TPS65311-Q1: LDO output capacitor

Kuramochi Tadahiko

Guru 28715 points

Part Number: TPS65311-Q1
Other Parts Discussed in Thread: LM10504

Hi,

Is the output capacitor of the LDO required if the LDO is disable?

Best Regards,

Kuramochi

over 7 years ago

0 Kevin LaRosa over 7 years ago

TI__Genius 17380 points

Hi Kuramochi-san,

We are working on your request and should get back to you shortly.

0 Krishnamurthy Hegde over 7 years ago in reply to Kevin LaRosa

TI__Expert 8730 points

Hello Kuramochi-san,

LDO capacitor is not necessary if LDO is not used. But do not forget to connect VSENSE4 pin to VMON1 pin.

I had sent to design check list to Shinji-san and missed to send it to you. You can find this checklist online and see the below link. Online version is for TPS65310A device, but both are same except the BUCK2/3 switching frequecny and you can refer this.

http://www.ti.com/lit/an/slva609/slva609.pdf

Also, could you please let me know the status of this project now? Have they completed the schematic diagram and layout for their first prototype?

You can send me an email.

Regards,

Murthy

Kuramochi

0 Kuramochi Tadahiko over 7 years ago in reply to Krishnamurthy Hegde

Guru 28715 points

Murthy-san,

Thank you for your help.

I posted this question because the another device(LM10504) was required the output capacitor of LDO.
This is not the question from the customer.

Customer completed the layout and they are manufacturing.

Best Regards,
Kuramochi

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TPS65311-Q1: LDO output capacitor