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Low-Dropout, 120mA Linear Regulators
____________________________Typical Operating Characteristics (continued)
(VIN = +3.6V, CIN = 1µF, COUT = 1µF, MAX886_T, TA = +25°C, unless otherwise noted.)
SUPPLY CURRENT
vs. INPUT VOLTAGE
90
80
ILOAD = 50mA
70
ILOAD = 0mA
60
50
40
30
20
10
0
0
1
2
3
4
5
6
INPUT VOLTAGE (V)
OUTPUT VOLTAGE
vs. TEMPERATURE
3.30
ILOAD = 50mA
3.25
3.20
3.15
3.10
3.05
3.00
-40 -20
0 20 40 60
TEMPERATURE (°C)
80 100
SUPPLY CURRENT
vs. TEMPERATURE
100
90 ILOAD = 50mA
80
70
60
50
40
30
20
10
0
-40 -20
0 20 40 60
TEMPERATURE (°C)
80 100
DROPOUT VOLTAGE
vs. LOAD CURRENT
140
TA = +85°C
120
100
TA = +25°C
80
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
70
VOUT = 3.15V
60
RL = 100W
50
COUT = 10µF
40
OUTPUT SPECTRAL NOISE DENSITY
vs. FREQUENCY
10
RL = 50Ω
COUT = 1µF
1
60
30
40
TA = -40°C
20
COUT = 1µF
COUT = 100µF
0.10
20
10
0
0 10 20 30 40 50 60 70 80 90 100
LOAD CURRENT (mA)
0
0.01 0.1
1
10 100 1000
FREQUENCY (kHz)
0.01
0.1
1
10
100
1000
FREQUENCY (kHz)
REGION OF STABLE COUT ESR
vs. LOAD CURRENT
1000
COUT = 1µF
OUTPUT NOISE DC TO 1MHz
100
INTERNAL FEEDBACK
10
1
EXTERNAL FEEDBACK
VOUT
STABLE REGION
0.1
0.01
0 10 20 30 40 50 60 70 80 90 100
LOAD CURRENT (mA)
1ms/div
ILOAD = 50mA, VOUT IS AC COUPLED
4 _______________________________________________________________________________________
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