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ADP2127-1.26-EVALZ Datasheet(PDF) 7 Page - Analog Devices |
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ADP2127-1.26-EVALZ Datasheet(HTML) 7 Page - Analog Devices |
7 / 20 page ADP2126/ADP2127 Rev. A | Page 7 of 20 TYPICAL PERFORMANCE CHARACTERISTICS VIN = 3.6 V, fEXTCLK = 10 MHz, VOUT = 1.20 V, L = 1.0 μH (CKP1608S1R0), CIN = 2.2 μF (GRM153R60J225ME95), COUT = 2.2 μF (GRM153R60G225M), and TA = 25°C, unless otherwise noted. 90 0 10 20 30 40 50 60 70 80 1 10 100 1000 LOAD CURRENT (mA) VIN = 2.1V VIN = 2.5V VIN = 3.6V VIN = 4.2V VIN = 5.5V AUTO MODE PWM MODE Figure 6. Efficiency vs. Load Current 90 30 40 50 60 70 80 2.1 5.1 4.6 4.1 3.6 3.1 2.6 INPUT VOLTAGE (V) ILOAD = 50mA, PWM MODE ILOAD = 100mA, PWM MODE ILOAD = 10mA, PFM MODE ILOAD = 50mA, PFM MODE ILOAD = 100mA, PFM MODE ILOAD = 250mA, PFM MODE Figure 7. Efficiency vs. Input Voltage 1.24 1.23 1.22 1.21 1.19 1.20 1 10 100 1000 LOAD CURRENT (mA) VIN = 2.1V VIN = 2.5V VIN = 3.6V VIN = 4.2V VIN = 5.5V Figure 8. Auto Mode Output Voltage Accuracy 1.205 1.204 1.203 1.202 1 10 100 1000 LOAD CURRENT (mA) VIN = 2.1V VIN = 2.5V VIN = 3.6V VIN = 4.2V VIN = 5.5V Figure 9. PWM Mode Output Voltage Accuracy 250 200 150 100 50 0 2.3 5.5 5.1 4.7 4.3 3.9 3.5 3.1 2.7 INPUT VOLTAGE (V) PWM OPERATION PFM OPERATION Figure 10. Auto Mode Switching Threshold vs. Input Voltage 60 0 10 20 30 40 50 0 100 200 300 400 500 LOAD CURRENT (mA) VIN = 2.1V VIN = 3.6V VIN = 5.5V Figure 11. Output Voltage Ripple vs. Load Current |
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