MIC39300/39301
Micrel
Typical Characteristics
Power Supply
vs. Ripple Rejection
Power Supply
vs. Ripple Rejection
DROPOUT VOLTAGE (mV)
50
40
PSRR (dB)
50
40
PSRR (dB)
400
350
300
250
200
150
100
50
0
0
Dropout Voltage
vs. Output Current
30
V
OUT
= 2.5V
V
IN
= 3.3V
C
OUT
= 47µF
10
I
LOAD
= 3A
20
1x10
1
1x10
2
1x10
3
1x10
4
1x10
5
1x10
6
30
20 V
OUT
= 2.5V
V
IN
= 3.3V
C
OUT
= 100µF
10
I
LOAD
= 3A
1x10
1
1x10
2
1x10
3
1x10
4
1x10
5
1x10
6
0
0
1000
2000
3000
OUTPUT CURRENT (mA)
FREQUENCY (Hz)
FREQUENCY (Hz)
600
DROPOUT VOLTAGE (mV)
500
400
300
200
100
Dropout Voltage
vs. Temperature
OUTPUT VOLTAGE (V)
Dropout Characteristics
2.8
2.6
2.4
2.2
2.0
1.8
1.6
1.4
1.2
1.2
I
LOAD
= 3A
I
LOAD
= 1.5A
1.6 2.0 2.4 2.8 3.2
INPUT VOLTAGE (V)
3.6
GROUND CURRENT (mA)
50
40
30
20
10
0
0
Ground Current
vs. Output Current
I
LOAD
= 100mA
V
OUT
= 2.5V
I
LOAD
= 3A
V
OUT
= 2.5V
I
LOAD
= 3A
1000
2000
3000
OUTPUT CURRENT (mA)
0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
10
Ground Current
vs. Supply Voltage
GROUND CURRENT (mA)
100
90
80
70
60
50
40
30
20
10
0
Ground Current
vs. Supply Voltage
GROUND CURRENT (mA)
8
7
6
5
4
3
2
1
Ground Current
vs. Temperature
GROUND CURRENT (mA)
8
6
4
2
0
I
LOAD
= 100mA
I
LOAD
= 3000mA
I
LOAD
= 1500mA
I
LOAD
=
1000mA
I
LOAD
= 10mA
V
OUT
= 2.5V
I
LOAD
= 100mA
0
2
4
6
8
10
SUPPLY VOLTAGE (V)
12
0
2
4
6
8
10
SUPPLY VOLTAGE (V)
12
0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
20
15
10
5
V
OUT
= 2.5V
I
LOAD
= 1.5A
50
40
30
20
10
V
OUT
= 2.5V
I
LOAD
= 3A
SHORT CIRCUIT CURRENT (A)
25
GROUND CURRENT (mA)
Ground Current
vs. Temperature
GROUND CURRENT (mA)
60
Ground Current
vs. Temperature
6
5
4
3
2
1
Short Circuit vs.
Temperature
V
IN
= 3.5V
(typical 2.5V device)
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)
March 2000
5
MIC39300/39301
MICREL [ MICREL SEMICONDUCTOR ]
