MIC2811_08 Datasheet, PDF (7/17 Pages) Micrel Semiconductor – Digital Power Management IC 2MHz, 600mA DC/DC with Triple 300mA LDOs

Micrel, Inc.
Typical Characteristics (LDO)
MIC2811 LDO1 PSRR
90
80
10mA
70
60
50
40
150mA
30 ^300mA
20
10
10E10+1 11E0+02 1E1k+3 11E0+k4 1E00+k5 11EM+6
FREQUENCY (Hz)
MIC2811 LDO1 Output Noise
Spectral Density
10
1
0.1 VIN = 4V
C_OUT = 2.2µF
0.01 ^{CBYP = 0.1µF}
V_OUT = 1.8V
Noise(10Hz to 100kHz) = 35.88µVRMS
0.001
10 100 1k 10k 100k 1M 10M
FREQUENCY (Hz)
LDO1
vs. Temperature
1.9
V = 4V
1.88 ^IN
1.86
C
OUT
=
2.2µF
1.84
1.82
1.8
1.78
1.76
1.74
1.72
1.7
TEMPERATURE (°C)
LDO1
Load Regulation
1.85
1.84
V
IN
=
5.5V
1.83
V
IN1
=
3.6V
1.82 C = 2.2µF
1.81
1.8
1.79
1.78
1.77
1.76
1.750 _{50 100 150 200 250 300}
OUTPUT CURRENT (mA)
MIC2811 LDO2 PSRR
100
90 _10mA
80
70
150mA
60
50
40
30 ^300mA
20
10
10E1+01 11E0+02 1E1k+3 11E0+k4 10E0+k5 11EM+6
FREQUENCY (Hz)
MIC2811 LDO2 Output Noise
Spectral Density
10
1
0.1 VIN = 4V
C_OUT = 2.2µF
0.01 ^{CBYP = 0.1µF}
V_OUT = 2.5V
Noise(10Hz to 100kHz) = 46.75µVRMS
0.001
10 100 1k 10k 100k 1M 10M
FREQUENCY (Hz)
LDO2
vs. Temperature
2.65
V = 4V
IN
2.6
C
OUT
=
2.2µF
I = 150mA
2.55 ^OUT
2.5
2.45
2.4
2.35
TEMPERATURE (°C)
LDO1
Line Regulation
1.85
V = 5.5V
1.84 ^IN
1.83
I
LOAD
=
150mA
C = 2.2µF
1.82
1.81
1.8
1.79
1.78
1.77
1.76
1.752 _{2.5 3 3.5 4 4.5 5 5.5}
VIN1 INPUT VOLTAGE (V)
April 2008
7
MIC2811/2821
MIC2811 LDO3 PSRR
80 _10mA
70
60
150mA
50
40
300mA
30
20
10
10E1+01 11E0+02 1E1+k3 11E0+k4 11E0+05k 11EM+6
FREQUENCY (Hz)
MIC2811 LDO3 Output Noise
Spectral Density
10
1
0.1 VIN = 4V
C_OUT = 2.2µF
0.01 ^{CBYP = 0.1µF}
V_OUT = 2.7V
Noise(10Hz to 100kHz) = 91.93µVRMS
0.001
10 100 1k 10k 100k 1M 10M
FREQUENCY (Hz)
LDO3
vs. Temperature
2.85
V = 4V
IN
2.8
C
OUT
=
2.2µF
I = 150mA
2.75 ^OUT
2.7
2.65
2.6
2.55
TEMPERATURE (°C)
LDO2
Line Regulation
2.53
I = 150mA
2.525 ^LOAD
C = 2.2µF
2.52
2.515
2.51
2.505
2.5
2.495
2.49
2.485
2.48
VIN2 INPUT VOLTAGE (V)
M9999-042208-A