MIC5308 Datasheet, PDF (4/11 Pages) Micrel Semiconductor – Low VIN/VOUT 150mA High PSRR ULDO with Ultra-Low IQ

Micrel, Inc.
Typical Characteristics
Power Supply
Rejection Ratio (V_IN)
-120
100µA _100mA
-100
-80
100µA (no byp)
-60
50mA ^150mA
-40 _{VIN = VOUT + 1V}
V_OUT = 1.2V
-20 _{COUT = 1µF}
C_BYP = 0.01µF
010 _{100 1K 10K 100K 1M}
FREQUENCY (Hz)
Ground Current (V_IN)
vs. Output Current
10
9
8
7
6
5
4
3
V_IN = 2.2V
2
V_BIAS = 3.6V
1
V_OUT = 1.2V
C_OUT = 1µF
00 _{25 50 75 100 125 150}
OUTPUT CURRENT (mA)
Ground Current (V_IN)
vs. V_IN
10
9
8
150mA
7
6
100µA
5
4
3
2
V_BIAS = 5.5V
1
V_OUT = 1.8V
C_OUT = 1µF
10.5 2 2.5 3 3.5 4 4.5 5 5.5
VIN (V)
Dropout Voltage
vs. Output Current
50
45
40
35
30
25
20
15
10
5
C_OUT = 1µF
00 _{25 50 75 100 125 150}
OUTPUT CURRENT (mA)
November 2007
Power Supply
Rejection Ratio (V_BIAS)
-100
-90
-80
100µA
-70
-60
-50 ^150mA
-40
50mA
-30
-20 ^VIN ^{= 2.8V}
-10010CV^OOUU₁^TT₀₌₌₀
1.8V
1µF
1K
10K 100K 1M
FREQUENCY (Hz)
Ground Current (V_BIAS)
vs. Output Current
16
14
12
10
8
6
4
V_IN = 2.2V
V_BIAS = 3.6V
2
C_OUT = 1µF
C_BYP = 1µF
00 _{25 50 75 100 125 150}
OUTPUT CURRENT (mA)
Bias Current
vs. Enable Voltage
40
35
30 ^100µA
25
20
150mA
15
10
V_BIAS = 5.5V
5
V_OUT = 1.8V
C_OUT = 1µF
00 _{1 2 3 4 5}
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
MIC5308
Ground Current (V_IN)
vs. Temperature
10
9
8
7
150mA
6
5 _100µA
4
3
V_IN = 2.2V
2
V_BIAS = 3.6V
1
V_OUT = 1.2V
C_OUT = 1µF
0
20 40 60 80
TEMPERATURE (°C)
Ground Current (Total)
vs. Output Current
30
28
26
24
22
20
18
16
V_IN = 2.2V
14
V_BIAS = 3.6V
12
C_OUT = 1µF
C_BYP = 1µF
10
0 25 50 75 100 125 150
OUTPUT CURRENT (mA)
Dropout Voltage
vs. Temperature
80
70
60
50
150mA
40
30
20
10
C_OUT = 1µF
0
20 40 60 80
TEMPERATURE (°C)
Output Voltage
vs. Output Current
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
25 50 75 100 125
OUTPUT CURRENT (mA)
M9999-110807-B