MIC69301_11 Datasheet, PDF (6/13 Pages) Micrel Semiconductor – Single Supply VIN, Low VIN, Low VOUT, 3ALDO

Micrel, Inc.
Typical Characteristics
Power Supply
Rejection Ratio
70
60
50
40
30
20
V_IN = 3.3V
10 ^VOUT ^{= 1.8V}
I_OUT = 0.5A
0
1K 10K
FREQUENCY (Hz)
Dropout Voltage
vs. Temperature
400
350
300
I_OUT = 3A
250
200
150
I_OUT = 1.5A
100
50
V_OUT = 1.2V
C_OUT = 10µF
0
20 40 60 80
TEMPERATURE (°C)
1.220
1.215
1.210
1.205
1.200
1.195
1.190
1.185
1.180
Output Voltage
vs. Temperature
V_IN = 2.2V
V_OUT = 1.2V
I_OUT = 10mA
C_OUT = 10µF
20 40 60 80
TEMPERATURE (°C)
Enable Threshold
vs. Temperature
1.0
0.9
0.8
0.7
0.6
ON
0.5
0.4
OFF
0.3 _{VIN = 2.2V}
0.2 VOUT = 1.2V
0.1
I_OUT = 100mA
C_OUT = 10µF
0
20 40 60 80
TEMPERATURE (°C)
March 2011
Dropout Voltage
vs. Output Current
300
250
200
150
100
50
V_OUT = 1.2V
C_OUT = 10µF
00 _{0.5 1.0 1.5 2.0 2.5 3.0}
OUTPUT CURRENT (A)
Ground Current
vs. Output Current
35
30
25
20
15
10
V_IN = 2.2V
5
V_OUT = 1.2V
C_OUT = 10µF
00 _{0.5 1.0 1.5 2.0 2.5 3}
OUTPUT CURRENT (A)
Current Limit
vs. Temperature
7
6
5
4
3
2
1
V_IN = 2.2V
V_OUT = 1.2V
C_OUT = 10µF
0
20 40 60 80
TEMPERATURE (°C)
MIC69301/2/3
Dropout Voltage
vs. Input Voltage
1.4
1.2
500mA
1.0
0.8
1.5A
3A
0.6
0.4
0.2
V_OUT = 1.2V
C_OUT = 10µF
00 _{0.5 1.0 1.5 2.0 2.5}
INPUT VOLTAGE (V)
Ground Current
vs. Temperature
50
45
40
35
I_OUT = 3A
30
25
20
15
I_OUT = 1.5A
10 V_IN = 2.2V
5 ^{VOUT = 1.2V}
0
C_OUT =
10µF
20
40
60
80
TEMPERATURE (°C)
Load Regulation
1.300
1.275
1.250
1.225
1.200
1.175
1.150
1.125
1.1000
V_IN = 2.2V
V_OUT = 1.2V
C_OUT = 10µF
0.5 1.0 1.5 2.0 2.5 3.0
OUTPUT CURRENT (A)
6
M9999-032111-F