DC1829A - Schematic

5
4
3
2
1
REVISION HISTORY
E8
R27
INTVCC
R9 0
2
E4
ECO
REV
DESCRIPTION
DATE
APPROVED
2
PROTO
07/27/11
JIAN L.
INTVCC
MODE/PLLIN
P.S. BURST CCM
1
4
JP1
100k 1%
3
PGOOD
MODE/PLLIN
RUN
E1
ON
1
JP2
RUN
OFF
3
VIN
D
R1
OPT
R10
100k
2
D
C23
OPT
EXTVCC
R2
OPT
E5
VOUT
GND
E12
CLKOUT
INTVCC
15
R36 0
R5
OPT
C27
220nF
R3
220nF
R4
OPT
OPT
4
5
Q1
BSC050NE2LS
CIN4
10uF
25V
1210
Q2
OPT
4
CIN1
180uF
16V
J2
4.5V ~ 14V
GND
E6
VOUT
L1 0.33uH
C25
0.1uF
10V
J3
SW
12
INTVCC
Q3
BSC010NE2LS
4
C
VOUT
744301033
COUT6 COUT3
100uF 100uF
6.3V
6.3V
1210
1210
DCR=0.32mOHM
5
13
+
GND
CMDSH-3
14
CIN3
10uF
25V
1210
CIN2
180uF
16V
D2
1
2
3
16
Q4
OPT
4
+
COUT1
330uF
2.5V
7343
+
COUT2 1.5V / 30A
330uF
2.5V
7343
J4
GND
ILIM
C22
C31
4.7uF
10V
0805
17
R42
3.01k
1%
1
2
3
CLKOUT
EXTVCC
E11
INTVCC
18
1
2
3
EXTVCC
E10
C21
1uF
BG
+
11
CLKOUT
SW
VIN
5
19
ITEMP
20
PGOOD
21
22
FREQ
MODE/PLLIN
23
SNSD+
25
C29
OPT
TG
DIFFP
OPT
R38
20k
1%
BOOST
ILIM
VOUT
VIN
DIFFN
10
6
EXTVCC
DIFFOUT
9
5
LTC3866EUF
INTVCC
SNSA+
4
R41
OPT
VFB
8
C
R39
30.1k
1%
C32
3
7
R40
10k
1%
2
R34 0
C28
220pF
ITH
SNS-
1
RUN
24
TK/SS
R35
OPT
SGND
C24
0.1uF
10V
VIN
VIN
R37 2.2
1
2
3
U1
TRK/SS
C26
1.5nF
J1
C19
1uF
5
R32 0
PGND
E2
VIN
VIN
ITEMP
R30
931
1%
R28
1k
1%
R43
R44
4.64k 0
1%
C33
OPT
R31
10
R45
10
CLKOUT
R6
OPT
B
E14
B
VO_SNS+
VO_SNSE13
VOUT
C16
100uF
6.3V
1210
J5
VOUT
2
C34
R48
OPT
OPT
+
COUT4
330uF
OPT
7343
+
COUT5
330uF
OPT
7343
IOUT
1
C15
100uF
6.3V
1210
D
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.
G
R12
0.010
2512
R18
OPT
2512
4
3
E15
R11
10K
IOSTEP CLK
E7
GND
CONTRACT NO.
APPROVALS
PCB DES.
TECHNOLOGY
MI
ENG. JIAN L.
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
TITLE: SCHEMATIC
HIGH EFFICIENCY STEP-DOWN CONVERTER
WITH VERY LOW DCR INDUCTOR
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
VOUT
S
CUSTOMER NOTICE
A
Q5
SUD50N03-09P
1
1
RN1
OPT
J6
2
3
4
5
R47
OPT
LOAD STEP CIRCUIT
5
4
3
2
TEMPERATURE COMPENSATION
NETWORK FOR DCR SENSING
ITEMP
SIZE
IC NO.
N/A
PCB NO.
DATE:
2
REV
LTC3866EUF
DEMO CIRCUIT 1829A
Wednesday, December 21, 2011
SHEET
1
2
1 OF
1
A
Similar pages