DC164A - Schematic

5
4
3
2
1
REVISION HISTORY
ECO
REV
__
DESCRIPTION
2
APPROVED
DATE
GORAN P.
08-12-10
PRODUCTION
VOUT
E1
INTVCC
COUT1
BSC027N04
4
E9
8
7
6
5
Q1
PGOOD
25V
1812
COUT3
4
+
COUT5
150uF
35V
Q2
GND
COUT6
1
2
3
1
2
3
R13
J2
OPT
C1
VOUT-
OPT
E2
VIN
SNS-
C
C5
C17
1000pF OPT
R9
10
1
2
3
CS-
4
INTVCC
R14
10K
6
2
PULSE SKIP
3
BURST MODE
4
C19
1000pF
8
R17
10K
JP1
7
INTVCC
CLKIN
SENSE1+
SW
SENSE1-
TG
ITH
BOOST
SS
VBIAS
MODE/PLLIN
INTVCC
FREQ
BG
RUN
R15
TBD
R18
0
PGOOD
GND
C4
0.1uF
16
INTVCC
R7
OPT
BAS140W
15
VOUT
RUN
R19
38.3K
1
ON
VBIAS
C
13
3
11
10
INTVCC
9
Q4
VBIAS
BSC027N04
C7
0.1uF
4
C8
4.7uF
0805
4
VIN
VIN
0
E3
Q3
CIN2
OPT
CIN3
CIN5
R16
VIN+
VIN
22uF
25V
1812
+
J3
CIN1
150uF
35V
35HVH150M
4 - 24V
#
GND
B
J4
VBIAS
E4
2
VIN-
3
VIN
R20
12.1K
JP2
CS-
12
1
VOUT
2 RUN
OFF
0.005
CS+
CIN4
B
RSNS1
RSNS2
0.005
R11
OPT
VIN
E7
R8
OPT
14
E6
RUN
D1
GND
1
FCC
5
SS
VFB
17
MODE
SNS-
LTC3786EMSE
8
7
6
5
R3
OPT
U1
CS+
C15
0.1uF
1
2
3
E5
L1
3.3uH
PA1494.362NL
R12 12.1K
10
0
SS
R10 232K
**
R5
8
7
6
5
R2
R4
16.9K
1
2
3
C3
15nF
D
35HVH150M
COUT4
0
R6
0
22uF
COUT2
VOUT
C2
100pF
VOUT
24V / 3 - 5A
J1
R1
100K
8
7
6
5
D
VOUT+
JP3
GND
E8
NOTE: UNLESS OTHERWISE SPECIFIED
A
*
- FOR VIN < VOUT ONLY, VOUT FOLLOWS VIN WHEN VIN >/= VOUT
#
- SURGE VOLTAGE UP TO 36V
* * A - CONNECT TO RSNS1
KELVIN SENSE FOR SNS+/-
1. ALL RESISTORS ARE IN OHMS, 0603.
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.
5
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
4
3
TITLE: SCHEMATIC
HIGH CURRENT SINGLE OUTPUT
SYNCHRONOUS STEP-UP SUPPLY
SIZE
2. ALL CAPACITORS ARE IN MICROFARADS, 0603.
3. INSTALL SHUNTS AS SHOWN.
TECHNOLOGY
A.K
GORAN P.
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
N/A
SCALE = NONE
2
DATE:
IC NO.
LTC3786EMSE
REV.
2
DEMO CIRCUIT 1641A
Wednesday, August 25, 2010
SHEET 1
1
OF 1
A
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