DC1161B - Schematic

5
4
3
2
1
REVISION HISTORY
ECO
REV
__
1
VIN
E1
SANYO
50CE22LX
R6 20k C5
D4
B340A
E10
680pF
7
SW2
SW1
SW2
FB1
FB2
VC1
VC2
TRK/SS1
TRK/SS2
VOUT3
C26
1uF
10V
0603
E14
D9
CMDSH-4E
2
1
L3
10uH
C10
47uF
10V
1206
E4
12
E5
R11 20k C11 680pF
R12
10.2k
D6
B240A
C19
47pF
2
GND
32
C9
0.22uF 33
0603
34
20
C18
OPT
E16
19
BOOST3
BIAS
SW3
TRK/SS4
SW3
DRIVE
FB3
FB4
VC3
VINSW
18
TRK/SS3
UVLO
TRK/SS3
OVLO
27
C2
0.22uF
25V
0603
28
29
E18
SD
23 C6
C15
RUN2
RUN3
C21
0.01UF
0603
C22
2.2UF,50V
1210
+
D5
B240A
47pF
21
PGOOD3
E7
C4
22uF,6.3V
1206
R9
10k
C16
OPT
C25
1uF 10V
0603
VOUT2
[email protected]
E9
GND
E11
C
TRK/SS2
17
26
24
1
25
R23
10k
C28
OPT
5
R14
49.9k
R17
18.2k
VOUT4
Q1
ZXTCM322
4
6
E13
R13
1.07k
C29
OPT
1206
C12
2.2uF
0603
C27
1uF 10V
0603
VOUT4
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E15
GND
R16
499
R15
100k
E17
B
TRK/SS4
R18
3.32k
C20
0.1uF
E19
SYNC
R19
107k
(450kHz)
VIN
C23
22UF,50V
SANYO
50CE22LX
CUSTOMER NOTICE
A
NOTES: UNLESS OTHERWISE SPECIFIED
1. ALL RESISTORS ARE IN OHMS, 0402.
ALL CAPACITORS ARE 0402.
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.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
PGOOD2
VOUT2
R20
OPT
OPTIONAL CIRCUIT
VIN
680pF R7 20k
RUN1
U1
LT3507EUHF
TAIYO YUDEN
VISHAY
FB MJ3216HS800 IHLP-4040DZ-01
L4
FB1
22UH
BEAD
L2
8.2uH
22
RT/SYNC
16
R22
100k
B
D8
CMDSH-4E
R5
31.6k
13
15
GND
14
39
C13
0.1uF
VIN
PGOOD1
1
E3
C7
0.1uF
R10
53.6k
1
VOUT3 E12
[email protected]
VOUT2
R3
100k
11
TRK/SS1
C8
0.1uF
R2
100k
10
C17 47pF
8
R1
100k
VIN3
VIN3
1
36
35
31
PGOOD3
SW1
D
2
37
38
R8
10k
BOOST1
BOOST2
9
C14
OPT
30
2
1
2
C
PGOOD2
R4
12.4k
VOUT2
D3
CMDSH-4E
OPT
3
E8
GND
C3
47uF
10V
1206
PGOOD1
C1
0.22uF
25V
0603
1
C24
1uF
10V
0603
D7
CMDSH-4E
2
1
L1
4.7uH
E6
11-30-10
2
VOUT1
VOUT1
[email protected]
DATE
EDWIN L.
2
VOUT2
VIN2
VIN1
D2
CMDSH-4E
OPT
VIN2
D1
CMDSH-4E
OPT
3
2
1
D
1
22uF,50V
GND
APPROVED
R21
OPT
0603
+ CIN4
VIN1
CIN3
2.2uF
50V
1210
2
E2
CIN2
2.2uF
50V
1210
2
CIN1
2.2uF
50V
1210
1
VIN
7V - 36V
DESCRIPTION
REBUILD WITH CHANGES
4
3
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY
KT
EDWIN L.
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
TITLE: SCHEMATIC
TRIPLE MONOLITHIC STEP-DOWN REGULATOR WITH LDO
SIZE
N/A
SCALE = NONE
2
DATE:
IC NO.
REV.
LT3507EUHF
1
DEMO CIRCUIT 1161B
Tuesday, November 30, 2010
SHEET
1
1
OF 1
A
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