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LTC4259A Datasheet(PDF) 5 Page - Linear Technology

Part # LTC4259A
Description  Quad IEEE 802.3af Power over Ethernet Controller with AC Disconnect
PDF  32 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4259A Datasheet(HTML) 5 Page - Linear Technology

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LTC4259A
5
4259Af
Figure 3. Current Limit Timing
Figure 4. DC Disconnect Timing
Figure 5. AC Disconnect Timing
TEST TI I G
Figure 6. I2C Interface Timing
Figure 2. Detect, Class and Turn-On Timing in Auto or Semiauto Modes
SCL
SDA
t1
t2
t3
tr
tf
t5
t6
t7
t8
t4
4259A F06
0V
VPORTn
VGATEn
INT
PD
INSERTED
VEE
VCLASS
VT
PORT
TURN ON
(AUTO MODE)
tCLSDLY
tCLASS
4259A F02
tDETDLY
tDET
tPON
VLIM
VCUT
0V
VSENSEn TO VEE
INT
4259A F03
tSTART, tICUT
VMIN
VSENSEn
TO VEE
INT
tDIS
tVMIN
4259A F04
INT
IDETECTn
VOUTn
VOSCIN
tDIS
IACDMIN
PD REMOVED
4259A F05



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