MIC49150_06 Datasheet, PDF (4/13 Pages) Micrel Semiconductor – 1.5A Low Voltage LDO Regulator w/Dual Input Voltages

Micrel, Inc.
Typical Characteristics
Power Supply Rejection Ratio
(Input Suppl )
80
70
60
50
40 _{VBIAS = 3.3V}
30 V_IN = 1.8V
20 ^VOUT ^{= 1.0V}
10
I_OUT = 1.5A
C_OUT = 1µF ceramic
0
0.01 0.1 1 10 100
FREQUENCY (kHz)
1000
Dropout Voltage
(Bias Supply)
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
V_IN = 2.5V
0.2
V_OUT = 1.5V
0
OUTPUT CURRENT (mA)
Dropout Characteristics
(Input Voltage)
1.6
1.4 ^IOUT ^{= 10mA}
1.2
1.0
I = 1.5A
OUT
0.8
0.6
0.4 _{VBIAS = 5V}
0.2 _{VOUT = 1.5V}
00 _{0.5 1 1.5 2 2.5}
INPUT VOLTAGE (V)
Maximum Bias Current
vs. Bias Voltage
300
250
200
V_ADJ = 0V
I_OUT = 1.5A
150
V_IN = 2.5V
100
50
*Note: Maximum bias current is bias
current with input in dropout
0
3 3.5 4 4.5 5 5.5 6 6.5
BIAS VOLTAGE (V)
November 2006
Power Supply Rejection Ratio
(Bias Suppl )
80
70
60
50
40 _{VBIAS = 3.3V}
30 V_IN = 1.8V
20 ^VOUT ^{= 1.0V}
10
I_OUT = 1.5A
C_OUT = 1µF ceramic
0
0.01 0.1 1
10 100
FREQUENCY (kHz)
1000
Dropout Voltage
vs. Temperature
(Input Supply)
400
350
300
250
200
150
100
V_BIAS = 5V
I_OUT = 1.5A
50
V_OUT = 1. 5V
0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE( °C)
Dropout Characteristics
(Bias Voltage)
1.6
1.4
1.2
I = 10mA
OUT
1.0
0.8
I = 1.5A
OUT
0.6
0.4
0.2
00
V_IN = 2.5V
V_OUT = 1.5V
1 2 3 4 5 67
BIAS VOLTAGE (V)
Maximum Bias Current
vs. Temperature
300
250
200
V_BIAS = 5V
150
V_ADJ = 0V
100
V_IN = 2.5V
50
0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE( °C)
4
MIC49150
Dropout Voltage
(Input Suppl )
300
250
200
150
100
50
V_BIAS = 5V
V_OUT = 1.0V
0
OUTPUT CURRENT (mA)
Dropout Voltage
vs. Temperature
(Bias Supply)
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
V_IN = 2.5V
0.4
I_OUT = 1.5A
0.2
V_OUT = 1.5V
0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE( °C)
1.505
1.504
1.503
1.502
1.501
1.500
1.499
1.498
1.497
1.496
1.495
Load Regulation
V_BIAS = 5V
V_IN = 2.5V
OUTPUT CURRENT (mA)
Bias Current
vs. Temperature
45
40
35
V_IN = 2.5V
V_OUT = 1.5V
V_BIAS = 5V
30 _{I = 750mA}
OUT
25
20
I = 100mA
15 ^OUT
I = 1500mA
OUT
10
5
I = 10mA
OUT
0-40 _{-20 0 20 40 60 80 100 120}
TEMPERATURE (°C)
M9999-111306