AT9173 Ver la hoja de datos (PDF) - AME, Inc

Número de pieza

componentes Descripción

Fabricante

AT9173

Bus Termination Regulator

AME, Inc 

AME, Inc.

AT9173

Bus Termination Regulator

n Thermal issue

AT9173 has a internal thermal protection to protect the device at any overload conditions. For safety reason

the operation junction temperature should not exceed 125 ℃. The dissipation of the device is

PD = (VIN − VOUT ) xI OUT

And also the maximum power dissipation is

PD,MAX = (T J ,MAX − T A ) / θ JA

Where Tj,max is the maximum operation junction 125 degree C, Ta is the ambient temperature and the is θ JA

the junction to ambient thermal resistance. The junction to ambient thermal resistance is 70 ℃/W for exposed

pad SOP-8 package. It can be dramatically reduced by placing a large area PCB trace under exposed pad to

emit heat generated by the die attached to the exposed pad.

8

Rev. C.04

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