max5074aup Maxim Integrated Products, Inc., max5074aup Datasheet - Page 6

• Manufacturer Part Number: max5074aup
• Description: Power Ic With Integrated Mosfets For Isolated Ieee 802.3af Pd And Telecom Power-supply Applications
• Manufacturer: Maxim Integrated Products, Inc.

Power IC with Integrated MOSFETs for Isolated IEEE
802.3af PD and Telecom Power-Supply Applications
(V
V
6
RAMP
HVIN
600
550
500
450
400
350
300
250
200
160
159
158
157
156
155
154
153
152
151
150
_______________________________________________________________________________________
-40
-40
= 48V, V
= V
HVIN RISING
-25 -10 5
-25
UVLO
THRESHOLD vs. TEMPERATURE
CURRENT-LIMIT COMPARATOR
-10 5 20 35 50
R
C
OPERATING FREQUENCY
RTCT
RTCT
R
C
INBIAS
= 3V, T
vs. TEMPERATURE
RTCT
RTCT
= 12kΩ
= 100pF
TEMPERATURE (°C)
TEMPERATURE (°C)
20
= 25kΩ
= 100pF
35 50 65
= 15V, C
A
= T
2.8
2.7
2.6
2.5
2.4
2.3
2.2
2.1
2.0
1.9
1.8
65 80
J
-40
= -40°C to +125°C, unless otherwise noted. Typical values are at T
80
INBIAS
-25
95
95
VOLTAGE vs. TEMPERATURE
-10 5 20 35 50
110
110
FALLING
RISING
FLTINT SHUTDOWN
= 1µF, C
125
125
TEMPERATURE (°C)
REGOUT
33.00
32.75
32.50
32.25
32.00
31.75
31.50
31.25
31.00
Typical Operating Characteristics (continued)
115
114
113
112
111
110
109
108
107
106
105
65 80
-40
-40
-25 -10 5
-25
= 2.2µF, R
95
-10 5 20 35 50
PPWM TO XFRMRL SKEW
110
SOFT-START CURRENT
vs. TEMPERATURE
vs. TEMPERATURE
125
TEMPERATURE (°C)
TEMPERATURE (°C)
20
RTCT
35 50 65
0.70
0.65
0.60
0.55
0.50
0.45
0.40
0.35
0.30
0.25
0.20
= 25kΩ, C
65 80
-40
80
-25
95
95
-10 5 20 35 50
POWER MOSFETS R
110
110
RTCT
vs. TEMPERATURE
125
125
TEMPERATURE (°C)
= 100pF, C
3.00
2.75
2.50
2.25
2.00
1.75
1.50
1.25
1.00
85
84
83
82
81
80
79
78
77
76
75
65 80
A
-40
-40
= +25°C, unless otherwise noted.)
DS(ON)
FLTINT CURRENT vs. TEMPERATURE
MINIMUM RCFF AND OPTO LEVELS
-25 -10 5
-25
BST
95
-10 5 20 35 50
= 0.22µF, V
110
vs. TEMPERATURE
OPTO
RCFF
125
TEMPERATURE (°C)
TEMPERATURE (°C)
20
35 50 65
CSS
65 80
= V
80
CS
95
95
110
110
= 0V,
125
125