IL1117-XX 데이터 시트보기 (PDF) - Unspecified

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IL1117-XX

1.0A Low Dropout Positive Voltage Regulator

Unspecified 

IL1117-xx

Figure 5. Best Load Regulation Using Adjustable Output Regulator

Thermal Protection

IL1117 has thermal protection which limits junction temperature to 150°C. However, device functionality is

only guaranteed to a maximum junction temperature of +125°C. The power dissipation and junction tem-

perature for IL1117 in DPAK package are given by

Note: TJUNCTION must not exceed 125°C

Current Limit Protection

IL1117 is protected against overload conditions. Current protection is triggered at typically 1.6A.

Thermal Consideration

The IL1117 series contain thermal limiting circuitry designed to protect itself from over-temperature condi-

tions. Even for normal load conditions, maximum junction temperature ratings must not be exceeded. As

mention in thermal protection section, we need to consider all sources of thermal resistance between junc-

tion and ambient. It includes junction-tocase, 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 series is electrically connected to the output. Therefore, if the

case of the device must be electrically isolated, a thermally conductive spacer is recommended.

Rev. 02

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