TPS23753A
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SLVS933B –JULY 2009–REVISED JANUARY 2010
TYPICAL CHARACTERISTICS
DETECTION BIAS CURRENT
PoE CURRENT LIMIT
vs
vs
VOLTAGE
TEMPERATURE
458
456
8
7
6
5
4
3
2
1
TJ = 125°C
454
452
450
TJ = 25°C
448
446
TJ = -40°C
0
0
0
10
-40
20
40
120
-20
60
80
100
8
2
6
4
TJ - Junction Temperature - °C
VVDD-VSS - PoE Voltage - V
Figure 3.
Figure 4.
CONVERTER START TIME
CONVERTER STARTUP SOURCE CURRENT
vs
vs
TEMPERATURE
VVDD1
6
160
140
120
100
80
VVC = 8.6 V
TJ = -40°C
TJ = 25°C
CVC = 22 mF
5
4
VVDD1 = 10.2 V
TJ = 125°C
3
VVDD1 = 19.2 V
2
1
60
VVDD1 = 35 V
40
0
5
20
-40
10
15
20
25
30
35
40
45
50
55
60
-20
0
20
40
60
80
100
120
VVDD1-RTN - V
TJ - Junction Temperature - °C
Figure 5.
Figure 6.
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