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ADP122ACPZ-2.5-R7 数据表(PDF) 9 Page - Analog Devices

部件名 ADP122ACPZ-2.5-R7
功能描述  5.5 V Input, 300 mA, Low Quiescent Current, CMOS Linear Regulator
PDF  24 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

ADP122ACPZ-2.5-R7 数据表(HTML) 9 Page - Analog Devices

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Data Sheet
ADP122/ADP123
Rev. E | Page 9 of 24
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
10
100
1k
10k
100k
1M
10M
FREQUENCY (Hz)
IOUT = 100µA
VIN = VOUT + 0.5V
VRIPPLE = 50mV
CIN = COUT 1µF
IOUT = 1mA
IOUT = 10mA
IOUT = 100mA
IOUT = 200mA
IOUT = 300mA
Figure 21. Power Supply Rejection Ratio vs. Frequency, VOUT= 4.2 V, VIN = 4.7 V
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
10
100
1k
10k
100k
1M
10M
FREQUENCY (Hz)
VOUT = 2.8V, IOUT = 1mA
VIN = VOUT + 0.5V
VRIPPLE = 50mV
CIN = COUT 1µF
VOUT = 3.3V, IOUT = 1mA
VOUT = 4.2V, IOUT = 1mA
VOUT = 2.8V, IOUT = 300mA
VOUT = 3.3V, IOUT = 300mA
VOUT = 4.2V, IOUT = 300mA
Figure 22. Power Supply Rejection Ratio vs. Frequency, Various Output
Voltages and Load Currents
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
10
100
1k
10k
100k
1M
10M
FREQUENCY (Hz)
VIN = 3.1V, IOUT = 1mA
VRIPPLE = 50mV
CIN = COUT 1µF
VIN = 3.3V, IOUT = 1mA
VIN = 3.8V, IOUT = 1mA
VIN = 4.8V, IOUT = 1mA
VIN = 3.1V, IOUT = 300mA
VIN = 3.3V, IOUT = 300mA
VIN = 3.8V, IOUT = 300mA
VIN = 4.8V, IOUT = 300mA
Figure 23. Power Supply Rejection Ratio vs. Headroom Voltage (VIN − VOUT),
VOUT = 2.8 V
0
1
2
3
4
5
10
100
1k
10k
100k
FREQUENCY (Hz)
VOUT = 2.8V
VOUT = 3.3V
VOUT = 4.2V
Figure 24. Output Noise Spectrum
30
35
40
45
50
55
60
65
70
0.001
0.01
0.1
1
10
100
1000
IOUT (mA)
VOUT = 4.2V
VOUT = 3.3V
VOUT = 2.8V
Figure 25. Output Noise vs. Load Current and Output Voltage
CH1
200mA Ω B
W CH2 50.0mV
B
W M 40.0µs
A CH1
196mA
1
2
T
10.20%
VOUT
VIN = 3.7V
VOUT = 3.3V
1mA TO 300mA LOAD STEP
IOUT
Figure 26. Load Transient Response, COUT = 1 μF



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