DC1602A - Schematic

5
4
3
2
1
REVISION HISTORY
ECO
REV
__
2
2-1
DESCRIPTION
APPROVED
DATE
WALKER B.
02-02-10
WALKER B.
1-6-16
PRODUCTION
REBUILD CHANGED Q1,Q2,Q3
VIN
E1
+
D
C6
1uF
50V
0805
E2
VIN
VIN
Q1
Q2
U1
R2
124K
14
R5
100K
C
15
RT
HG
CBOOT
19
R16
0
C7
0.22uF
VCC_INT
5
VREF
SW
C13
2nF
R7
45.3K
1
8
CTRL1
LG
C9
C11
47uF
1210
R17
OPT
1206
20A @ 6V
C8
C10
150uF
C18
OPT
C
GND
E5
18
GND
Q3
BSC011N03LSI
Q4
OPT
20
4
E10
D2
DFLS240L
1
2
3
E6
VOUT *
E4
C12
22uF
0805
R8
100K
CTRL1
R4
0.0025
2512
D1
DFLS140
SYNC
SYNC
E8
L1
1.3uH
WE 7443551130
4
2
R3
100K
EN/UVLO
1
E3
BSC080N03LS G
17
5
6
7
8
EN/UVLO
4
2
LT3741EFE
R1
374K
5
6
7
8
E9
1
2
3
GND
1
GND
C4
C5
4.7uF
1210
C2
C3
4.7uF
1210
C1
100uF,50V
50CE100LX
3
6V - 36V
VIN
VIN *
D
R9
OPT
E7
9
R12
680K
C15
10nF
13
SS
SENSEN
VC
FB
R15
66.5K
GND
16
7 GND
2 GND
GND
B
SENSEP
11
CTRL2
12
R11
40.2K
R10 10
C14
33nF
R13 10
B
10
C16
OPT
R14
10k
21
6
CTRL2
C17
5nF
NOTE: UNLESS OTHERWISE SPECIFIED
A
*
- SEE QUICK START GUIDE
1. ALL RESISTORS ARE IN OHMS, 0603.
ALL CAPACITORS ARE IN MICROFARADS, 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
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
APP ENG.
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
TECHNOLOGY
A.K.
WALKER B.
TITLE: SCHEMATIC
HIGH POWER CONSTANT CURRENT,
CONSTANT VOLTAGE SYNCHRONOUS BUCK CONTROLLER
SIZE
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
4
3
N/A
SCALE = NONE
2
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
DATE:
IC NO.
LT3741EFE
REV.
2-1
DEMO CIRCUIT 1602A
Thursday, January 07, 2016
SHEET 1
1
OF 1
A
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