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LTC4278 Datasheet(PDF) 10 Page - Linear Technology

Part # LTC4278
Description  Quad PoE/PoE/LTPoE PSE Controller
Download  30 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4278 Datasheet(HTML) 10 Page - Linear Technology

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LTC4266A/LTC4266C
10
4266acfc
TEST TIMING DIAGRAMS
Figure 1. Detect, Class and Turn-On Timing in AUTO Pin or Semi-auto Modes
Figure 2. Current Limit Timing
Figure 3. DC Disconnect Timing
Figure 4. Shut Down Delay Timing
Figure 5. I2C Interface Timing
VPORTn
INT
VOC
VEE
tDET
tME
tMEL
VMARK
VCLASS
15.5V
20.5V
tCLE
tCLE
tCLEON
PD
CONNECTED
0V
4266AC F01
FORCED-CURRENT
CLASSIFICATION
tPON
FORCED-
VOLTAGE
VLIM
VCUT
0V
VSENSEn TO VEE
INT
4266AC F02
tSTART, tICUT
VMIN
VSENSEn
TO VEE
INT
tDIS
tMPS
4266AC F03
VGATEn
VEE
MSD or
SHDNn
tSHDN
tMSD
4266AC F04
SCL
SDA
t1
t2
t3
tr
tf
t5
t6
t7
t8
t4
4266AC F05


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