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PD69108/F датащи(PDF) 5 Page - Microsemi Corporation

номер детали PD69108/F
подробное описание детали  8 PORTS PSE POE MANAGER
PDF  17 Pages
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производитель  MICROSEMI [Microsemi Corporation]
домашняя страница  http://www.microsemi.com
Logo MICROSEMI - Microsemi Corporation

PD69108/F датащи(HTML) 5 Page - Microsemi Corporation

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PD69108/F
DATASHEET
Copyright © 2013
Microsemi
Rev. 1.6
Analog Mixed Signal Group
1 Enterprise, Aliso Viejo, CA 92656, USA; Within the USA: (800) 713-4113, Outside the USA: (949) 221-7100 Fax: (949) 756-0308
5
8 PORTS PSE POE MANAGER
TM
®
Dynamic Characteristics
The PD69108 utilizes three current level thresholds (Imin, Icut, Ilim) and three timers (Tmin, Tcut, Tlim).
Loads that consume Ilim current for more than Tlim are classified as being in 'short circuit state' and are shutdown.
Loads that dissipate more than Icut for longer than Tcut are classified as ‘overloads’ and are automatically shutdown.
If output power is below Imin for more than Tmin, the PD is classified as ‘no-load’ and is shutdown.
Automatic recovery from over-load condition is attempted every TOVLREC periods (typically 1 second). Output power is
limited to Ilim, which is a maximum peak current allowed at the port.
IEEE802.3 AF Mode Parameters
PA R A M ETER
C OND I T I ONS
M I N.
TY P.
M AX.
UNI T
Automatic recovery from no-
load shutdown
TUDLREC value, measured from port shutdown
point (can be modified through control port)
1
Sec
Cutoff timers accuracy
Typical accuracy of Tcut
2
ms
Inrush current
IInrsh
For t = 50 ms, Cload= 180 uF max.
400
450
mA
Output current operating range
Iport
Continuous operation after startup
period.
10
350
mA
Output power available
operating range
Pport
Continuous operation after startup
period, at port output.
0.57
15.4
W
Off mode current
Imin1
Must disconnect for T greater than
TUVL
0
5
mA
Imin2
May or may not disconnect where
T is greater than TUVL
5
7.5
10
mA
PD power maintenance
request drop-out time limit
TPMDO
Buffer period to handle transitions
300
400
ms
Over-load current detection
range
Icut
Time limited to TOVL
350
400
mA
Over load time limit
TOVL
50
75
ms
Turn on rise time
Trise
From 10% to 90% of Vport
(Specified for PD load consisting of 100 uF
capacitor in parallel to 200
Ω).
15
us
Turn off time
Toff
From Vport to 2.8 VDC
500
ms
Time maintain power signature
TMPS
DC modulation time for DC
disconnect
49
ms



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