MIC4950 Datasheet, PDF (6/18 Pages) Micrel Semiconductor – Hyper Speed Control 5A Buck Regulator

Micrel, Inc.
Typical Characteristics (Continued)
Quiescent Current
vs. Input Voltage
4
V_FB > 1.2 x V_FB(NOM)
3
I_OUT = 0A
2
1
0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
INPUT VOLTAGE (V)
Output Voltage (V_IN = 3.3V)
vs. Output Current
1.82
1.81
1.80
1.79
1.78
1.77
0
V_IN = 3.3V
V_OUT = 1.8V
1
2
3
4
5
OUTPUT CURRENT (A)
Feedback Voltage
vs. Temperature
0.635
0.630
0.625
0.620
0.615
0.610
0.605
-50
V_IN = 3.3V
V_OUT = 1.8V
I_OUT = 0A
-20 10 40 70 100 130
TEMPERATURE (°C)
Switching Frequency
vs. Temperature
3.0
2.8
2.6
2.4
V_IN = 3.3V
V_OUT = 1.8V
I_OUT = 0A
2.2
2.0
-50 -20 10
40
70 100 130
TEMPERATURE (°C)
Switching Frequency
vs. Output Current
3.6
3.2
V_IN = 5.0V
2.8
V_OUT = 1.8V
2.4
2.0
V_IN = 3.3V
V_OUT = 1.8V
1.6
1.2
0
1
2
3
4
5
OUTPUT CURRENT (A)
Switching Frequency
vs. Output Current
3.6
3.2
2.8
V_IN = 5.0V
V_OUT = 1.2V
2.4
2.0
V_IN = 3.3V
V_OUT = 1.2V
1.6
1.2
0
1
2
3
4
5
OUTPUT CURRENT (A)
MIC4950
Output Voltage (V_IN = 5V)
vs. Output Current
2.52
2.51
2.50
V_IN = 5V
V_OUT = 2.5V
2.49
2.48
2.47
2.46
0
1
2
3
4
5
OUTPUT CURRENT (A)
Switching Frequency
vs. Output Current
3.2
V_IN = 5.0V
2.8
V_OUT = 3.3V
2.4
2.0
1.6
1.2
0
1
2
3
4
5
OUTPUT CURRENT (A)
March 20, 2014
6
Revision 1.1