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ADP2127 Datasheet(PDF) 7 Page - Analog Devices

Part # ADP2127
Description  Ultralow Profile, 500 mA, 6 MHz, Synchronous, Step-Down, DC-to-DC Converters
PDF  20 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADP2127 Datasheet(HTML) 7 Page - Analog Devices

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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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