MIC5323 Datasheet, PDF (5/15 Pages) Micrel Semiconductor – High PSRR Low Noise 300mA μCap Ultra-Low Dropout LDO Regulator

Micrel, Inc.
Typical Characteristics
Power Supply Rejection Ratio
(C_BYP=1µF)
0
-10
-20
IOUT = 300mA
-30
-40
IOUT = 100mA
-50
-60
I_OUT = 1mA
-70
-80
V_IN = V_OUT + 1V
-90
VOUT = 1.8V
-100
1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06
FREQUENCY (Hz)
Ground Current vs.
Input Voltage
110
100
I_OUT = 300mA
90
80
I_OUT = 100mA
I_OUT = 100µA
70
60
V_OUT = 1.8V
50
2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
Output Voltage vs.
Input Voltage
3.5
3.0 ^{IOUT = 100µA}
2.5
IOUT = 150mA
2.0 ^IOUT ^{= 300mA}
VOUT = 2.8V
1.5
2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
Power Supply Rejection Ratio
(C_BYP = 0.1µF)
0
-10
-20
IOUT = 300mA
-30
-40
IOUT = 100mA
-50
-60
IOUT = 1mA
-70
-80
VIN = VOUT + 1V
-90
VOUT = 1.8V
-100
1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06
FREQUENCY (Hz)
Ground Current vs.
Output Current
110
100
90
80
70
60
50
0
V_IN = V_OUT + 1V
V_OUT = 1.8V
50 100 150 200 250 300
OUTPUT CURRENT (mA)
800
700
600
500
400
300
200
100
2.5
Current Limit vs.
Input Voltage
V_OUT = 1.8V
3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
MIC5323
Power Supply Rejection Ratio
(CBYP = 0.01µF)
0
-10
-20
IOUT = 300mA
-30
-40
IOUT = 100mA
-50
IOUT = 1mA
-60
-70
-80
VIN = VOUT + 1V
-90
VOUT = 1.8V
-100
1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06
FREQUENCY (Hz)
Ground Current vs.
T emperature
110
100
90
I_OUT = 300mA
80
I_OUT = 100µA
I_OUT = 100mA
70
60
VIN = VOUT + 1V
V_OUT = 1.8V
50
-40 -20
0 20 40 60 80 100 120
TEMPERATURE (°C)
160
140
120
100
80
60
40
20
0
0
Dropout Voltage vs.
Output Current
VOUT = 2.8V
50 100 150 200 250 300
OUTPUT CURRENT (mA)
November 2011
5
M9999-110311B