AME1117 Datasheet, PDF (10/15 Pages) Analog Microelectronics – 1A Low Dropout Positive Voltage Regulator

Analog Microelectronics, Inc.
AME1117
1A Low Dropout Positive
Voltage Regulator
5. Thermal Consideration
The AME1117 series contain thermal limiting cir-
cuitry designed to protect itself from over-tem-
perature conditions. Even for normal load condi-
tions, maximum junction temperature ratings must
not be exceeded. As mentioned in thermal protec-
tion section, we need to consider all sources of
thermal resistance between junction and ambient.
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 di-
rectly 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 product series is electrically con-
nected to the output. Therefore, if the case of the
device must be electrically isolated, a thermally con-
ductive spacer is recommended.
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