LP2950: LP2950

Hi Hironari-san, 

With Vin=24V, Vout=5V and Iout=100mA, the LDO is burning (24-5)x 0.1 = 1.9Watts

Depending on what package you have, you may need to use the RthetaJA number to calculate the temperature rise. 

For example, if you are using the LP package, the temperature rise is 140 x 1.9 = 266 C. You will also need to add your ambient temperature to calculate the junction temperature. The highest junction needs to be less than 125C. Obviously, this package cannot tolerate such big power. 

Regards, 
Jason Song

Thank you very much your prompt reply.

I understand what you said.

But I would like to know any altanateve or recomendation from your devise such as DC/DC converter.

Vin=24V, Vout=5V, Iout=100mA are the same.

Can DC/DC prevent the heat up?

BEST REGARDS,

Hironari