RT9164A-15 데이터 시트보기 (PDF) - Richtek Technology

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RT9164A-15

1.0A Fixed and Adjustable Low Dropout Positive Voltage Regulators

Richtek Technology 

RT9164A

Preliminary

PD = (VIN - VOUT)× IOUT

TJUNCTION = TAMBIENT + (PD× θJA)

Note: TJUNCTION must not exceed 125°C

Current Limit Protection

RT9164A is protected against overload conditions.

Current protection is triggered at typically 1.8A.

Thermal Consideration

The RT9164A series contain thermal limiting circuitry

designed to protect itself from over-temperature

conditions. 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 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 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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DS9164A-01 December 2003

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