DC1831A - Schematic

5
4
3
TP1
VIN *
ECO
R6
R19
0
0
2512
+
TP2
C3
C4
OPT
1210
C1
33uF,100V
100CE33FS
C6
1uF
100V
1206
C2
C5
2.2uF
100V
1210
REV
IVINMON
E7
5
6
7
8
19
20
R5 100K
SW
C9
C11
22uF
25V
1210
+
C8
C10
68uF
16V
VREF
BG
R8
100K
GND
26
14
R11
5.62K
CTRL1
R9
OPT
SENSE+
D2
DFLS260L
4
Q3 Q4
RJK0851DPB
R14
487
C16
OPT
R10 0
17
C14
1nF
FB
FAULT
9
PWM
22
GND
VC
29
R15
30.9K
SS
GND
18
SENSE-
12
C15
10nF
CTRL2
GND
15
28
E6
GND
CTRL2
23
13
16
R13 0
11
5
6
7
8
E5
R22
1
0
CTRL1
C
E4
INTVCC
R25
100K
J5
Q5
BSC014N03LSG
LED-
B
4
1
2
3
R7
45.3K
GND
J4
2
5
R12
680K
TP4
C12
22uF
0805
SYNC
VREF
C13
2nF
D1
DFLS160
1
E3
21
INTVCC
2
VOUT
10A / 10V
J3
INTVCC
RT
TP3
1
2
3
C
0
R4
0.005
2512
5
6
7
8
R3 100K
U1
LT3763EFE
EN/UVLO
C7
0.22uF
1
4
27
L1
2.8uH
WE 7443551280
4
R16
BOOST
EN/UVLO
25
1
2
3
TG
Q1
Q2
RJK0851DPB
2
ISMON
8
IVINMON
6
3
VIN
FBIN
IVINN
10
IVINP
7
R27
100K
E8
VIN
C18
OPT
R20
OPT
R2
124K
ISMON
VREF
R21
OPT
R1
374K
B
DATE
WALKER B. 09-11-12
D
VIN
E2
APPROVED
R26 0
VIN
GND
DESCRIPTION
PRODUCTION
C20
OPT
C19
1nF
E1
2
R23 0
PWM_OUT
J2
R18
0
24
J1
D
SYNC
1
REVISION HISTORY
__
12V - 60V
GND
2
VIN
R24
100K
R17
0
2512
C17
5.1nF
FAULT
E10
PWM
E11
NOTE: UNLESS OTHERWISE SPECIFIED
1. ALL RESISTORS ARE IN OHMS, 0603.
ALL CAPACITORS ARE IN MICROFARADS, 0603, +/-10%.
A
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 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.
* - SEE QUICK START GUIDE FOR VIN RANGE.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
APPROVALS
4
3
TECHNOLOGY
A.K.
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
WALKER B. TITLE: SCHEMATIC
HIGH POWER CONSTANT CURRENT,
CONSTANT VOLTAGE SYNCHRONOUS BUCK CONTROLLER
SIZE
N/A
SCALE = NONE
DATE:
2
IC NO.
REV.
LT3763EFE
2
DEMO CIRCUIT 1831A
Tuesday, September 18, 2012
SHEET 1
1
OF 1
A
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