MIC2810 Datasheet, PDF (9/18 Pages) Micrel Semiconductor – Digital Power Management IC 2MHz, 600mA DC/DC w/Dual 300mA/300mA Low VIN LDOs

Micrel, Inc.
Typical Characteristics ― LDO1/LDO2
Power Supply Rejection Ratio
LDO1[LOWQ Mode]
80
V_IN = 3.6V
70
V_OUT = 1.2V
C_OUT = 2.2µF
60
I_OUT = 25mA
/LowQ = GND
50
40
30
20
10
0
0.01 0.1 1 10 100 1000
FREQUENCY (kHz)
Power Supply Rejection Ratio
LDO2[LOWQ Mode]
90
V_IN = 3.6V
80
V_OUT = 2.8V
70
C_OUT = 2.2µF
I_OUT = 25mA
60
/LowQ = GND
50
40
30
20
10
0
0.01 0.1 1 10 100 1000
FREQUENCY (kHz)
LDO2 Ground Current
vs. Output Current
80
Power Supply Rejection Ratio
LDO1[Normal Mode]
70
V_IN = 3.6V
60
V_OUT = 1.2V
C_OUT = 2.2µF
50
I_OUT = 100mA
/LowQ = V_IN
40
30
20
10
00.01 0.1 1 10 100 1000
FREQUENCY (kHz)
Power Supply Rejection Ratio
LDO2[Normal Mode]
80
V_IN = 3.6V
70
V_OUT = 2.8V
C_OUT = 2.2µF
60
I_OUT = 100mA
50
/LowQ = V_IN
40
30
20
10
00.01 0.1 1 10 100 1000
FREQUENCY (kHz)
LDO2 Ground Current
vs. Temperature
80
75
70
70
60
65
50
60
V_IN = 3.6V
V_OUT = 2.8V
550
/LowQ = V_IN
50 100 150 200 250 300
OUTPUT CURRENT (mA)
LDO2 Dropout Voltage
vs. Temperature
110
40
30-40 _{-20 0}
V_IN = 3.6V
I_OUT = 200mA
/LowQ = V_IN
20 40 60 80 100 120
TEMPERATURE (°C)
LDO2 Output Noise
Spectral Density
10
100
90
80
70
60-40 _{-20 0}
V_OUT = 2.8V
I_OUT = 200mA
/LowQ = V_IN
20 40 60 80 100 120
TEMPERATURE (°C)
1
0.1
0.01 VIN = 4.2V
V_OUT = 2.8V
C_OUT = 2.2µF
/LowQ
0.0001.01 _0.1
=
V_IN
1
10
100 1,000 10,000
FREQUENCY (kHz)
April 2007
9
MIC2810
LDO1 Line Regulation
2.0
1.9
1.8
1.7
C_OUT = 2.2µF
V_IN = 3.6V
I_OUT = 150mA
/LowQ = V_IN
1.26.7 _{3.1 3.5 3.9 4.3 4.7 5.1 5.5}
INPUT VOLTAGE (V)
LDO2 Load Regulation
2.85
2.80
2.75
2.700
C_OUT = 2.2µF
V_IN = 3.6V
/LowQ = V_IN
50 100 150 200 250 300
OUTPUT CURRENT (mA)
LDO2 Dropout Voltage
vs. Output Current
140
120
100
80
60
40
20
V_OUT = 2.8V
/LowQ = V_IN
0
0 50 100 150 200 250 300
OUTPUT CURRENT (mA)
M9999-041107-B