
3
JP3
MODE/SYNC
1
2
3
4
5
6
VFB1
SYNC
EXT SYNC
1
2
3
CF
0.1uF
14
RSD1
5.1M
E6
JP2
RUN2
11
CIN1BYP
0.1uF
16V
RUN2
CIN1
10uF
16V
VFB2
E3
+ CIN5
47uF
20V
OPT.
12
*
+ CIN3
22uF
35V
PGND2
GND
E1
7
PVIN1
4.5V - 15V
REV.
LTC3607EMSE
DEMO CIRCUIT 1847A
1
Thursday, August 08, 2013
DATE:
D
SHEET 1
E
OF 1
1
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