MIC39500_05 Datasheet, PDF (4/10 Pages) Micrel Semiconductor – 5A μCap Low-Voltage Low-Dropout Regulator

MIC39500/39501
Typical Characteristics
Power S upply
R ejection R atio
35
V_IN = 3.3V
30
V_OUT = 2.5V
25
I_LOAD = 5A
20
15
10
5 ^C _IN ^{= 0}
0 ^{C OUT = 47µF T ant}
1E1+01 _{110E+02 11kE+310k1E+1400k1E+15M} 11E0+M6
FREQUENCY (Hz)
Dropout V oltage
vs . Temperature
600
500
V_OUT = 1.8V
400
V_OUT = 2.5V
300
200
100
0
I_LOAD = 5A
TEMPERATURE (°C)
Ground Current vs.
S upply V oltage
12.0
10.0
8.0
I_LOAD = 10mA
6.0
4.0
I_LOAD = 100mA
2.0
0.0
0 1 2 3 4 5 6 7 8 9 10
SUPPLY VOLTAGE (V)
Ground Current
vs . T emperature
30
25 ^{V OUT = 2.5V}
20
V_OUT = 1.8V
15
10
5 I_LOAD = 2.5A
V_IN = V_OUT + 1V
-040 -20 0 20 40 60 80 100 120 140
TEMPERATURE (°C)
M9999-082605-B
Power S upply
R ejection R atio
35
30
25 ^{V IN = 3.3V}
V_OUT = 2.5V
20 I_LOAD = 5A
15
10
5 ^C IN ^{= 0}
C _OUT = 100µF C eramic
0
1E1+01 _{110E+02 11kE+310k1E+1400k1E+15M} 11E0+M6
FREQUENCY (Hz)
Dropout C harac teris tic s
2.8
2.6
2.4 ^{ILOAD = 2.5A}
2.2
I_LOAD = 100mA
I_LOAD = 5A
2
1.8
1.6
1.4
INPUT VOLTAGE (V)
Ground Current vs.
S upply V oltage
180
160
140
120
100
80
I_LOAD = 5.0A
60
40
I_LOAD = 2.5A
20
I_LOAD = 2.0A
00
2
4
6
8 10
SUPPLY VOLTAGE (V)
Ground Current
vs . T emperature
80.0
70.0 ^{V OUT = 2.5V}
60.0
50.0 V _OUT = 1.8V
40.0
30.0
20.0
10.0 ^ILOAD ^{= 5A}
0 ^{VIN = VOUT = 1V}
-40 -20 0 20 40 60 80 100 120 140
TEMPERATURE (°C)
4
Micrel
Dropout V oltage vs .
Output C urrent
450
400
V_OUT = 1.8V
350
300
250
200
V_OUT = 2.5V
150
100
50
0
OUTPUT CURRENT (mA)
Ground Current vs.
Output C urrent
80
70 ^{V IN = V OUT +1V}
60
50
V_OUT = 2.5V
40
30
20
V_OUT = 1.8V
10
0
OUTPUT CURRENT (mA)
Ground Current
vs . Temperature
10
9
8
7
V_OUT = 2.5V
6
5
4 ^{VOUT = 1.8V}
3
2 _{ILOAD = 10mA}
1 _{VIN = VOUT + 1V}
-040 -20 0 20 40 60 80 100 120 140
TEMPERATURE (°C)
S hort C ircuit C urrent
vs . T emperature
10.0
9.0 T ypical 2.5V Device
8.0
7.0
6.0 T ypical 1.8V Device
5.0
4.0
3.0
2.0
1.0
0
V_IN = V_OUT + 1V
-40 -20 0 20 40 60 80 100 120 140
TEMPERATURE (°C)
August 2005