MIC49200 Datasheet, PDF (6/12 Pages) Micrel Semiconductor – 2A LOW VOLTAGE LDO WITH DUAL INPUT VOLTAGES

Micrel, Inc.
Typical Characteristics
Power Supply Rejection Ratio
(Input Supply)
120
100
2A
80
100mA
60
40
V_IN = V_OUT + 1V
20
V_OUT = 1.5V
V_BIAS = 4V
C_OUT = 1µF
00.01 0.1 1 10 100
FREQUENCY (kHz)
1,000
Dropout Voltage
(Bias Supply)
1.8
1.6
1.4
1.2
1
0.8
0.6
0.4
V_IN = V_OUT + 1V
V_OUT = 1.5V
0.2
V_BIAS = 5V
C_OUT = 1µF
0
1200 1600 2000
OUTPUT CURRENT (mA)
Dropout Characteristics
(Input Supply)
1.6
1.4 ^10mA
1.2
2A
1.0
0.8
0.6
0.4
V_BIAS = 5V
0.2
V_OUT = 1.5V
C_OUT = 1µF
0
0123456
INPUT VOLTAGE (V)
Output Voltage
vs. Temperature
1.80
1.75
1.70
1.65
1.60
1.55
1.50
1.45
1.40
1.35
1.30
1.25
1.20
V_IN = V_OUT + 1V
V_OUT = 1.5V
V_BIAS = 5V
TEMPERATURE (°C)
January 2006
MIC49200
Power Supply Rejection Ratio
(Bias Supply)
80
60
2A
40
V_IN = V_OUT + 1V
20 ^{VOUT = 1.5V}
V_BIAS = 4V
C_OUT = 1µF
I_OUT = 2A
00.01 0.1 1 10 100
FREQUENCY (kHz)
1,000
Dropout Voltage
vs. Temperature
(Input Supply)
550
500
450 ^{IOUT = 2A}
400
350
300
250
200 ^{IOUT = 1A}
V_IN = V_OUT +1V
V_OUT = 1.5V
V_BIAS = 5V
C_OUT = 1µF
150
100
I_OUT = 100mA
50
0
TEMPERATURE (°C)
Dropout Characteristics
(Bias Supply)
1.6
1.4
10mA
2A
1.2
1.0
0.8
0.6
0.4
V_IN = V_OUT + 1V
0.2
V_OUT = 1.5V
C_OUT = 1µF
0
0123456
BIAS VOLTAGE (V)
Maximum Bias Current
vs. Bias Voltage
300
250
200
150
100
50
03
V_IN = V_OUT + 1V
V_OUT = 1.5V
I_OUT = 2A
C_OUT = 1µF
V_ADJ = 0V
3.5 4.0 4.5 5.0 5.5 6.0 6.5
BIAS VOLTAGE (V)
6
Dropout Voltage
(Input Supply)
450
400
350
300
250
200
150
100
V_IN = V_OUT + 1V
V_OUT = 1.5V
50
V_BIAS = 5V
C_OUT = 1µF
0
1200 1600 2000
OUTPUT CURRENT (mA)
Dropout Voltage
vs. Temperature
(Bias Supply)
2.0
1.8
1.6
1.4 _{IOUT = 2A}
1.2
1.0
I_OUT = 1A
0.8
I_OUT = 100mA
0.6 _{VIN = VOUT +1V}
0.4 V_OUT = 1.5V
0.2
0
V_BIAS = 5V
C_OUT = 1µF
TEMPERATURE (°C)
Load Regulation
1.52
1.51
1.50
1.49
1.48
1.47
1.46
V_IN = V_OUT + 1V
V_OUT = 1.5V
V_BIAS = 5V
C_OUT = 1µF
OUTPUT CURRENT (A)
Maximum Bias Current
vs. Temperature
300
250
I_BIAS
200
150
100
V_IN = V_OUT +1V
V_OUT = 1.5V
50
V_BIAS = 5V
C_OUT = 1µF
V_ADJ = 0V
0
TEMPERATURE (°C)
M9999-011306
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