Micrel Inc.
MIC2267
Typical Characteristics
Shutdown Current
vs. Input Voltage
Supply Current
vs. Input Voltage
Shutdown Current
vs. Temperature
100
500
450
400
350
300
250
200
150
100
50
10
9
8
7
6
5
4
3
2
1
0
VEN = 0V
TAMB = 25°C
90
80
VEN = 0V
IN = 5V
V
70
60
50
40
30
20
10
0
VEN = 1.8V
TAMB = 25°C
FSW = 1MHz
0
-60 -40 -20
0
20 40 60 80 100
2.5
3
3.5
4
4.5
5
5.5
6
2.5
3
3.5
4
4.5
5
5.5
6
INPUT VOLTAGE (V)
TEMPERATURE (°C)
INPUT VOLTAGE (V)
Supply Current
vs. Temperature
Reference Voltage
vs. Input Voltage
Reference Voltage
vs. Temperature
10
9
8
7
6
5
4
3
2
1
0
1.020
1.015
1.010
1.005
1.000
0.995
0.990
0.985
0.980
1.020
1.015
1.010
1.005
1.000
0.995
0.990
0.985
0.980
VEN = 1.8V
VIN = 5V
FSW = 1MHz
TAMB = 25°C
VIN = 5V
-50 -30 -10 10 30 50 70 90 110 130
-50 -30 -10 10 30 50 70 90 110 130
2.5
3
3.5
4
4.5
5
5.5
6
TEMPERATURE (°C)
TEMPERATURE (°C)
INPUT VOLTAGE (V)
Enable Threshold
vs. Input Voltage
Enable Threshold
vs. Temperature
Switching Frequency
vs. Temperature
1.8
1.6
1.4
1.2
1
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
1200
1150
1100
1050
1000
950
0.8
0.6
0.4
VEN HIGH
VEN LOW
900
VEN HIGH
VEN LOW
850
VIN = 5V
800
-50 -30 -10 10 30 50 70 90 110 130
2.5
3
3.5
4
4.5
5
5.5
6
-50 -30 -10 10 30 50 70 90 110 130
TEMPERATURE (°C)
INPUT VOLTAGE (V)
TEMPERATURE (°C)
MOSFET RDS(ON)
vs. Temperature
MOSFET RDS(ON)
vs. Input Voltage
Output Voltage
vs. Output Current
180
160
140
120
100
80
160
140
120
100
80
3.320
3.315
3.310
3.305
3.300
3.295
3.290
3.285
3.280
60
60
40
40
VIN = 5.5V
PMOS RDSon
IOUT = 0.5A
IOUT = 0.5A
TAMB = 25°C
PMOS RDSon
NMOS RDSon
20
VOUT = 3.3V
20
NMOS RDSon
VIN = 5V
0
0
-50 -30 -10 10 30 50 70 90 110 130
2.5
3
3.5
4
4.5
5
5.5
6
0
0.5
1
1.5
2
TEMPERATURE (°C)
INPUT VOLTAGE (V)
OUTPUT CURRENT (A)
M9999-011711-A
January 2011
5