AME1117ACBT datasheet(11/19 Pages) AME

Part #	AME1117ACBT

Description	1A Low Dropout Positive Voltage Regulator

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Manufacturer	AME [Analog Microelectronics]

Direct Link	http://www.ame.com.tw/

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AME, Inc.

Rev.S.02

11

AME1117

1A Low Dropout

Positive Voltage Regulator

5. Thermal Consideration

The AME1117 series contain thermal limiting circuitry

designed to protect itself from over-temperature condi-

tions. Even for normal load conditions, maximum junc-

tion temperature ratings must not be exceeded. As men-

tioned in thermal protection section, we need to consider

all sources of thermal resistance between junction and

ambient. It includes junction-to-case, case-to-heat-sink

interface 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 product series is

electrically connected to the output. Therefore, if the case

of the device must be electrically isolated, a thermally

conductive spacer is recommended.

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