DC1234B - Schematic

5
4
E3
3
3 GND
4 GND
GND 26
GND 25
VEE1 24
5 SYNC
6 DELAY
2200pF
sense1-
sense2-
C12
R28
30.9K
R30
10
R32
51.1K
2200pF
R29
60.4K
1%
C13
22pF
7 DCL
8 SENSE1+
C7
1uF
BOOST 6 25V
TG 5
TS 4
R17
0
11 RSET
12 SENSE2-
CS1
.1uF
CC1
220pF
VC 15
RC1
15K
1%
CC2
6800pF
5
Q10
HAT2266H
R31
53.6K
1%
R26
0
GND
B
R23
OPT
C10
OPT
RA2
0.008
RB2
0.008
sense2-
CFF1
OPT
CUSTOMER NOTICE
CONTRACT NO.
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.
APPROVALS
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
4
R21
OPT
4
R27
0
RFB1
475K
1%
D7
DFLS160
4
4
VOUT
GND
COUT5
10uF
50V
E9
R25
0
E11
5
R18
OPT
Q9
HAT2266H
GND 18
RUN 17
FB 16
4
R20
OPT
U3
LTC4440ES6
C9
4.7uF
25V
GBIAS2 21
BGATE2 20
VEE2 19
9 SENSE110 SLOPE
13 SENSE2+
14 SS
3 INP
R19 1K
C
E8
Q8
HAT2266H
OPT
Q7
HAT2266H
BGATE1 23
GBIAS1 22
29 GND
E10
1 VCC
2 GND
D6
PD3S160
2
5
SYNC
1
GBIAS
GBIAS 28
VCC 27
E7
R16
2
SGate2
U1
LT3782AEFE
COUT4 E6
COUT3 + 680uF
10uF
35V
50V
SANYO
35CE680AXA
GBIAS
VCC
VOUT
[email protected]
1
2
3
sense1-
C6
1uF
25V
C8
4.7uF
25V
COUT2
10uF
50V
RA1
0.008
5
2
C5
0.01uF
VOUT
E5
RB1
0.008
5
R15
316K
1%
1 SGATE2
2 SGATE1
R22
10
GND
R12
0
1
2
3
RUN
1
C3
OPT
4
1
2
3
ON
SGate1
A
5
4
R11
0
R8
OPT
Q4
HAT2266H
1
2
3
R14
1K
D5
PDZ12B
C11
D
D2
DFLS160
R6
OPT
1
C4
1000pF
MMBTA42
SGate2
R24
1Meg
4
Q3
HAT2266H
JP2
SYNC
R5
OPT
U2
LTC4440ES6
L2
10uH
PULSE, PB2020.103
RSS1
825K
1%
Q5
OFF
B
TS 4
R3
OPT
4
5
R13
2
C
1K
1
2
5.11K
3
1
Q6
BCX55
2
3
JP1
R2
0
1
2
3
2
R10
VOUT
OPT
1
1K
BOOST 6
TG 5
Q1
HAT2266H
L1
10uH
PULSE, PB2020.103
3
D4
VCC Bias
1
LR
D3
PDZ20B
2
R9
0
3 INP
C2
1uF
25V
1
R7
0
VCC
VIN
R4
VIN
E4
2
GND
1 VCC
2 GND
SGate1
2
COUT1
10uF
50V
Q2
HAT2266H
OPT
1
2
3
D
1
5
CIN2
10uF
50V
D1
PD3S160
R1
2
1
2
3
CIN1
10uF
50V
C1
1uF
25V
CIN5
+ 680uF
35V
SANYO
35CE680AXA
CIN4
10uF
50V
CIN3
10uF
50V
5
E2
1
GBIAS
VIN
10V-15V
2
1
2
3
E1
VIN
3
3
2
TECHNOLOGY
DRAWN: Antonina K
CHECKED:
TITLE:
APPROVED:
ENGINEER: VICTOR K.
DESIGNER:
SIZE
A
DATE:
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
LT3782AEFE
High Power, Dual Phase Synchronous Boost Converter
DWG NO.
REV
DC1234B
B
Wednesday, February 11, 2009
1
SHEET
1 OF 1
A
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