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ADP122AUJZ-2.7-R7 数据表(PDF) 9 Page - Analog Devices

部件名 ADP122AUJZ-2.7-R7
功能描述  5.5 V Input, 300 mA, Low Quiescent Current, CMOS Linear Regulator
PDF  20 Pages
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

ADP122AUJZ-2.7-R7 数据表(HTML) 9 Page - Analog Devices

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ADP122/ADP123
Rev. 0 | Page 9 of 20
–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 17. 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 18. 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 19. Power Supply Rejection Ratio vs. Headroom Voltage (VIN − VOUT)
0
1
2
3
4
5
10
100
1k
10k
100k
FREQUENCY (Hz)
VOUT = 2.8V
VOUT = 3.3V
VOUT = 4.2V
Figure 20. 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 21 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 22. Load Transient Response, COUT = 1 μF



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