Micrel, Inc.
In addition, the thermal couple tip must be covered in
either thermal grease or thermal glue to make sure that
the thermal couple junction is making good contact with
the case of the IC. Omega brand thermal couple (5SC-
TT-K-36-36) is adequate for most applications.
Wherever possible, an infrared thermometer is
recommended. The measurement spot size of most
infrared thermometers is too large for an accurate
reading on a small form factor ICs. However, a IR
thermometer from Optris has a 1mm spot size, which
makes it a good choice for the 2mm x 2mm MLF
®
or
Thin MLF
®
package. An optional stand makes it easy to
hold the beam on the IC for long periods of time.
For a full discussion of heat sinking and thermal effects
of 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
MIC47050
April 2012
12
M9999-040312-B
MICREL [ MICREL SEMICONDUCTOR ]
