LMR38015-Q1: SCH Review

Hi Xiaowei,

What is the input voltage range for the LMR38015?

Regards,

Niranjan

Hi Niranjan,

The input voltage will be 16-38V (24V battery system)

BTW, do we have excel design tool for this device?

Best Regards,

Xiaowei Zhang

Hi Xiaowei,

I am on leave till Wednesday. I will get back to you after that.

Regards,

Niranjan

Hi Niranjan

Can you please help feedback some comments?

Best Regards,

Xiaowei Zhang

Hi Xiaowei,

1) If you are using the fixed 5V version of the device, you do not need the feedback resistors/Cff. FB should be shorted to VOUT.

2) Input should not be used to pull-up PG since the absmax of PG pin is 20V. You can use VOUT instead.

3) The minimum recommended ceramic capacitance at input is 4.7 uF. I would suggest changing the 1 uF caps accordingly.

4) The RC snubber values, if placed, have to be determined experimentally. I cannot comment on those.

Regards,

Niranjan