LMR14030-Q1: Thermal data of LMR14030-Q1

Tomohiro Nagasawa

Expert 1710 points

Part Number: LMR14030-Q1

Dear support team

Could you provide thermal data of below condition?

◆LMR14030-Q1

・Vin=12V Vout=3.3V Iout=2.6A @105℃

・Vin=12V Vout=3.3V Iout=2.6A @25℃

Regards

Tomohiro Nagasawa

0 Frank De Stasi over 8 years ago

What information are you looking for?

0 Tomohiro Nagasawa over 8 years ago in reply to Frank De Stasi

Expert 1710 points

Hello Frank-san

Sorry for lack of explanation.

The customer wants to confirm thermal margin in this condition.

Could you provide junction or case temprerature in this condition?

Regards

Tomohiro Nagasawa

0 Frank De Stasi over 8 years ago in reply to Tomohiro Nagasawa

The maximum junction temperature will depend on the thetaJA for you board size and application.

From the data sheet the efficiency under these conditions might be about 85%; that gives about 1.5W of power dissipation.

Based on a Webench simulation, the device will not do 105C ambient under these conditions for the board layout used in Webench.

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