DC2173A - Schematic

5
4
3
2
1
REVISION HISTORY
ECO
INTVCC
VIN
R26
VBIAS
100K
E5
INTVCC
R32
OPT
OPT
R42
R1 75mV FLOAT
OPT
100mV
D
R31
EXTVCC
05-02-2014
VAUX
D
SENSE1+
5
C19
R2
5
OPT
R12
OPT
Q1
OPT
4
Q3
BSC028N06LS3
1
2
3
0
R11
D3
OPT
VBIAS
5
E8
RUN
11
SS
12
C15
0.1uF
E9
5
EXTVCC
RUN
INTVCC
SS
INTVCC
15
VIN
PGND
CIN2
4.7uF
100V
3225
CIN3
4.7uF
100V
3225
CIN4
4.7uF
100V
3225
+
63HVH33M
VIN
6 - 60V
*
J2
GND
E2
1
5
VINC
4
C17
24
Q4
BSC028N06LS3
0.1uF
E3
VOUT+
VOUT
J3
23
22
VOUT
INTVCC
C8
4.7uF
0805
10
C22
2.2uF
100V
1206
C23
2.2uF
100V
1206
COUT1
4.7uF
100V
3225
COUT2
4.7uF
100V
3225
COUT3
4.7uF
100V
3225
COUT4
4.7uF
100V
3225
COUT5
4.7uF
100V
3225
+
COUT6
33uF
63V
63HVH33M
+ COUT7
48V / 1 - 3.0A
33uF
63V
63HVH33M
J4
*
GND
E4
RUN
VOUT-
R33
150K
0805
1
ON
PGND
SGND
VFB
INTVCC
PLLIN / MODE
PGND
6
8
J1
CIN1
33uF
63V
25
100K
9
SGND
OVMODE
3
17
1
4
ITH
2
0.006
2010
EXTVCC
C16
0.1uF
R35
RSNS1
SER2918H-103
0
VBIAS
21
VIN+
VIN
1
2
3
FREQ
20
E1
0.006
2010
4
1
2
3
18
2
3
14
19
TG
SW
PGOOD
BOOST
BG
16
BURST MODE
(SYNC)
7
INTVCC
Q2
BSC028N06LS3
R15
MODE
JP1
CCM
PULSE SKIP
LTC3769EUF
ILIM
13
INTVCC
SENSE1-
R5
30.1k
U1
SENSE1+
R10
OPT
D1
BAS170W
1
2
C4
0.1uF
INTVCC
RSNS2
5
1000pF
R13
0
L1
10uH
2
3
1
2
3
C5
R17
10
R14
OPT
4
OPT
RUN
DATE
VICTOR K.
SENSE1-
E7
GND
CLKIN
APPROVED
PRODUCTION
E6
EXTVCC
C
DESCRIPTION
2
0
R4
OPT
50mV
1
PGOOD
REV
-
VOUT
OVMODE
1
2
3
R34
38.3K
JP2
D2
OPT
C2
100pF
2
15K
3
C3
15nF
R6
475K
R37
OPT
0805
1
ON
0
R8
12.1K
1
VFB
5
2
3
OFF
JP4
2
D4
OPT
OVMODE
GND
8
A
R40
523K
9
7
6
10
GND
SS
GND
ISET
R39
47K
*
C21
22uF
16V
1206
C20
47nF
17
11
VPRG2
FBO
GND
JP3
220uH
R41
80.6K
VPRG1
12
B
1
RUN
R38
OPT
3
ON
SW
14
OVP
OFF
C18
0.1uF
100V
1206
VAUX
L2
VIN
AUX
R3
VOUT
INTVCC
U2
LTC3630AEMSE
VIN
R9
B
16
OFF
VOUT FOLLOWS VIN WHEN VIN > REGULATED VOUT
CUSTOMER NOTICE
NOTES:
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.
1. ALL RESISTORS ARE IN OHMS, 0603.
ALL CAPACITORS ARE IN MICROFARADS, 0603.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
4
3
2
TECHNOLOGY
LT
VICTOR K.
TITLE: SCHEMATIC
HIGH VOLTAGE, LOW IQ, SYNCHRONOUS BOOST CONVERTER
SIZE
N/A
SCALE = NONE
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.
REV.
LTC3769EUF
DEMO CIRCUIT 2173A
Friday, May 02, 2014
SHEET 1
1
2
OF 1
A
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