MIC22705_11 Datasheet, PDF (9/29 Pages) Micrel Semiconductor – 1MHz, 7A Integrated Switch High-Efficiency Synchronous Buck Regulator

Micrel, Inc.
MIC22705
Typical Characteristics (Continued)
Efficiency (VIN = 5.0V)
vs. Output Current
100
95
90
3.3V
2.5V
85
80
75
70
0
V_IN = 5.0V
1234567
OUTPUT CURRENT (A)
1.8V
1.5V
1.2V
1.0V
0.9V
0.8V
89
IC Power Dissipation vs. Output
Current (VIN = 5V)
2
V_IN = 5V
V_OUT = 0.8V, 1.0V, 1.2V, 1.5V, 1.8V, 2.5V, 3.3V
1.5
1
0.5
0
0
2
4
6
OUTPUT CURRENT (A)
Case Temperature* (VIN = 5.0V)
vs. Output Current
100
80
60
40
20
0
0
VIN = 5V
VOUT = 1.8V
1234567
OUTPUT CURRENT (A)
Die Temperature* : The temperature measurement was taken at the hottest point on the MIC22705 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.
March 2011
9
M9999-033111-A