MIC5239
Micrel
Typical Characteristics (V
O
= 3V)
Power Supply
Rejection Ratio
60
50
DROPOUT VOLTAGE (mV)
DROPOUT VOLTAGE (mV)
I
LOAD
= 500mA
450
400
350
300
250
200
150
100
50
0
0
Dropout Voltage
vs. Output Current
600
500
400
300
200
100
Dropout Voltage
vs. Temperature
I
OUT
= 500mA
PSRR (dB)
40
30
20
10
0
0.01
0.1
1
10
100
FREQUENCY (Hz)
1000
100 200 300 400 500
OUTPUT CURRENT (mA)
0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
Dropout
Characteristics
3.5
9000
I
LOAD
= 100µA
GROUND CURRENT (µA)
Ground Pin Current
vs. Output Current
GROUND CURRENT (µA)
8000
7000
6000
5000
4000
3000
2000
1000
0
0
100 200 300 400 500
OUTPUT CURRENT (mA)
V
IN
= 4V
30
28
26
24
22
20
18
16
14
12
10
0
Ground Pin Current
vs. Output Current
V
IN
= 30V
V
IN
= 24V
OUTPUT VOLTAGE (V)
3
2.5 I
LOAD
= 250mA
2
1.5
1
0.5
0
0 0.5 1 1.5 2 2.5 3 3.5 4
INPUT VOLTAGE (V)
I
LOAD
= 500mA
V
IN
= 4V
V
IN
= 12V
100 200 300 400 500
OUTPUT CURRENT (µA)
80
Ground Pin Current
vs. Temperature
GROUND CURRENT (mA)
3
2.9
2.8
2.7
2.6
2.5
2.4
2.3
2.2
2.1
2
Ground Pin Current
vs. Temperature
GROUND CURRENT (mA)
I
LOAD
= 250mA
10.5
10
9.5
9
8.5
8
Ground Pin Current
vs. Temperature
I
LOAD
= 500mA
GROUND CURRENT (µA)
75
70
65
60
55
I
LOAD
= 10mA
50
-40 -20 0
20 40 60 80 100 120
-40 -20 0
20 40 60 80 100 120
TEMPERATURE (°C)
TEMPERATURE (°C)
7.5
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
Ground Pin Current
vs. Input Voltage
GROUND CURRENT (mA)
GROUND CURRENT (µA)
Ground Pin Current
vs. Input Voltage
14.4
12.4
10.4
8.4
6.4
4.4
2.4
0.4
1.5
2
2.5
3
3.5
INPUT VOLTAGE (V)
4
I
OUT
= 250mA
I
OUT
=500mA
GROUND CURRENT (µA)
40
35
30
25
20
15
10
4
Ground Pin Current
vs. Input Voltage
100
90
80
70
I
OUT
= 10mA
I
OUT
= 1mA
I
OUT
= 100µA
60
50 I
OUT
= 1mA
40
30
20
10
0
1.5
I
OUT
= 100µA
I
OUT
= 10µA
9
14
19
24
INPUT VOLTAGE (V)
29
I
OUT
= 10µA
2
2.5
3
3.5
INPUT VOLTAGE (V)
4
January 2002
5
MIC5239
MICREL [ MICREL SEMICONDUCTOR ]
