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ADP5020ACPZ-R7 Datasheet(PDF) 11 Page - Analog Devices |
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ADP5020ACPZ-R7 Datasheet(HTML) 11 Page - Analog Devices |
11 / 28 page ADP5020 Rev. 0 | Page 11 of 28 VIN = 4.5 V, VOUT1 = 2.8 V, VOUT2 = VOUT3 = 1.8 V, IOUT = 100 mA, C4 = C1 = 10 μF, C2 = 4.7 μF, C3 = 1 μF, TJ = 25°C, unless otherwise noted. EFF1 (1.1V) EFF2 (1.2V) EFF3 (1.3V) EFF4 (1.4V) EFF5 (1.5V) EFF6 (1.6V) EFF7 (1.7V) EFF8 (1.8V) 0.90 0.85 0.80 0.75 0.70 0.65 0.60 0.55 0.50 0 50 100 150 200 250 300 LOAD CURRENT (mA) Figure 12. Buck 2 Efficiency vs. Load Current BUCK 2 OUTPUT = 50mV/DIV ILOAD = 100mA/DIV TIME = 100µs/DIV BUCK 2 ILOAD Figure 13. Buck 2 Load Transient Response 1.2 1.0 0.8 0.6 0.4 0.2 0 2.0 2.5 3.0 3.5 4.0 4.5 5.0 INPUT VOLTAGE (V) ISHTDN (µA) @ –40°C ISHTDN (µA) @ +25°C ISHTDN (µA) @ +125°C Figure 14. Shutdown Current vs. Input Voltage ENABLE BUCK 2 BUCK 1 OUTPUT = 2V/DIV BUCK 2 OUTPUT = 1V/DIV TIME = 5ms/DIV Figure 15. Startup Sequence of the Three Regulators, Set by Default BUCK 2 OUTPUT = 1V/DIV SW2 OUTPUT = 2V/DIV TIME = 500µs/DIV SW2 BUCK 2 Figure 16. Buck 2 Enable Startup BUCK 1 OUTPUT = 1V/DIV SW1 OUTPUT = 2V/DIV TIME = 500µs/DIV SW1 BUCK 1 Figure 17. Buck 1 Enable Startup |
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