參數(shù)資料
型號(hào): ADP125ARHZ
廠商: ANALOG DEVICES INC
元件分類: 可調(diào)正電壓?jiǎn)温份敵鯨DO穩(wěn)壓器
英文描述: 5.5V INPUT, 500 MA, LOW QUIESCENT CURRENT, CMOS LINEAR REGULATOR W/EXTERNAL VOLTAGE DIVIDER No of Pins: 8 Temperature Range: Ind
中文描述: 0.8 V-5 V ADJUSTABLE POSITIVE LDO REGULATOR, 0.23 V DROPOUT, PDSO8
封裝: ROHS COMPLIANT, MO-187AAT, MSOP-8
文件頁(yè)數(shù): 20/20頁(yè)
文件大小: 648K
代理商: ADP125ARHZ
ADP124/ADP125
Rev. A | Page 9 of 20
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
10
100
1k
10k
100k
1M
10M
FREQUENCY (Hz)
P
S
RR
(
d
B)
IOUT = 100A
VIN = VOUT + 1V
VRIPPLE = 50mV
CIN = COUT = 1F
IOUT = 1mA
IOUT = 10mA
IOUT = 100mA
IOUT = 300mA
IOUT = 500mA
08476-
017
Figure 19. Power Supply Rejection Ratio vs. Frequency, VOUT= 4.2 V, VIN = 5.2 V
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
10
100
1k
10k
100k
1M
10M
FREQUENCY (Hz)
P
S
RR
(
d
B)
VOUT = 2.8V, IOUT = 10mA
VIN = VOUT + 1V
VRIPPLE = 50mV
CIN = COUT = 1F
VOUT = 3.3V, IOUT = 10mA
VOUT = 4.2V, IOUT = 10mA
VOUT = 2.8V, IOUT = 500mA
VOUT = 3.3V, IOUT = 500mA
VOUT = 4.2V, IOUT = 500mA
08476-
018
Figure 20. 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
P
S
RR
(
d
B)
FREQUENCY (Hz)
VIN = 3.1V, IOUT = 10mA
VIN = 3.3V, IOUT = 10mA
VIN = 3.8V, IOUT = 10mA
VIN = 4.8V, IOUT = 10mA
VIN = 3.1V, IOUT = 500mA
VIN = 3.3V, IOUT = 500mA
VIN = 3.8V, IOUT = 500mA
VIN = 4.8V, IOUT = 500mA
08476-
019
Figure 21. 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)
N
O
ISE
(
v
/√
H
z
)
08476-
020
VOUT = 2.8V
VOUT = 3.3V
VOUT = 4.2V
Figure 22. Output Noise Spectrum, VIN = 5 V
20
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70
0.001
0.01
0.1
1
10
100
1k
ILOAD (mA)
R
MS
N
O
ISE
(
V)
VOUT = 2.8V
VOUT = 3.3V
VOUT = 4.2V
08476-
021
Figure 23. Output Noise vs. Load Current and Output Voltage, VIN = 5 V
08476-
022
M40.0s A CH1
200mA
1
2
T
9.800%
VIN = 4V
VOUT = 3.3V
VOUT
1mA TO 500mA LOAD STEP
CH1 500mA
B
W
CH2 50.0mV
B
W
IOUT
Figure 24. Load Transient Response, COUT = 1 μF
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