MIC5320 Datasheet, PDF (11/13 Pages) Micrel Semiconductor – Dual, High Performance 150mA uCap ULDO

Micrel, Inc.
For example, when operating the MIC5320-MFYML at
an input voltage of 3.3V and 150mA loads at each
output with a minimum footprint layout, the maximum
ambient operating temperature T_A can be determined
as follows:
0.345W = (125°C – T_A)/(100°C/W)
T_A=90.5°C
MIC5320
Therefore, a 2.8V/1.5V application with 150mA at
each output current can accept an ambient operating
temperature of 90.5°C in a 1.6mm x 1.6mm 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
July 2006
11
M9999-073106