IEEE 802.3af PD Interface and PWM Controllers
with Integrated Power MOSFETs
_______________________________________________________________________________________   9
REGOUT UVLO VOLTAGE
 vs. TEMPERATURE
?/DIV>
100
75
50
25
6.2
6.4
6.6
6.8
7.0
7.2
7.4
6.0
0
125
RISING
FALLING
OPERATING FREQUENCY
vs. TEMPERATURE
?/DIV>
100
75
25
50
250
300
350
400
450
500
550
600
200
0
125
R
RTCT
 = 12k&
C
RTCT
 = 100pF
R
RTCT
 = 24.3k&
C
RTCT
 = 100pF
SOFT-START CURRENT
vs. TEMPERATURE
TEMPERAT RE ?/DIV>
100
75
50
25
31.5
32.0
32.5
33.0
33.5
34.0
31.0
0
125
MINIMUM RCFF AND OPTO LEVELS
vs. TEMPERATURE
TEMPERATURE (癈)
100
75
50
25
1.25
1.50
1.75
2.00
2.25
2.50
2.75
1.00
0
125
RCFF
OPTO
CURRENT-LIMIT COMPARATOR
THRESHOLD vs. TEMPERATURE
TEMPERATURE (癈)
100
75
50
25
0.151
0.152
0.153
0.154
0.155
0.156
0.157
0.158
0.159
0.160
0.150
0
125
HVIN RISING
PPWM TO XFRMRL SKEW
vs. TEMPERATURE
TEMPERATURE (癈)
100
75
50
25
91
92
93
94
95
96
97
98
99
100
90
0
125
FLTINT CURRENT
vs. TEMPERATURE
TEMPERATURE (癈)
100
75
50
25
76
77
78
79
80
81
82
83
84
85
75
0
125
FLTINT SHUTDOWN VOLTAGE
vs. TEMPERATURE
TEMPERATURE (癈)
100
75
50
25
2.0
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
1.9
0
125
RISING
FALLING
POWER MOSFETS R
DS(ON)
vs. TEMPERATURE
TEMPERATURE (癈)
100
75
50
25
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0
0
125
Typical Operating Characteristics (continued)
(V
IN
= (V+ - V
EE
) = 48V, GATE = PGOOD = unconnected, GND connected to OUT, HVIN connected to V+, UVLO = V
EE
, C
INBIAS
= 1礔,
C
REGOUT
= 2.2礔, R
RTCT
= 25k&, C
RTCT
= 100pF, C
BST
= 0.22礔, T
J
= 0癈 to +125癈, unless otherwise noted. Typical values are
at T
J
= +25癈. All voltages are referenced to V
EE
, unless otherwise noted.)
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