
ELECTRICAL CHARACTERISTICS CURVES
(%)  | 95  | 
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EFFICIENCY  | 
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90  | 18Vin  | 24Vin  | 
  | 36Vin  | 
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85  | 
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  | 80  | 
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  | 75  | 
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  | 70  | 
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  | 65  | 
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  | 60  | 
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  | 55  | 
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  | 50  | 
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  | 0.1  | 2  | 4  | 6  | 8  | 10  | 12  | 
OUTPUT CURRENT (A)
Figure 1: Efficiency vs. load current for minimum, nominal, and maximum input voltage at 25°C.
(W)  | 5.0  | 
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DISSIPATION  | 4.5  | 18Vin  | 
  | 24Vin  | 36Vin  | 
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4.0  | 
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POWER  | 
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3.5  | 
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  | 3.0  | 
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  | 2.5  | 
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  | 2.0  | 
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  | 1.5  | 
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  | 1.0  | 
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  | 0.5  | 
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  | 0.0  | 
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  | 0.1  | 2  | 4  | 6  | 8  | 10  | 12  | 
OUTPUT CURRENT(A)
Figure 2: Power dissipation vs. load current for minimum, nominal, and maximum input voltage at 25°C.
(A)  | 1.60  | 
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CURRENT  | 1.40  | Io=12A  | 
  | Io=7.2A  | Io=1.2A  | 
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INPUT  | 1.20  | 
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  | 1.00  | 
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  | 0.80  | 
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  | 0.60  | 
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  | 0.40  | 
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  | 0.20  | 
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  | 0.00  | 
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  | 15  | 20  | 25  | 30  | 35  | 
INPUT VOLTAGE (V)
Figure 3: Typical input characteristics at room temperature. | Figure 4:  | 
  | Top Trace: Vout (1V/div); Bottom Trace: ON/OFF Control  | 
  | (5V/div).  | 
3
DS_S24SA1R812_05092006