MIC5380 Datasheet, PDF (9/12 Pages) Micrel Semiconductor – High Performance Dual 150mA LDO 1mm x 1mm Thin MLF

Micrel, Inc.
For example, when operating the MIC5380-PPYFT at an
input voltage of 3.6V and 150mA loads at each output
with a minimum footprint layout, the maximum ambient
operating temperature T_A can be determined as follows:
0.18W = (125°C – T_A)/(150°C/W)
T_A = 98°C
MIC5380/1
Therefore, a 3.0V/3.0V application, with 150mA at each
output current, can accept an ambient operating
temperature of 98°C in a 1mm x 1mm MLF^® package.
For a full discussion of heat sinking and thermal effects
on voltage regulators, refer to the “Regulator Thermals”
section of Micrel’s Designing with Low-Dropout Voltage
Regulators handbook. This information can be found on
Micrel's website at:
http://www.micrel.com/_PDF/other/LDOBk_ds.pdf
November 2008
9
M9999-110608-A