MAX5953A MAXIM [Maxim Integrated Products], MAX5953A Datasheet - Page 9

• Manufacturer Part Number: MAX5953A
• Description: IEEE 802.3af PD Interface and PWM Controllers with Integrated Power MOSFETs
• Manufacturer: MAXIM [Maxim Integrated Products]

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