AME, Inc.
5A Low Dropout
Positive Voltage Regulator
AME1084
5. Thermal Consideration
The AME1084 series contain thermal limiting circuitry
designed to protect itself for over-temperature conditions.
Even for normal load conditions, maximum junction tem-
perature ratings must not be exceeded. As mention in
thermal protection section, we need to consider all
sources of thermal resistance between junction and am-
bient. It includes junction-to-case, case-to-heat-sink in-
terface and heat sink thermal resistance itself.
Junction-to-case thermal resistance is specified from
the IC junction to the bottom of the case directly below
the die. Proper mounting is required to ensure the best
possible thermal flow from this area of the package to the
heat sink. The case of all devices in this series is electri-
cally connected to the output. Therefore, if the case of
the device must be electrically isolated, a thermally con-
ductive spacer is recommended.
Rev.N.02
13
AME [ ANALOG MICROELECTRONICS ]
