Datasheet

QUICK START GUIDE FOR DEMONSTRATION CIRCUIT 1366A
IEEE802.3AF/AT POWER-OVER-ETHERNET POWER SOURCING EQUIPMENT CONTROLLER
LTC4266
7
RS3 A
1.00
SD4
U2 LT1761ES5-3.3
1
43
2
5
IN
BYPSHDN
GND
OUT
RS1 C
1.00
R20
18M
C36
0.22uF
X7R
VDD
R6
1.1M
1%
S7
R21
300
A0
GATE3
S4
RS4 C
1.00
TP10
+
C16
10uF
16V
OUT2
SENSE2
OUT3
SDA
+3.3V
A2
Q12
Si2343DS
GND
AUTO
D6
RED
OUT3
+
C2
10uF
100V
TP30
D10
S1B
S2
VDD
A3
D26
S1B
INT
C4 0.1uF
VEE
U3 24LC025
1
2
3
4
8
7
6
5
A0
A1
A2
VSS
VCC
WP
SCL
SDA
JP5
USB VDD
EXT VDD
+3.3V SOURCE
1
3
2
VEE
A0
-55V
PROD
5
12/08/08
REVISION HISTORY
DESCRIPTION DATE APPROVEDECO REV
AUTO
RS4 D
1.00
C58
0.22uF
X7R
OUT2
VDD
GND
C66
1uF
SCL
TP3
RS4 B
1.00
R17
18M
VDD
MSD
Q9
Si2343DS
JP4
HI
LO
AUTO
1
3
2
RESET
D11
S1B
TP29
C22
0.22uF
X7R
VDD
D23
6.2V
GATE4
RS2 C
1.00
OUT4
SD4
GATE2
LO
TP4
MSD
SENSE3
S5
VDD
D18
S5BC
OUT4
TP14
AUTO
JP3
TIE
UNTIE
SDAIN/SDAOUT
1
3
2
OPTIONAL LED DRIVE
SD1
SD4
SDAIN
VDD
RS3 D
1.00
C64
0.47uF
100V
TP31
DR
R23
18M
OUT1
ADDRESS
S1
1
2
3
4
8
7
6
5
Customer Notice:
Linear Technology has made a best effort to
design a circuit that meets customer-supplied specifications;
however, it remains the customers 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
Applications Engineering for assistance.
This circuit is proprietary to Linear Technology and supplied
for use with Linear Technology parts.
RS3 B
1.00
VDD
SCL
J6
1
3
2
4
5 6
7 8
9 10
11
13
12
14
J2
D7
AMBER
R18
300
SD2
REP1
5.1K
A1
TP2RS2 A
1.00
OUT3
RESET
AUTO
D25
S1B
OUT1
GATE1
TP17
REP3
5.1K
VEE
VDD
C65
0.1uF
R16
1.1M
1%
Q4
IRFM120A
RS2 B
1.00
OUT1
RPW2
3.9K
1/4W
TP5
OUT3
RL1
300
A1
RS4 A
1.00
OUT1
VEE
SDAOUT
RS1 B
1.00
J1
SD3
TP1
SD2
Q10
Si2343DS
SCL
RS2 D
1.00
TP9
C68
0.47uF
100V
GND
SD3
R8
300
VDD
TP19
OUT4
QUICKEVA L FOR DEMO ONLY
INT
OUT4
VEE
SENSE4
SD2
VEE
TP8
D15
GRN
R19
1.1M
1%
INT
REP2
5.1K
D5
AMBER
U1
LTC4266CUHF
26 18 21 20 19 22 23 24 27 28 29 30 31 32 25 10
7
6
5
4
38
3
1
37 14 15 16 17 13 33 36 35 34
39
VEE AGND OUT 4 GATE 4 SENSE 4 SENSE 3 GATE 3 OUT 3 SENSE 2 GATE 2 OUT 2 SENSE 1 GATE 1 OUT 1 VEE DGND
AD0
AD1
AD2
AD3
SCL
SDAIN
SDAOUT
INT
SD1 SD2 SD3 SD4
VDD
AUTO
MID
RESET
MSD
VEE
TP7
R22
1.1M
1%
SDAOUT
VEE
SD3
OUT2
RS1 D
1.00
A1
S3
VDD
5
DC1366A
Fr iday, Januar y 30, 2009
12
Cus to m
SCH, LTC4266CUHF, IEEE802.3AT PoE QUAD PSE
1366a-5.dsn
mi 11/12/07
CONTROLLER
SIZE
SCALE:
CAGE CODE
DWG NO
REV
S HEET
OF
FILENAME:
TITLE
CONTRA CT NO.
APPROVALS
DA TE
DRAWN
CHECKED
APPROVED
ENGINEER
DESIGNER
TECHNOLOGY
1630 McC art hy Bl vd.
Mi lpitas, CA 95035
Phone: [phone]
Fax: [phone]
D8
S1B
SD2
TP6
JP2
HI
LO
MIDSPAN
1
3
2
VDD
D12
GRN
C47
0.22uF
X7R
D24
S1B
D27
S1B
VDD
Q11
Si2343DS
HI
SD1
R24
300
Q3
IRFM120A
GND
C67
0.01uF
OUT2
SD1
TP18
TP32
GND
VDD
Q2
IRFM120A
WP
SD1
RPW1
300
VEE
D14
GRN
D19
39V
RS1 A
1.00
D13
GRN
S6
VDD
A0
SD3
R7
18M
RS3 C
1.00
D9
S1B
Q1
IRFM120A
SD4
SENSE1
TP16
SDAIN