MIC5309_08 Datasheet, PDF (4/11 Pages) Micrel Semiconductor – Low VIN/VOUT 300mA High PSRR ULDO with Ultra-Low IQ

Micrel, Inc.
Typical Characteristics
Power Supply
Rejection Ratio (V_IN)
-120 _{100µA 150mA}
-100
50mA
-80
100µA (no byp)
-60
300mA
100mA
-40 _{VIN = VOUT + 1V}
-20
V_OUT = 1.2V
C_OUT = 1µF
C_BYP = 0.01µF
010 _{100 1K 10K 100K 1M}
FREQUENCY (Hz)
Ground Current (V_IN)
vs. Output Current
20
18
V_IN = 2.2V
V_BIAS = 3.6V
16
V_OUT = 1.2V
14
C_OUT = 1µF
12
10
8
6
4
2
00 _{50 100 150 200 250 300}
OUTPUT CURRENT (mA)
Ground Current (V_IN)
10
100µA
9
vs. V_IN
8
7
300mA
6
5
4
3
2
V_BIAS = 5.5V
1
V_OUT = 1.78V
C_OUT = 1µF
10.5
2.5
3.5
4.5
5.5
VIN (V)
Dropout Voltage
vs. Output Current
120
110
100
90
80
70
60
50
40
30
20
10
C_OUT = 1µF
00 _{50 100 150 200 250 300}
OUTPUT CURRENT (mA)
May 2008
Power Supply
Rejection Ratio (V_BIAS)
-120
-100
100µA
-80
-60
100µA (no byp)
300mA
-40 _{VIN = 2.8V}
150mA
-20
V_OUT = 1.8V
C_OUT = 1µF
C_BYP = 0.01µF
010 _{100 1K 10K 100K 1M}
FREQUENCY (Hz)
Ground Current (V_BIAS)
vs. Output Current
18
16
14
12
10
8
6
V_IN = 2.2V
V_BIAS = 3.6V
4
C_OUT = 1µF
2
C_IN = 1µF
C_BYP = 0.01µF
00 _{50 100 150 200 250 300}
OUTPUT CURRENT (mA)
Bias Current
vs. Enable Voltage
40
35
30
100µA
25
20 300mA
15
10
V_BIAS = 5.5V
5
V_OUT = 1.8V
C_OUT = 1µF
00 _{1 2 3 4 5 6}
ENABLE VOLTAGE (V)
Output Voltage
vs. Temperature
1.30
1.25
1.20
1.15
1.10
V_IN = 2.2V
V_BIAS = 3.6V
V_OUT = 1.2V
C_OUT = 1µF
I_OUT = 100µA
20 40 60 80
TEMPERATURE (°C)
4
MIC5309
Ground Current (V_IN)
vs. Temperature
20
18
V_IN = 2.2V
V_BIAS = 3.6V
16
V_OUT = 1.2V
14
C_OUT = 1µF
12
10
8 _300mA
6
4
100µA
2
0
20 40 60 80
TEMPERATURE (°C)
Ground Current (Total)
vs. Output Current
30
28
26
24
22
20
18
V_IN = 2.2V
16
V_BIAS = 3.6V
14
C_OUT = 1µF
12
C_IN = 1µF
C_BYP = 0.01µF
10
0 50 100 150 200 250 300
OUTPUT CURRENT (mA)
Dropout Voltage
vs. Temperature
120
C_OUT = 1µF
100
300mA
80
60
150mA
40
20
100µA
0
20 40 60 80
TEMPERATURE (°C)
Output Voltage
vs. Output Current
1.30
V_IN = 2.2V
V_BIAS = 3.6V
1.25
V_OUT = 1.2V
C_OUT = 1µF
1.20
1.15
1.100
50 100 150 200 250 300
OUTPUT CURRENT (mA)
M9999-051508-D