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Adding soft-start to LDL1117

Matt Staniszewski
Associate
Posted on April 27, 2018 at 04:00

Hi,

I'd like to use the fixed 3.3V variant of the LDL1117 on my board.  However, I have a concern with inrush current and wanted to add a soft-start if possible.  Can I modify the LDL1117 circuit to add in soft-start (i.e. adding a cap somewhere to control the ramp) or would it be better to add an external inrush limiter such as shown in the following app note:

http://www.ti.com/lit/an/slyt096/slyt096.pdf

 ?

Thanks!

Matt

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