MIC261201 Datasheet, PDF (10/30 Pages) Micrel Semiconductor – 28V, 12A Hyper Speed Control™ 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)
MIC261201
Die Temperature* : The temperature measurement was taken at the hottest point on the MIC261201 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