DC1286A - Schematic

B
JP4
DMAX
3
2
1
1
2
4
U1*
3
CC1
10nF
D
E
ROSC
66.5k
CSS
0.1uF
RC1*
R1
12.4k
CC2
220pF
R2
475k
VOUT
CF
0
RF
0
3
3V8
24
SENSE1+
23
SENSE1-
22
2
SLOPE
3
BLANK
4
PHASEMODE
SW1
RUN
R10
10
VIN
20
R3*
SS
INTVCC
19
7
ITH
G1
18
8
FB
PGND
17
9
SGND
G2
16
NC
15
SENSE2-
14
SENSE2+
13
P10
10
CLKOUT
P11
11
SYNC
12
PLLFLTR
C3
10nF
R11
24.9k
FREQ
C2
4.7uF
+VIN
100uF
63V
R5
(Opt.)
6.8uF
50V
6.8uF
50V
COUT1,2,3,4,7
CIN1,2,3
GND
E3
+VOUT*
+48V
3
R8
.005
1W
R4
10
E2
E4
R7
(Opt.)
CU1
1uF
E1
+VIN*
COUT5,6
R6
.005
1W
Q3*
Q4*
C4
10nF
1
Q1*
Q2*
21
6
+VOUT
4
RUN
5
D1
PDS760
2
C1
1nF
DMAX
L1
19.4uH
PA2050-193
+VIN
+
1
OFF
ON
75%
84%**
96%
1.66
1.0**
0.625
JP3
SLOPE
3
2
1
JP2
BLANK
3
2
1
3
2
1
JP1
PHASE
C
**Jumper Open
325ns
250ns**
175ns
180°
120°
A
D2
PDS760
2
1
L2
19.4uH
PA2050-193
E5
GND
E6
GND
E7
GND
E8
GND
2
2
+VIN
JP5
U1 Bias
2
4
R9
10k
Q5
PZTA42
VIN
LTC3862EGN
HAT2266H
Opt.
84.5k
68k
5 - 36V
DC1286A-B
LTC3862EGN-1
HAT2279H
Opt.
150k
39k
8 - 36V
3 - 5A
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.
2
Optional Bias Circuit
LTC CONFIDENTIAL - FOR CUSTOMER USE ONLY
A
DC1286A-A
IOUT
(max)
2 - 5A
Customer Notice
D3
PBZ12B
1
U1
Q2,Q4
Q1,Q3
R3
RC1
+VIN
12V
3
1
1
3
2
1
*
ASSEMBLY
B
C
LINEAR TECHNOLOGY CORPORATION
1630 McCarthy Blvd.
Milpitas, CA. 95035
Phone : (408) 432-1900 Fax : (408) 434-0507
Title
Size
1
LTC3862EGN / LTC3862EGN-1
48V Output Boost Converter
Document Number
Rev
Demo Circuit 1286A-A / B
Date:
Monday, July 07, 2008
D
Sheet
of
1
E
A
1
Similar pages