MIC49500 Datasheet, PDF (5/11 Pages) Micrel Semiconductor – 5A Dual Supply, Low Voltage, High Bandwidth LDO

Micrel, Inc.
Typical Characteristics
Ground Current
vs. Load Current
60
55
50
45
40
35
V_IN = V_OUT + 1V
30
V_OUT = 1.2V
V_EN = V_IN
25
V_BIAS = 3.3V
C_OUT = 10µF
200 _{0.5 1 1.5 2 2.5 3 3.5 4 4.5 5}
LOAD CURRENT (A)
Bias Current
vs. Output Current
80
70
60
50
40
30
20
V_IN = V_OUT + 1V
V_OUT = 1.8V
10
V_BIAS = 3.3V
C_OUT = C_BIAS = 10µF
0
012345
OUTPUT CURRENT (A)
Bias Current
vs. Temperature
60
50
1A
40
0
30
100µA
2.5A
5A
20
500mA
10
V_IN = 4V
V_OUT = 3V
C_OUT = 10µF
0
20 40 60 80
TEMPERATURE (°C)
V_BIAS Dropout Voltage
vs. Output Current
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
V_IN = V_OUT + 1V
V_OUT = 1.5V
0.2
V_BIAS = 3.3V
C_OUT = 10µF
00
1
2
3
4
5
OUTPUT CURRENT (A)
November 2005
Output Voltage
vs. Input Voltage
1.6 _50mA
1.4
2.5A
1.2
1.0
5A
0.8
0.6
0.4
V_OUT = 1.5V
0.2
V_BIAS = 3.3V
C_OUT = 10µF
00 _{1 2 3 4 5}
INPUT VOLTAGE (V)
Ground Current
vs. Temperature
60
50
2.5A
5A
1A
40
30 ^500mA
0 100µA
20
10
V_IN = V_OUT + 1V
V_OUT = 3V
C_OUT = 10µF
0
20 40 60 80
TEMPERATURE (°C)
Output Voltage
vs. Temperature
800
780
760
740
720
700
680
660
V_IN = V_OUT + 1V
V_OUT = 1.5V
640
V_BIAS = 3.3V
620
C_OUT = 10µF
I_OUT = 100µA
600
20 40 60 80
TEMPERATURE (°C)
Enable Threshold
2.5
2.0
Room
1.5
1.0
Hot
Cold
0.5
00 _{0.5 1 1.5 2 2.5 3}
ENABLE VOLTAGE (V)
5
MIC49500
Output Voltage
vs. Bias Voltage
1.6
50mA
1.4
2.5A
1.2
1.0
5A
0.8
0.6
0.4
V_IN = V_OUT + 1V
0.2
V_OUT = 1.5V
C_OUT = C_IN = 10µF
0
012345
BIAS VOLTAGE (V)
Output Voltage
vs. Temperature
1.70
1.65
1.60
1.55
1.50
1.45
1.40
1.35
1.30
V_IN = V_OUT = 1V
V_OUT = 1.5V
C_OUT = 10µF
20 40 60 80
TEMPERATURE (°C)
350
300
250
200
150
100
50
00
Dropout Voltage
vs. Output Current
V_IN = V_OUT + 1V
V_OUT = 1.5V
V_BIAS = 3.3V
C_OUT = 10µF
12345
OUTPUT CURRENT (I)
Current Limit
vs. Input Voltage
10
9
8
7
6
5
4
3
V_IN = 2.5V
2
V_OUT = 0V
1
V_BIAS = 3.3V
C_OUT = 10µF
20.5 3 3.5 4 4.5 5 5.5
INPUT VOLTAGE (V)
M9999-110805
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