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ADP2121 Datasheet(PDF) 8 Page - Analog Devices

Part # ADP2121
Description  600 mA, 6 MHz, Synchronous Step-Down DC-to-DC Converter
PDF  20 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADP2121 Datasheet(HTML) 8 Page - Analog Devices

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ADP2121
Rev. B | Page 8 of 20
90
80
75
85
70
65
60
55
50
45
0.1
1
10
100
1000
LOAD CURRENT (mA)
AUTO MODE
VIN = 3.6V
VOUT = 1.82V
TA = –40°C
TA = +85°C
TA = +25°C
Figure 16. Efficiency vs. Load Current Over Temperature
1.87
1.86
1.85
1.84
1.83
1.82
0.1
1
10
100
1000
LOAD CURRENT (mA)
AUTO MODE
VIN = 2.7V
VIN = 3.6V
VIN = 4.2V
VIN = 5.0V
VOUT = 1.82V
Figure 17. Output Voltage Accuracy (Auto Mode)
360
340
320
300
280
260
240
220
200
180
2.3
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
INPUT VOLTAGE (V)
TA = –40°C
TA = +85°C
TA = +25°C
Figure 18. N-Channel Drain-Source On Resistance
100
90
80
70
60
50
40
30
20
10
0
250
200
150
100
50
0
0.1
1
10
100
1000
LOAD CURRENT (mA)
EFFICIENCY
VOUT = 1.82 V
POWER
LOSS
VIN = 2.7V
VIN = 3.6V
VIN = 4.2V
VIN = 5.0V
Figure 19. Efficiency and Power Loss vs. Load Current (Auto Mode)
1.835
1.830
1.825
1.820
1.815
1
10
100
1000
LOAD CURRENT (mA)
VIN = 2.7V
VIN = 3.6V
VIN = 4.2V
PWM MODE
VIN = 5.0V
VOUT = 1.82V
Figure 20. Output Voltage Accuracy (PWM Mode)
400
350
300
250
200
150
100
2.3
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
INPUT VOLTAGE (V)
TA = –40°C
TA = +85°C
TA = +25°C
Figure 21. P-Channel Drain-Source On Resistance



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