Low-Dropout, 300mA Linear Regulators in SOT23
Typical Operating Characteristics (continued)
(Typical Operating Circuit, T = +25°C, unless otherwise noted.)
A
DROPOUT VOLTAGE vs. OUTPUT VOLTAGE
DROPOUT VOLTAGE vs. LOAD CURRENT
GROUND-PIN CURRENT vs. INPUT VOLTAGE
300
250
200
150
100
50
160
140
120
100
80
150
I
= 200mA
OUT
125
100
75
50
25
0
T
= +25°C
A
MAXIMUM
TYPICAL
T
= +85°C
A
I
= 300mA
LOAD
60
I
= 0
LOAD
T
A
= -40°C
40
20
0
0
2.5
2.7
2.9
3.1
3.3
0
50
100
150
200
250
300
0
1.0
2.0
3.0
4.0
5.0
A
V
(V)
OUT
LOAD CURRENT (mA)
INPUT VOLTAGE (V)
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
GROUND-PIN CURRENT vs. LOAD CURRENT
GROUND-PIN CURRENT vs. TEMPERATURE
70
100
80
60
40
20
0
70
60
I
= 0
OUT
68
66
64
62
60
58
56
54
52
50
V
= 5.5V
= 3.8V
IN
V
= V + 500mV
OUT
IN
C
C
= 2.2µF
= 0.01µF
OUT
BP
50
40
V
IN
30
20
V
LOAD
= 3.30V
= 30mA
OUT
10
0
I
MAX8887 ONLY
100 1000
0
50
100
150
200
250
300
-40
-15
10
35
60
85
0.01 0.1
1
10
LOAD CURRENT (mA)
TEMPERATURE (°C)
FREQUENCY (kHz)
MAX8887
OUTPUT NOISE DC TO 1MHz
LOAD-TRANSIENT RESPONSE
MAX8887/8 toc10
MAX8887/8 toc11
300mA
10mA
I
OUT
OUT
V
OUT
50µV/div
50mV/div
V
AC-COUPLED
V
= 3.3V
= 3.8V
OUT
V
IN
V
= 1.8V, V = 3.8V, I
= 15mA
OUT
IN
LOAD
40ms/div
10µs/div
4
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