MIC39500/39501
Micrel
Typical Characteristics
Dropout Voltage vs .
Output C urrent
P ower S upply
P ower S upply
R ejection R atio
R ejection R atio
450
400
350
300
250
200
150
100
50
35
35
30
25
20
15
10
5
VOUT = 1.8V
VIN = 3.3V
VOUT = 2.5V
ILOAD = 5A
30
25
20
15
10
5
VIN = 3.3V
VOUT = 2.5V
ILOAD = 5A
VOUT = 2.5V
C IN = 0
C IN = 0
C OUT = 100µF C eramic
C OUT = 47µF Tant
0
0
0
1E+1 1E+2 1E+3 1E+4 1E+5 1E+6
1E+1 1E+2 1E+3 1E+4 1E+5 1E+6
1k 10k
1M
1k 10k
1M
10M
100k
10 100
100k
10M
10 100
FREQUENCY (Hz)
FREQUENCY (Hz)
OUTPUT CURRENT (mA)
Dropout Voltage
vs . Temperature
Dropout C haracteris tics
G round C urrent vs .
Output C urrent
80
70
60
50
40
30
20
10
0
600
500
400
300
200
100
0
2.8
2.6
2.4
2.2
2
VIN = VOUT +1V
VOUT = 1.8V
ILOAD = 100mA
ILOAD = 2.5A
VOUT = 2.5V
ILOAD = 5A
VOUT = 2.5V
1.8
1.6
1.4
VOUT = 1.8V
ILOAD = 5A
INPUT VOLTAGE (V)
OUTPUT CURRENT (mA)
TEMPERATURE (°C)
G round C urrent vs .
S upply Voltage
G round C urrent
vs . Temperature
G round C urrent vs .
S upply Voltage
12.0
10.0
8.0
180
160
140
120
100
80
10
9
8
7
6
5
4
3
2
1
0
VOUT = 2.5V
ILOAD = 10mA
6.0
VOUT = 1.8V
ILOAD = 100mA
ILOAD = 5.0A
4.0
60
2.0
ILOAD = 2.5A
ILOAD = 2.0A
40
ILOAD = 10mA
VIN = VOUT + 1V
20
0.0
0
1 2 3 4 5 6 7 8 9 10
SUPPLY VOLTAGE (V)
0
0
2
4
6
8
10
-40 -20 0 20 40 60 80 100 120140
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
G round C urrent
vs . Temperature
S hort C ircuit C urrent
vs . Temperature
G round C urrent
vs . Temperature
80.0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
10.0
30
25
20
15
10
5
VOUT = 2.5V
9.0 Typical 2.5V Device
VOUT = 2.5V
8.0
7.0
VOUT = 1.8V
6.0 Typical 1.8V Device
VOUT = 1.8V
5.0
4.0
3.0
2.0
ILOAD = 5A
VIN = VOUT = 1V
ILOAD = 2.5A
VIN = VOUT + 1V
1.0
VIN = VOUT + 1V
0
0
0
-40 -20
0
20 40 60 80 100 120140
-40 -20
0 20 40 60 80 100 120140
TEMPERATURE (°C)
-40 -20
0
20 40 60 80 100 120 140
TEMPERATURE (°C)
TEMPERATURE (°C)
M9999-082605-B
4
August 2005
MICREL [ MICREL SEMICONDUCTOR ]
