MIC37139
Micrel
Typical Characteristics
Power Supply
Rejection Ratio
80
V
IN
= 3.3V
V
OUT
= 2.5V
PSRR (dB)
Power Supply
Rejection Ratio
80
DROPOUT VOLTAGE (mV)
Dropout Voltage vs.
Output Current
350
300
250
200
150
100
50
0
0
400
800
1200
1600
OUTPUT CURRENT (mA)
2.5V
OUT
V
IN
= 3.3V
V
OUT
= 2.5V
60
PSRR (dB)
60
40
I
OUT
= 1.5A
C
OUT
= 10µF
C
IN
= 0
40
I
OUT
= 1.5A
C
OUT
= 47µF
C
IN
= 0
20
20
0
1E-2 1E-1 1E+0 1E+1 1E+2 1E+3
1
10
1k
0.01 0.1
100
FREQUENCY (Hz)
0
1E-2 1E-1 1E+0 1E+1 1E+2 1E+3
1
10
1k
0.01 0.1
100
FREQUENCY (Hz)
500
DROPOUT VOLTAGE (mV)
450
400
350
300
250
200
150
100
50
Dropout Voltage vs.
Temperature
3.0
OUTPUT VOLTAGE (V)
Dropout Characteristics
18
GROUND CURRENT (mA)
Ground Current
vs. Output Current
16
14
12
10
8
6
4
2
0
0
1000
1200
1400
1600
200
400
600
800
2.5V
OUT
2.5
2.0
1.5
1.0
0.5
0
1
1.5
2
2.5
3
INPUT VOLTAGE (V)
3.5
750mA
100mA
1.5A
2.5V
OUT
1.5V
OUT
0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
OUTPUT CURRENT (mA)
Ground Current
vs. Supply Voltage
1.4
45
GROUND CURRENT (mA)
Ground Current
vs. Supply Voltage
GROUND CURRENT (mA)
40
35
30
25
20
15
10
5
0
0
750mA
1
2
3
4
5
6
SUPPLY VOLTAGE (V)
1500mA
1000mA
V
OUT
= 2.5V
0.5
0.445
0.44
0.435
0.43
0.4
0.42
0.415
0.41
Ground Current
vs. Temperature
V
OUT
= 2.5V
I
LOAD
= 10mA
GROUND CURRENT (mA)
1.2
1
0.8
0.6
0.4
0.2
0
0
V
OUT
= 2.5V
100mA
10mA
1
2
3
4
5
SUPPLY VOLTAGE (V)
6
0.405
0.4
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
Ground Current
vs. Temperature
7
Ground Current
vs. Temperature
GROUND CURRENT (mA)
V
OUT
=2.5V
I
LOAD
= 1.5A
GROUND CURRENT (mA)
6
5.0
4
3
2
1
V
OUT
= 2.5V
I
= 750mA
LOAD
SHORT CIRCUIT CURRENT (mA)
20
18
16
14
12
10
8
6
3.0
2.5
2.0
1.5
1.0
0.5
Short Circuit Current
vs. Temperature
0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
4
2
0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
M9999-112003
4
November 2003
MICREL [ MICREL SEMICONDUCTOR ]
