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MAX253CPA Datasheet(PDF) 4 Page - Maxim Integrated Products |
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MAX253CPA Datasheet(HTML) 4 Page - Maxim Integrated Products |
4 / 18 page Transformer Driver for Isolated RS-485 Interface 4 _______________________________________________________________________________________ 10 0 0 40 220 OUTPUT VOLTAGE vs. LOAD CURRENT (FS = LOW) 2 8 LOAD CURRENT (mA) 80 6 4 1 3 9 7 5 20 60 140 120 100 160 180 200 CIRCUIT OF FIGURE 6 VIN = 5.0V TURNS RATIO = 1:1 CIRCUIT OF FIGURE 6 VIN = 5.0V TURNS RATIO = 1:1.3 CIRCUIT OF FIGURE 7 VIN = 3.3V TURNS RATIO = 1:2.1 MEASURED AT TP1 10 0 0 40 220 OUTPUT VOLTAGE vs. LOAD CURRENT (FS = HIGH) 2 8 LOAD CURRENT (mA) 80 6 4 1 3 9 7 5 20 60 140 120 100 160 180 200 CIRCUIT OF FIGURE 6 VIN = 5.0V TURNS RATIO = 1:1 CIRCUIT OF FIGURE 6 VIN = 5.0V TURNS RATIO = 1:1.3 CIRCUIT OF FIGURE 7 VIN = 3.3V TURNS RATIO = 1:2.1 MEASURED AT TP1 CIRCUIT OF FIGURE 1 SWITCHING WAVEFORMS (TWO CYCLES) D1 D2 CIRCUIT OF FIGURE 1 SWITCHING WAVEFORMS (BREAK BEFORE MAKE) D1 D2 CIRCUIT OF FIGURE 6 TIME FROM SHUTDOWN TO POWER-UP SD TP1 (OUTPUT VOLTAGE) ____________________________Typical Operating Characteristics (continued) (Circuit of Figure 6, VIN = 5V ±10%, TA = +25°C, unless otherwise noted.) 100 0 0 40 120 200 EFFICIENCY vs. LOAD CURRENT (FS = HIGH) 20 80 LOAD CURRENT (mA) 80 160 60 40 10 30 90 70 50 20 60 140 100 180 VIN = 5.5V VIN = 4.5V |
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