ADP124ACPZ-3.0-R7 查看數據表（PDF） - Analog Devices
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ADP124ACPZ-3.0-R7 Datasheet PDF : 20 Pages
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Data Sheet
–10
–20
–30
IOUT = 100µA
IOUT = 1mA
IOUT = 10mA
–40
IOUT = 100mA
IOUT = 300mA
–50
IOUT = 500mA
–60
–70
–80
VIN = VOUT + 1V
–90
VRIPPLE = 50mV
CIN = COUT = 1µF
–100
10
100
1k
10k
100k
1M
10M
FREQUENCY (Hz)
Figure 19. Power Supply Rejection Ratio vs. Frequency, VOUT = 4.2 V, VIN = 5.2 V
–10
–20
VOUT = 2.8V, IOUT = 10mA
VOUT = 3.3V, IOUT = 10mA
VOUT = 4.2V, IOUT = 10mA
–30
VOUT = 2.8V, IOUT = 500mA
VOUT = 3.3V, IOUT = 500mA
–40
VOUT = 4.2V, IOUT = 500mA
–50
–60
–70
–80
VIN = VOUT + 1V
–90 VRIPPLE = 50mV
CIN = COUT = 1µF
–100
10
100
1k
10k
100k
1M
10M
FREQUENCY (Hz)
Figure 20. Power Supply Rejection Ratio vs. Frequency,
Various Output Voltages and Load Currents
–10
–20
VIN = 3.1V, IOUT = 10mA
VIN = 3.3V, IOUT = 10mA
VIN = 3.8V, IOUT = 10mA
–30 VIN = 4.8V, IOUT = 10mA
–40
–50
–60
–70
–80
–90
–100
VIN = 3.1V, IOUT = 500mA
VIN = 3.3V, IOUT = 500mA
VIN = 3.8V, IOUT = 500mA
VIN = 4.8V, IOUT = 500mA
10
100
1k
10k
100k
1M
10M
FREQUENCY (Hz)
Figure 21. Power Supply Rejection Ratio vs. Headroom Voltage (VIN − VOUT),
VOUT = 2.8 V
ADP124/ADP125
5
VOUT = 4.2V
4
VOUT = 3.3V
3
2
1
VOUT = 2.8V
0
10
100
1k
10k
100k
FREQUENCY (Hz)
Figure 22. Output Noise Spectrum, VIN = 5 V
70
65
VOUT = 4.2V
60
VOUT = 3.3V
55
50
45
VOUT = 2.8V
40
35
30
25
20
0.001
0.01
0.1
1
10
100
1k
ILOAD (mA)
Figure 23. Output Noise vs. Load Current and Output Voltage, VIN = 5 V
IOUT
1mA TO 500mA LOAD STEP
1
2
VOUT
VIN = 4V
VOUT = 3.3V
CH1 500mA Ω BW CH2 50.0mV BW M40.0µs A CH1 200mA
T 9.800%
Figure 24. Load Transient Response, COUT = 1 μF
Rev. D | Page 9 of 20
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