ADP170 Analog Devices, Inc., ADP170 Datasheet - Page 9

• Manufacturer Part Number: ADP170
• Description: 300 Ma, Low Quiescent Current, Cmos Linear Regulators
• Manufacturer: Analog Devices, Inc.

Figure 18. Power Supply Rejection Ratio vs. Frequency, Various Output
Figure 17. Power Supply Rejection Ratio vs. Frequency, V
0.01
0.1
10
–30
–40
–50
–60
–70
–80
–90
–30
–40
–50
–60
–70
–80
–90
1
10
10
10
V
I
C
LOAD
3V, 1mA
1.8V, 1mA
0.8V, 1mA
3V, 300mA
1.8V, 300mA
0.8V, 300mA
IN
OUT
300mA
200mA
100mA
10mA
1mA
0.8V
1.8V
3.0V
= 3.6V
100
100
= 1µF
Figure 19. Output Noise Spectrum
= 10mA
Voltages and Load Currents
100
1k
1k
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
1k
10k
10k
100k
100k
10k
1M
1M
OUT
= 3.0 V
100k
10M
10M
Rev. 0 | Page 9 of 20
1
2
1
2
70
60
50
40
30
20
10
Figure 20. RMS Noise vs. Load Current and Output Voltage
0
0.001
Figure 22. Load Transient Response, C
CH1
CH1
Figure 21. Load Transient Response, C
200mA Ω
200mA Ω
0.01
1mA TO 300mA LOAD STEP,
1mA TO 300mA LOAD STEP,
CH2 50.0mV
CH2 50.0mV
0.1
LOAD CURRENT (mA)
2.5A/µs
2.5A/µs
I
I
LOAD
LOAD
V
V
OUT
OUT
B
B
W
W
1
1.8V
0.8V
M40.0µs
3V
T
M40.00µs A CH1
T
ADP170/ADP171
159.800µs
160.680µs
IN
IN
10
and C
and C
A CH1
V
V
V
V
IN
OUT
IN
OUT
OUT
OUT
= 3.6V
= 3.6V
100
= 4.7 μF
= 1.8V
= 1.8V
= 1 μF
204mA
124mA
1000