PD69008 datasheet(10/15 Pages) MICROSEMI

10 / 15 page

PD69008 - 8 Ports Power Over Ethernet Manager

Microsemi

Analog Mixed Signal Group

Page 10

2381 Morse Avenue, Irvine, CA 92614, USA; Within the USA: (800) 713-4113, Outside the USA: (949) 221-7100 Fax: (949) 756-0308

Rev. 1.0, 2009-03-15

AT Ports Parameters

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

Automatic recovery from

overload shutdown

TOVLREC value, measured from port shutdown

(can be modified through control port)

Automatic recovery from no-load

shutdown

TUDLREC value, measured from port shutdown

(can be modified through control port)

Cutoff timers accuracy

Typical accuracy of Tcut

Inrush current

IInrsh

For t=50 ms, Cload=180 uF max.

400

450

Output current operating range

Iport

Continuous operation after startup period.

643

Output power available,

operating range

Pport

Continuous operation after startup period,

at port output.

0.57

36.25

Imin1

Must disconnect for t greater than TUVL

Off mode current

Imin2

May or may not disconnect for t greater

than TUVL

7.5

PD power maintenance request

drop-out time limit

TPMDO

Buffer period to handle transitions

300

400

Over load current detection range

Icut

Time limited to TOVL

686

728

771

Over load time limit

TOVL

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).

Turn off time

Toff

From Vport to 2.8 Vdc

500

Time Maintain Power Signature

TMPS

DC modulation time for dc disconnect

AC disconnect impedance

Zac

600

2000

KΩ

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