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ADP1148AR Datasheet(PDF) 5 Page - Analog Devices |
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ADP1148AR Datasheet(HTML) 5 Page - Analog Devices |
5 / 16 page Typical Performance Characteristics–ADP1148, ADP1148-3.3, ADP1148-5 –5– REV. A MAXIMUM OUTPUT CURRENT – A 200 0 0 5 123 4 150 100 50 Figure 3. Selecting RSENSE vs. Maxi- mum Output Current OUTPUT CURRENT – A 100 95 80 0.01 0.03 3.0 0.1 0.3 1.0 90 85 I Q GATE CHARGE I 2R Figure 6. Typical Efficiency Losses LOAD CURRENT – A 60 40 –60 0 0.5 2.5 1.0 1.5 2.0 20 0 –20 –40 FIGURE 1 CIRCUIT VIN = 6V VIN = 12V Figure 9. Load Regulation L = 50 H RSENSE = 0.02 L = 25 H RSENSE = 0.02 L = 50 H RSENSE = 0.05 (VIN–VOUT) VOLTAGE – V 1000 800 0 05 234 1 600 400 200 Figure 5. Selecting Minimum Output Capacitor vs. (VIN–VOUT) and Inductor VIN +40 +20 –60 04 16 6 8 10 12 14 0 –20 –40 FIGURE 1 CIRCUIT ILOAD = 1A ILOAD = 0.1A Figure 8. ADP1148-5 Output Voltage Change vs. Input Voltage VSHUTDOWN = 2V INPUT VOLTAGE – V 30 0 46 20 810 12 14 16 18 25 20 15 10 5 Figure 11. Supply Current in Shutdown FREQUENCY – kHz 1000 0 0 300 100 200 400 200 800 600 VIN = 12V VIN = 10V VIN = 7V VSENSE = VOUT = 5V Figure 4. Operating Frequency vs. Timing Capacitor Value INPUT VOLTAGE – V 100 86 80 020 4 8 12 16 98 88 84 82 92 90 96 94 FIGURE 1 CIRCUIT ILOAD = 1A ILOAD = 100mA Figure 7. Efficiency vs. Input Voltage INPUT VOLTAGE – V 1.6 0.0 46 20 ACTIVE MODE SLEEP MODE 8 10 12141618 1.4 0.8 0.6 0.4 0.2 1.2 1.0 Figure 10. DC Supply Current |
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