MIC22950 Datasheet, PDF (4/22 Pages) Micrel Semiconductor – 10A Integrated Switch Synchronous Buck Regulator with Frequency Programmable to 2MHz

Micrel, Inc.
Typical Characteristics
Shutdown Current
vs. Input Voltage
7
6
5
4
3
2
1
T_A = 25°C
0
2
3
4
5
6
INPUT VOLTAGE (V)
Input Current (no SW)
vs. Temperature
0.9
0.88
0.86
0.84
0.82
0.8
0.78
0.76
0.74
-40 -20
0 20 40 60 80 100 120
TEMPERATURE (°C)
1.26
1.255
1.25
1.245
1.24
1.235
1.23
1.225
1.22
2.5
Enable Threshold
vs. Input Voltage
Enable (ON)
T_A = 25°C
3 3.5 4 4.5 5 5.5
INPUT VOLTAGE (V)
Shutdown Current
vs. Temperature
10
9
8
7
6
5
4
3
2
1
V_IN = 3.3V
0
-40 -20
0 20 40 60 80 100 120
TEMPERATURE (°C)
0.708
0.706
0.704
0.702
0.7
0.698
0.696
0.694
0.692
2
Reference Voltage
vs. Input Voltage
T_A = 25°C
3
4
5
6
INPUT VOLTAGE (V)
Enable Threshold
vs. Temperature
1.26
1.255
1.25
1.245
Enable (ON)
1.24
1.235
1.23
1.225
V_IN = 3.3V
1.22
-40 -20
0 20 40 60 80 100 120
TEM PERATURE (°C)
MIC22950
Operating Current (no SW)
vs. Input Voltage
1.2
1
0.8
0.6
0.4
0.2
0
2
T_A = 25°C
3
4
5
6
INPUT VOLTAGE (V)
Reference Voltage
vs. Temperature
0.708
0.706
0.704
0.702
0.7
0.698
0.696
0.694
0.692
-40 -20
0 20 40 60 80 100 120
TEMPERATURE (°C)
Switching Frequency
vs. Temperature
650
600
550
500
450
400
350
CF = 390pF
300
-40 -20
0 20 40 60 80 100 120
TEMPERATURE (°C)
February 2010
4
M9999-021910-B