TPS23757
www.ti.com
TYPICAL CHARACTERISTICS
SLVS948D – JULY 2009 – REVISED NOVEMBER 2013
8
DETECTION BIAS CURRENT
vs
VOLTAGE
485
PoE CURRENT LIMIT
vs
TEMPERATURE
7
480
6
5
4
3
125 ° C
25 ° C
475
470
2
1
0
?40 ° C
465
460
0
2
4
6
8
10
?40
?20
0
20
40
60
80
100
120
T J - Junction Temperature - C
(V VDD ? V VSS ) ? PoE Voltage ? V
Figure 3.
CONVERTER START TIME
vs
G001
o
Figure 4.
CONVERTER STARTUP CURRENT
vs
160
TEMPERATURE
6
V VDD1
T J = -40 C
140
C VC = 22 m F
V VDD1 = 10.2 V
5
V VC = 8.6V
o
T J = 25 C
T J = 125 C
120
100
80
60
4
3
2
o
o
40
20
V VDD1 = 35 V
1
0
?40
?20
0
20
40
60
80
100
120
5
10
15 20
25
30
35
40
45 50
55 60
T J - Junction Temperature - C
Figure 5.
o
V VDD1-RTN ? V
Figure 6.
Copyright ? 2009–2013, Texas Instruments Incorporated
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