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PD39208 Datasheet(PDF) 9 Page - Microchip Technology

Part # PD39208
Description  PoE PSE Manager
PDF  34 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PD39208 Datasheet(HTML) 9 Page - Microchip Technology

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Symbol Parameter
Conditions
Min Typ Max Units
ILIM
Port current limit
802.3af
400 425 450 mA
802.3at
790 850 892 mA
TLIM
Port current limit time
VMAIN–VPORT_NEGx <30 V
1
2
3
ms
IUDL
DC disconnect under-load current
2 pairs
6
7.5 9
mA
TMPDO
PD maintain power signature dropout
time limit
322 324 326 ms
TMPS
PD maintain power
802.3at
46
48
50
ms
TOFF
Turn off time
From VMAIN to 2.8 V
500 ms
1.
Can be overridden by communication command.
2.6
Port Current Monitoring
Table 2-6. Port Current Monitoring
Symbol
Conditions
Typ
Max
Units
Resolution
Reported as 14 bits
10
Bits
LSB
122.07
µA
Measurement period
16
mS
Accuracy
50 mA < IPORT < 150 mA
9
%
150 mA < IPORT < 350 mA
4.5
%
350 mA < IPORT < 600 mA
3.5
%
2.7
Port Voltage Monitoring
Table 2-7. Port Voltage Monitoring
Symbol
Conditions
Typ
Max
Units
Resolution
10
Bits
LSB
58.6
mV
Measurement period
3
ms
Accuracy
3.3
%
2.8
Main Voltage Monitoring
Table 2-8. Main Voltage Monitoring
Symbol
Conditions
Typ
Max
Units
Resolution
10
Bits
LSB
58.6
mV
Measurement period
3
ms
PD39208
Electrical Specifications
© 2020 Microchip Technology Inc.
Datasheet
DS00003555B-page 9



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