MIC39150/39151
Micrel
Typical Characteristics
Power Supply
Rejection Ratio
V
IN
= 3.3V
V
OUT
= 2.5V
PSRR (dB)
60
50
PSRR (dB)
40
30
20
50
40
30
20
10
Power Supply
Rejection Ratio
500
Dropout Voltage
vs. Output Current
DROPOUT VOLTAGE (mV)
V
IN
= 3.3V
V
OUT
= 2.5V
400
300
200
100
0
V
OUT
= 1.8V
I
LOAD
= 1.5A
10 C
OUT
= 10µF
C
IN
= 0
0
1E+1 1E+2 1E+3 1E+4 1E+5 1E+6
1k
10k 100k 1M
10
100
FREQUENCY (Hz)
0
1E+1 1E+2 1E+3 1E+4 1E+5 1E+6
1k
10k 100k 1M
10
100
FREQUENCY (Hz)
I
LOAD
= 1.5A
C
OUT
= 47µF
C
IN
= 0
V
OUT
= 2.5V
0
500
1000
1500
OUTPUT CURRENT (mA)
600
DROPOUT VOLTAGE (mV)
500
400
300
200
100
Dropout Voltage
vs. Temperature
2.8
Dropout Characteristics
25
I
LOAD
= 100mA
Ground Current
vs. Output Current
GROUND CURRENT (mA)
OUTPUT VOLTAGE (V)
2.6
2.4
2.2
2.0
1.8
1.6
1.4
1.2
I
LOAD
= 1.5A
I
LOAD
= 750mA
20
15
10
5
V
OUT
= 2.5V
0
0
250 500 750 1000 1250 1500
OUTPUT CURRENT (mA)
V
OUT
= 1.8V
V
OUT
= 1.8V
V
OUT
= 2.5V
I
LOAD
= 1.5A
0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
1.4
1.6
1.8
2
2.2
2.4
2.6
2.8
3
3.2
3.4
3.6
INPUT VOLTAGE (V)
Ground Current
vs. Supply Voltage
1.8
Ground Current
vs. Supply Voltage
65
60
55
50
45
40
35
30
25
20
15
10
5
0
0.36
GROUND CURRENT (mA)
0.35
0.34
0.33
Ground Current
vs. Temperature
GROUND CURRENT (mA)
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0
I
LOAD
= 10mA
2
4
6
8
10
SUPPLY VOLTAGE (V)
12
I
LOAD
= 100mA
GROUND CURRENT (mA)
1.6
I
LOAD
= 1500mA
I
LOAD
= 1000mA
I
LOAD
= 750mA
V
OUT
= 1.8V
0.32 V
= 2.5V
OUT
0.31
I
LOAD
= 10mA
0
2
4
6
8
10
SUPPLY VOLTAGE (V)
12
0.30
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
SHORT CIRCUIT CURRENT (A)
8
GROUND CURRENT (mA)
7
6
5
4
3
2
1
Ground Current
vs. Temperature
GROUND CURRENT (mA)
25
20
15
Ground Current
vs. Temperature
V
OUT
= 2.5V
3.5
3.0
2.5
2.0
1.5
1.0
0.5
Short Circuit vs.
Temperature
typical 2.5V device
V
OUT
= 2.5V
V
OUT
= 1.8V
typical 1.8V device
V
OUT
= 1.8V
10
5
I
LOAD
= 1.5A
I
LOAD
= 750mA
0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
May 2000
5
MIC39150/39151
MICREL [ MICREL SEMICONDUCTOR ]
