NCP1090DBRG Datasheet, PDF (6/12 Pages) ON Semiconductor – Integrated IEEE 802.3af PoE-PD Interface Controller

NCP1090, NCP1091, NCP1092
Table 3. OPERATING CONDITIONS (All values are with respect to VPORTN unless otherwise noted.)
Symbol
Parameter
Min
Typ
Max
Units
Conditions
PASS−SWITCH AND CURRENT LIMITING
Ron
Pass−switch Rds−on
−
0.5
1
W
Measured with I(RTN) =
200 mA
I_inrush
Inrush current with Rinrush = 178 kW
75
120
170
mA Measured at
RTN−VPORTN = 3 V
I_ilim
Operating current limit with Rinrush = 425
500
178 kW
575
mA Current limit threshold
POWER GOOD INDICATOR
Vds_pgood_on
RTN−VPORTN threshold voltage
required for power good status
0.8
1
1.2
V
RTN−VPORTN falling
Vds_pgood_off
RTN−VPORTN latchoff threshold
voltage
9
10
11
V
RTN−VPORTN rising
Pgood_filter
PGOOD filter time
100
mS
Rising and falling /
for information only
Ipgood
I(PGOOD) sinking current
−
−
5
mA
Vpgood_low
PGOOD voltage output low
−
0.2
0.5
V
Voltage with respect to RTN
CURRENT CONSUMPTION
IvportP
I(VPORTP) internal current
consumption
−
600
900
mA
VPORTP = 48 V
THERMAL SHUTDOWN
TSD
Thermal shutdown threshold
150
−
−
°C Tj Tj = junction temperature
Thyst
Thermal hysteresis
−
15
−
°C Tj Tj = junction temperature
THERMAL RATINGS
Ta
Ambient temperature
−40
−
85
°C
Tj
Junction temperature
−
−
125
°C
3. A tolerance of 1% on the Rclass resistor is included in the min/max values.
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