M51996AP データシートの表示（PDF） - MITSUBISHI ELECTRIC

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M51996AP

SWITCHING REGULATOR CONTROL

MITSUBISHI ELECTRIC  

Attention for heat generation

The maximum ambient temperature of type M51996A is

+85°C,however,the ambient temperature in vicinity of the IC is

not uniform and varies place by place,as the amount of power

dissipation is fearfully large and the power dissipation is

generated locally in the switching regulator.

So it is one of the good idea to check the IC package

temperature.

The temperature difference between IC junction and the surface

of IC package is 15°C or less,when the IC junction temperature is

measured by temperature dependency of forward voltage of pin

junction,and IC package temperature is measured by "thermo-

viewer",and also the IC is mounted on the "phenol-base" PC

board in normal atmosphere.

So it is concluded that the maximum case temperature(surface

temperature of IC) rating is 120°C with adequate margin.

MITSUBISHI (Dig./Ana. INTERFACE)

M51996AP/FP

SWITCHING REGULATOR CONTROL

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