LP5036EVM: Tj calculation

daniel

Genius 5095 points

Part Number: LP5036EVM
Other Parts Discussed in Thread: LP5036,

Hi Team,

We use LP5036EVM to verify LP5036 power dissipation, and calculate Tj.

We use 5Vin, LED= 15mA*36 channel= 540mA.

What is the Pd of LP5036 this moment?

We measured Tcase is about 60C, but seems not match with d/s section 7.4, 7.5(Vcc, Ivcc)

Also, for Tj calculation, is it use "Tj = Tc + Pd * Psi-JT" ?

Thanks

0 Charles-Chen over 5 years ago

Hi, Daniel,

Q1: What is the Pd of LP5036 this moment?

Please refer to the following training video.

Q2: Also, for Tj calculation, is it use "Tj = Tc + Pd * Psi-JT" ?

Yes. You can refer to the application Report of "Semiconductor and IC Package Thermal Metrics" for details.

Q3:We measured Tcase is about 60C, but seems not match with d/s section 7.4, 7.5(Vcc, Ivcc)

Sorry, could you explain your mismatch in more detail?

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