DC980B - Schematic

5
4
3
R15
CLKOUT
E1
PHSMD
2
DRVCC
0
E12
D5
E2
TRCKSS1
opt.
JP1
PHSMD
1
1
0
105K 1%
20K 1%
R28
C20
0.01uF
C5
1000pF
31
R7
C6
147K 1%
30
opt.
32
10
1
2
3
C
PLLIN/FCB
5
E7
JP4
RUN1
TRCKSS2
2
10
3
ON
DCM
CCM
100pF
C15
2
1
1
R19
8.2K
13
R11
10
R13
R20
20K
12
R10 42.2K
470pF
C16
11
C14
1000pF
opt.
OFF
VIN
7
R9
3
JP3
FCB
R27
1K
6
8
9
R14
30.1K 1%
R29
CLKOUT
SENSE1+
BOOST1
SENSE1-
TG1
VOSENSE1
SW1
PLLFLTR
RUN1
FCB/PLLIN
SGND
TRCKSS2
SENSE2-
VIN
DRVCC
INTVCC
BG1
PGND
BG2
SENSE2+
SW2
ITH2
TG2
VOSENSE2
NC
BOOST2
RUN2
28
25
CB1
0.1uF
SW1
24
21
19
20
18
E6
4
D2
opt.
D1
opt.
R30
CMDSH-3
23
22
C4
1.0uF
GND
26
R17
INTVCC
0
+ C11
4.7uF
10V
C10
1.0uF
JP8
C12
0.1uF
VIN
CIN1
10uF
25V
C13
SW2
CIN2
10uF
25V
+ CIN3
33uF
35V
17
16
CB2
0.1uF
15
D3
CMDSH-3
14
NC
1.0uF
25V
D4
opt.
Q2
IRF8313PBF
VOUT2
196K 1%
L2
RSENS2
2.2uH
0.008
RUN2
3
ON OFF
R22
VOUT2
3.3V/5A
+ COUT2
220uF
4V
8.2K
2
JP5
1
GND
C
2
4
6
8
10
12
14
16
18
20
ANALOG
INTERFACE
4
R21
20K
B
E8
E9
TG2
BG2
1
3
5
7
9
11
13
15
17
19
VIN
7V to 21V
25V
10
0
C9
1.0uF
RIN1
R12
10
95.3K 1%
C17
ITH1
Q1
IRF8313PBF
TG1 BG1
27
E4
+ COUT1
220uF
6.3V
7
8
R6
PGOOD
0.007
1
R16
10K
TRCKSS1
VOUT1
5V/5A
2.2uH
E5
PHSMD
29
R5
PGOOD
1
R4 42.2K
10K
4
RSENS1
7
8
C7
1000pF
R8
opt.
VOUT1
L1
2
C3
470pF
R2
U1
LTC3828EUH
2
R1
10
3
1
550KHz
250kHz
10
C2
100pF
JP2
FSET
2
R33
INTVCC
5
6
R3
100K
3
R18
100K
10
5
6
3
D
R32
3
INTVCC
2
D
1
B
E10
C19
1.0uF
GND
E11
R34
10
R31
0
R35
10
EXT1
2
E13
VOUT2
R23
opt.
TRACEXT2
E14
JP7
VOUT1
TRACK1
1
3
EXT2
2
TRACEXT1
JP6 VOUT2
TRACK2
1
3
R24 TRCKSS2
95.3K
TRCKSS1
A
C21
0.01uF
R25
opt.
VOUT1
C22
opt.
R26
30.1K
CUSTOMER NOTICE
CONTRACT NO.
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
APPROVALS
DATE
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO DRAWN Chris Pollard
10/25/05
TITLE
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL CHECKED
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT APPROVED
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. ENGINEER Andy Gardner 10/25/05
3
Dual Output Step-Down DC/DC with Tracking
DWG NO
REV
2
DC980B
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
4
A
LTC3828EUH
SIZE CAGE CODE
DESIGNER
5
TECHNOLOGY
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
SCALE:
2
FILENAME:
SHEET
1
1
OF
2
5
4
3
D
2
1
D
Optional Circuit
VIN
VIN
5678
5678
TG1
TG2
Q3
HAT2168H
4
Q4
HAT2168H
4
SW1
C
SW2
C
123
123
5678
5678
BG1
BG2
Q5
HAT2165H
4
Q6
HAT2165H
4
123
123
B
B
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
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
A
CONTRACT NO.
APPROVALS
DRAWN
DATE
Chris Pollard
10/25/05
5
4
TITLE
CHECKED
LTC3828EUH
APPROVED
Dual Output Stepdown DC/DC with Tracking
A
ENGINEER Andy Gardner 10/25/05
SIZE CAGE CODE
DESIGNER
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
TECHNOLOGY
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
Tuesday, May 19, 2015
3
SCALE:
DWG NO
FILENAME:
2
REV
2
DC980B
SHEET
2
OF
1
2
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