Micrel, Inc.
MIC2810
Typical Characteristics
―
LDO1/LDO2
80
70
60
50
40
30
20
10
0
0.01
0.1
1
10
100
FREQUENCY (kHz)
1000
Power Supply Rejection Ratio
LDO1[LOWQ Mode]
V
IN
= 3.6V
V
OUT
= 1.2V
C
OUT
= 2.2µF
I
OUT
= 25mA
/LowQ = GND
70
60
50
40
30
20
10
Power Supply Rejection Ratio
LDO1[Normal Mode]
V
IN
= 3.6V
V
OUT
= 1.2V
C
OUT
= 2.2µF
I
OUT
= 100mA
/LowQ = V
IN
LDO1 Line Regulation
2.0
1.9
1.8
C
OUT
= 2.2µF
V
IN
= 3.6V
I
OUT
= 150mA
/LowQ = V
IN
1.7
0
0.01
0.1
1
10
100
FREQUENCY (kHz)
1000
1.6
2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
INPUT VOLTAGE (V)
90
80
70
60
50
40
30
20
10
Power Supply Rejection Ratio
LDO2[LOWQ Mode]
V
IN
= 3.6V
V
OUT
= 2.8V
C
OUT
= 2.2µF
I
OUT
= 25mA
/LowQ = GND
80
70
60
50
40
30
20
10
Power Supply Rejection Ratio
LDO2[Normal Mode]
V
IN
= 3.6V
V
OUT
= 2.8V
C
OUT
= 2.2µF
I
OUT
= 100mA
/LowQ = V
IN
LDO2 Load Regulation
2.85
2.80
2.75
C
OUT
= 2.2µF
V
IN
= 3.6V
/LowQ = V
IN
50 100 150 200 250 300
OUTPUT CURRENT (mA)
0
0.01
0.1
1
10
100
FREQUENCY (kHz)
1000
0
0.01
0.1
1
10
100
FREQUENCY (kHz)
1000
2.70
0
80
75
70
65
60
55
0
LDO2 Ground Current
vs. Output Current
80
70
60
50
LDO2 Ground Current
vs. Temperature
140
120
100
80
60
40
LDO2 Dropout Voltage
vs. Output Current
V
IN
= 3.6V
V
OUT
= 2.8V
/LowQ = V
IN
50 100 150 200 250 300
OUTPUT CURRENT (mA)
40
30
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
V
IN
= 3.6V
I
OUT
= 200mA
/LowQ = V
IN
20
0
0
V
OUT
= 2.8V
/LowQ = V
IN
50 100 150 200 250 300
OUTPUT CURRENT (mA)
110
100
90
LDO2 Dropout Voltage
vs. Temperature
10
LDO2 Output Noise
Spectral Density
1
0.1
80
70
V
OUT
= 2.8V
I
OUT
= 200mA
/LowQ = V
IN
0.01 V
IN
= 4.2V
V
OUT
= 2.8V
C
OUT
= 2.2µF
/LowQ = V
IN
0.001
0.01 0.1
1
10 100 1,000 10,000
FREQUENCY (kHz)
60
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
April 2007
9
M9999-041107-B
MICREL [ MICREL SEMICONDUCTOR ]
