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LTC4271 Datasheet(PDF) 8 Page - Analog Devices

Part # LTC4271
Description  8/16-Port IEEE 802.3at PoE PSE Controller with Power Management and LED Control
PDF  30 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

LTC4271 Datasheet(HTML) 8 Page - Analog Devices

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LTC9101-3/LTC9103
8
Rev. 0
For more information www.analog.com
TYPICAL PERFORMANCE CHARACTERISTICS
VEE Measurement vs Temperature
Port Power Measurement
vs Temperature
Powering Up into 180μF
Short Circuit Recovery
CLOCK and DATA WRITE
EYE DIAGRAM
CLOCK and DATA READ
EYE DIAGRAM
LTC9103 CP/CN and DP/DN
Common Mode Correction
Current
EXT3 Pin Current vs Voltage
IDn Pin Current vs Voltage
AGND – VEE = 55V
10.01mV/LSB
TA (°C)
–40 –20
0
20
40
60
80
100
54.5
54.6
54.7
54.8
54.9
55.0
55.1
55.2
91013 G10
AGND – VEE = 55V
SENSEn – VSSKn = 100mV
POWERn = 55W
TA (°C)
–40 –20
0
20
40
60
80
100
54.5
54.6
54.7
54.8
54.9
55.0
55.1
55.2
55.3
55.4
55.5
91013 G11
VEE
FOLDBACK
CURRENT
LIMIT
LOAD FULLY CHARGED
MOSFET ON
5ms/DIV
OUT1A
20V/DIV
GATE1A
10V/DIV
CHANNEL
CURRENT
200mA/DIV
91013 G12
SHORT-CIRCUIT
FAULT APPLIED
FAST PULL-DOWN
FAULT
REMOVED
QUICK CURRENT LIMIT RECOVERY
VEE = –55V
LIMn = E9h
50µs/DIV
GATE
10V/DIV
OUT
50V/DIV
OUT
CURRENT
5A/DIV
91013 G13
N = 337
CP – CN
DP – DN
10ns/DIV
200mV/
DIV
91013 G14
N = 570
CP – CN
DP – DN
10ns/DIV
200mV/
DIV
91013 G15
VCM (V)
0
0.5
1
1.5
2
2.5
3
3.5
–4
–3
–2
–1
0
1
2
3
4
91013 G16
EXT3 – VEE (V)
0
1
2
3
4
5
0
10
20
30
40
50
60
70
80
91013 G17
IDn – VEE (V)
0
1
2
3
4
5
–10
–8
–6
–4
–2
0
2
91013 G18
(RSENSE = 0.1Ω unless otherwise specified.)



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