MIC49300_05 Datasheet, PDF (5/8 Pages) Micrel Semiconductor – 3.0A Low Voltage LDO Regulator w/Dual Input Voltages

MIC49300
Typical Characteristics
V_IN Dropout
300 ^{vs. Output Current}
250
200
150
100
50
0
0 0.5 1 1.5 2 2.5 3
OUTPUT CURRENT (A)
Dropout Characteristics
2.0
1.8
1.6 100mA
1.4
3A
1.2
1.0
0.8
0.6
0.4
0.2
V_BIAS = 5V
00 _{0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0}
SUPPLY VOLTAGE (V)
Bias Current
vs. Output Current
35
30
25
20
15
10
5
V_BIAS = 5V
V_IN = 2.5V
0
0 0.5 1.0 1.5 2.0 2.5 3.0
OUTPUT CURRENT (A)
1.834
Output Voltage
vs. Temperature
1.824
1.814
1.804
1.794
1.784
1.774
1.764
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
August 2005
V_BIAS Dropout
1.7 ^{vs. Output Current}
1.6
1.5
1.4
1.3
1.2
1.1
1
0 0.5 1.0 1.5 2.0 2.5 3.0
OUTPUT CURRENT (A)
Bias Current
vs. Input Supply
25
I_OUT = 100mA
20
I_OUT = 0mA
15
10
5
V_OUT = 1.8V
V_BIAS = 5V
00 _{0.5 1 1.5 2 2.5 3 3.5 4}
INPUT SUPPLY (V)
Bias Current
vs. Temperature
35
I = 500mA
30
O UT
25
I = 100mA
O UT
20
15 _{I = 100µA}
O UT
10
5
0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
Short Circuit
vs. Temperature
9
8
7
6
5
4
3
2
1
0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
5
Micrel, Inc.
Dropout vs.
Temperature (Input Supply)
400
350
300
250
200
150
100
50
0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
Bias Current
vs. Supply Voltage
1000
900
I_OUT = 2A
800
700
600
500
I_OUT = 3A
400
300
I_OUT = 1A
200
100
00 _{0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0}
SUPPLY VOLTAGE (V)
Bias Current
vs. Temperature
60
50
I_OUT = 3A
40
I_OUT = 2A
30
20
10
I_OUT = 1A
-040 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
M9999-082605-B