MIC24055 Datasheet, PDF (9/29 Pages) Micrel Semiconductor – 12V, 12A High-Efficiency Buck Regulator

Micrel, Inc.
Typical Characteristics (Continued)
100
95
90
85
80
75
70
65
60
55
50
0
Efficiency (VIN = 12V)
vs. Output Current
5.0V
3.3V
2.5V
1.8V
1.5V
1.2V
1.0V
0.9V
0.8V
VIN = 12V
3
6
9
12
15
IC Power Dissipation (VIN = 12V)
vs. Output Current
4.5
4.0
VIN = 12V
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0
3
V_OUT = 5V
V_OUT = 0.8V
6
9
12
OUTPUT CURRENT (A)
OUTPUT CURRENT (A)
MIC24055
Die Temperature* (VIN = 12V)
vs. Output Current
100
80
60
40
20
0
0
VIN = 12V
V_OUT = 1.8V
2
4
6
8
10
12
OUTPUT CURRENT (A)
Die Temperature* : The temperature measurement was taken at the hottest point on the MIC24055 case mounted on a 5 square inch, 4 layer,
0.62 inch, FR-4 PCB with 2oz finish copper weight per layer, see Thermal Measurement section. Actual results will depend upon the size of the PCB,
ambient temperature and proximity to other heat emitting components.
December 2012
9
M9999-120712-A