MIC261203 Datasheet, PDF (10/31 Pages) Micrel Semiconductor – 28V, 12A Hyper Light Load™ Synchronous DC/DC Buck Regulator

Micrel, Inc.
Typical Characteristics (Continued)
Thermal Derating*
vs. Ambient Temperature
18
16
2.5V
14
12
10
5V
8
6
4 ^{VIN = 12V}
V_OUT = 2.5, 3.3, 5V
2
0
-50 -25
0
25 50
75 100 125
AMBIENT TEMPERATURE (°C)
Thermal Derating*
vs. Ambient Temperature
18
16
14
12
0.8V
10
8
2.5V
6
4 V_IN = 24V
2 ^{VOUT = 0.8, 1.2, 2.5V}
0
-50 -25
0
25 50 75 100 125
AMBIENT TEMPERATURE (°C)
MIC261203
Die Temperature* : The temperature measurement was taken at the hottest point on the MIC261203 case mounted on a 5 square inch 4 layer, 0.62”,
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.
July 2011
10
M9999-071311-A