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DS_s48SS12001_06082006
ELECTRICAL CHARACTERISTICS CURVES
60
65
70
75
80
85
90
0.25 0.5 0.75 1 1.25
OUTPUT CURRENT (A)
EFFICIENCY (%)
36Vin 48Vin 75Vin
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
0.25 0.5 0.75 1 1.25
OUTPUT CURRENT (A)
POWER DISSIPATION (W
Figure 1: Efficiency vs. load current for minimum, nominal, and
maximum input voltage at 25
°C.
Figure 2: Power dissipation vs. load current for minimum,
nominal, and maximum input voltage at 25
°C.
0.0
0.1
0.2
0.3
0.4
0.5
0.6
30 35 40 45 50 55 60 65 70 75
INPUT VOLTAGE (V)
INPUT CURRENT (A)
Io=1.25A Io=0.75A
Io=0.125A
Figure 3: Typical input characteristics at room temperature.
Figure 4: Turn-on transient at full rated load current (resistive
load) (10 ms/div). Top Trace: Vout (5V/div); Bottom Trace:
ON/OFF Control (2V/div).
3
36Vin
48Vin 75Vin
)