MIC59300 Datasheet, PDF (6/15 Pages) Micrel Semiconductor – Ultra High Speed 3A LDO

Micrel, Inc.
Typical Characteristics
Power Supply
Rejection Ratio (V )
90
IN
80
70
60
50
40
30 ^VBIAS ^{= 3.3V}
20 ^{VIN = 1.8V}
10
V_OUT = 1V
I_OUT = 1.5A
00.01 0.1 1
10 100
FREQUENCY (kHz)
1000
Dropout Voltage
(V )
1.2
BIAS
1
0.8
0.6
0.4
0.2
V = 3V
IN
V = 2.5V
OUT
0
OUTPUT CURRENT (A)
Dropout Characteristics
(V )
3
BIAS
10mA
2.5
3A
2
1.5
1
0.5
V = 3V
IN
V = 2.5V
OUT
00 _{1 2 3 4 5}
BIAS VOLTAGE (V)
Bias Current
vs. Output Current
35
30
25
20
15
10
V = 3V
BIAS
5
V = 1.5V
IN
V = 0.5V
OUT
0
OUTPUT CURRENT (A)
January 2009
MIC59300
Power Supply
Rejection Ratio (V )
90
BIAS
80
70
60
50
40
30 ^VBIAS ^{= 3.3V}
20 ^{VIN = 1.8V}
10
V_OUT = 1V
I_OUT = 1.5A
00.01 0.1 1
10 100
FREQUENCY (kHz)
1000
Dropout Voltage vs.
Temperature (V )
350
IN
300
250
200
150
100
50
0
V = 5.5V
BIAS
V = 3.45V
OUT
I = 3A
OUT
1.010
1.009
1.008
1.007
1.006
1.005
1.004
1.003
1.002
1.001
1.000
0.999
0.998
0.997
0.996
0.995
1.5
TEMPERATURE (°C)
Load Regulation
V = 3.3V
BIAS
V = 1.5V
IN
V = 1V
OUT
OUTPUT CURRENT (A)
Ground Current
vs. Bias Voltage
1.4
1.3
1.2
1.1
1
V = 1.8V
IN
V = 1V
OUT
0.93 _{3.5 4 4.5 5 5.5}
BIAS VOLTAGE (V)
220
200
180
160
140
120
100
80
60
40
20
10.5
Dropout Voltage
(V )
IN
V = 3.3V
BIAS
V = 1V
OUT
1.8 2.1 2.4 2.7 3
OUTPUT CURRENT (A)
Dropout Voltage vs.
Temperature (V )
1.2
BIAS
1
0.8
0.6
0.4
V = 3.8V
IN
0.2
V = 3.45V
OUT
I = 3A
OUT
0
TEMPERATURE (°C)
Bias Current
vs. Temperature
70
V = 3V
BIAS
60
V = 1.5V
I =3.0A
OUT
IN
V = 0.5V
50
OUT
40
30
20
10
I =100mA
OUT
I =1.5A
OUT
0
TEMPERATURE (°C)
0.504
Feedback Voltage
vs. Input Voltage
0.503
0.502
0.501
0.500
0.499
0.498
0.497
0.4916.5
V = 3.3V
BIAS
V = 1V
OUT
1.9 2.3 2.7 3.1 3.5 3.9
INPUT VOLTAGE (V)
6
M9999-010809-A