PD64012 Datasheet, PDF (4/16 Pages) List of Unclassifed Manufacturers – 12-channel PoE Manager

PD64012
12-CHANNEL PoE MANAGER
Electrical Characteristics for Analog I/O Pads ^(continued)
PARAMETER
Pin Name
Operating voltage
Current consumption
Pin Name
Output voltage
MIN.
MAX.
ASICINI, I2CINI
0
ADC2p5
-1
+1
IREF
1.21
1.34
UNIT
REMARKS
V
µA
V With external 24.9 kΩ resistor to ground
Dynamic Characteristics
The PD64012 is an advanced power-limiting device that uses three programmable current level thresholds (I_min, I_cut,
I_lim) and two timers (T_min, T_cut ), to operate as shown in Figure 2. Loads that dissipate more than I_cut for longer than
T_cut (OVL_S to OVL) are classified as overloads and are automatically shutdown. Output power dissipation below
I_min for during more than T_min (UDL_S to UDL) will be classified as no-load and will also be shutdown. Automatic
recovery from overload and no-load conditions are attempted every T_OVLREC and T_UDLREC periods (typically 5 and 1
seconds, respectively). In any case, output power is limited to I_lim, which is a maximum peak power allowed at the
port.
PARAMETER
Automatic recovery from
overload shutdown
Automatic recovery from
no-load shutdown
Cutoff timers accuracy
CONDITIONS
TOVLREC value, measured from port shutdown
(can be modified through control port)
TUDLREC value, measured from port shutdown
(can be modified through control port)
Typical accuracy of Tcut
MIN.
TYP.
5
1
10
MAX.
UNIT
s
s
ms
Inrush current
IInrsh
For t=50 ms, Cload=180 uF max. 400
450
mA
Output current
operating range
Iport
Continuous operation after
10
startup period.
350
mA
Output power available, Pport
Continuous operation after
0.57
operating range
startup period, at port output.
15.4
W
Off mode current
Imin1
Must disconnect for t greater than 0
TUVL
5
mA
Imin2
May or may not disconnect for t 5
greater than TUVL
7.5
10
mA
PD power maintenance TPMDO Buffer period to handle
300
request drop-out time
transitions
limit
400
ms
Over load current
Icut
Time limited to TOVL
350
detection range
400
mA
Over load time limit
TOVL
50
75
ms
Turn on rise time
Trise
From 10% to 90% of Vport
15
us
(specified for PD load consisting
of 100 uF capacitor in parallel to
200 Ω).
Turn off time
Toff
From Vport to 5 Vdc
500
ms
Thermal Data
Power consumption – the internal power consumption of a single device from the DC input is based on:
Input voltage range………… 44 to 57 VDC
Input current………………… 10 mA typ.; 15 mA max.
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06-0003-058 (Rev. 2.8) / 5 August 2004
© PowerDsine 2003
Information in this document subject
to change without prior notice.