MIC22205 Datasheet, PDF (9/29 Pages) Micrel Semiconductor – 2A, Integrated, Switch, High-Efficiency

Micrel, Inc.
Typical Characteristics (Continued)
MIC22205
Efficiency (V_IN = 5V)
vs. Output Current
100
95
90
3.3V
2.5V
85
1.8V
80
1.5V
1.2V
75
1.0V
0.9V
70
0.8V
65
0.7V
60
V_IN = 5V
55
50
0
0.6 1.2 1.8 2.4
3
OUTPUT CURRENT (A)
IC Power Dissipation (VIN = 5.0V)
vs. Output Current
0.72
0.6
0.48
0.36
0.24
Curves Top to Bottom
3.3V
2.5V
1.8V
1.5V
1.2V
1.0V
0.9V
0.8V
0.7V
0.12
0
0
0.4 0.8 1.2 1.6
2
OUTPUT CURRENT (A)
Case Temperature* (V_IN = 5.0V)
vs. Output Current
80
60
40
20
0
0.0
V_IN = 5V
V_OUT = 1.8V
0.5
1.0
1.5
2.0
OUTPUT CURRENT (A)
Die Temperature* : The temperature measurement was taken at the hottest point on the MIC22205 case and mounted on a five-
square inch PCB (see Thermal Measurements section). Actual results will depend upon the size of the PCB, ambient temperature, and
proximity to other heat-emitting components.
August 2011
9
M9999-082511-A