LM73606-Q1: Schematic review of LM73606-Q1

Hi Sharique Ji,

I see LM73606-Q1 in the schematic but you have mentioned LMR43610. Have you shared the correct schematic? Please verify. 

Please fill in the quickstart calculator for this device: https://www.ti.com/tool/download/SNVR524 and share with me. 

If it is a new project - please consider using one of our newer parts: https://www.ti.com/product/LM61460-Q1 

Thanks,

Best Regards,

Taru

Hi Taru,

Thanks for the response.

Yes, we want to verify schematics of LM73606-Q1, I am attaching filled quickstart calculator with you.

Regards,LM73605-LM73606(-Q1) Quickstart Tool - Rev10-22.xlsm

Hi Sharique Ji,

Please see my review comments:

1. CBOOT and VCC - Ensure you use high quality caps here (X7R/X5R is recommended)

2. fsw = 1272 kHz (based on Rt resistor)

3. Inductor - Ensure the current ratings of the inductor are in accordance with the values calculated in the quick start calculator. 

4. Please also check if the IC power loss (and consequently the rise in junction temperature) is in accordance with your max ambient temperature and max IC junction requirements. If not, you may have to reduce the switching frequency for better thermals at the cost of slightly larger inductor. 

Thanks,

Best Regards,

Taru