Why 1.8 V in Denebola kit is supplied by IC REG BUCK ADJUSTABLE instead of LDO?

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ArSa_3842301
Level 3
Level 3
25 sign-ins 10 replies posted 10 questions asked

Hi there,

I have seen in the CX3 reference schema from eCon System(Denebola) that the 1.8 Voltage is supplied by IC REG BUCK ADJUSTABLE, concretely LT3503EDCB#TRMPBF model. But the rest of the needed voltages are supplied by model TPS748, which is a LDO voltage from Texas Instruments. So I would like to know why all of them are not equals. Becaus I am carry out a design with CX3 and I am confused about that.

So, is there any problem if i put a LDO to get 1.8V in a PCB for  the CX3?

Thanks.

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Rashi_Vatsa
Moderator
Moderator
Moderator
5 likes given 500 solutions authored 1000 replies posted

Hello,

Please refer to these reference designs by econ system using CX3

Ascella - https://www.cypress.com/documentation/development-kitsboards/ascella-cypress-cx3-thine-isp-13mp-refe...

Tania- https://www.cypress.com/documentation/development-kitsboards/tania-cypress-cx3-socionext-isp-referen...

Both of these designs use DC to DC voltage converter for the 1.8V supply to CX3.

There is no specific reason of using LT3503EDCB#TRMPBF in the Denebola kit.

Regards,

Rashi

Regards,
Rashi

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Rashi_Vatsa
Moderator
Moderator
Moderator
5 likes given 500 solutions authored 1000 replies posted

Hello,

Please refer to these reference designs by econ system using CX3

Ascella - https://www.cypress.com/documentation/development-kitsboards/ascella-cypress-cx3-thine-isp-13mp-refe...

Tania- https://www.cypress.com/documentation/development-kitsboards/tania-cypress-cx3-socionext-isp-referen...

Both of these designs use DC to DC voltage converter for the 1.8V supply to CX3.

There is no specific reason of using LT3503EDCB#TRMPBF in the Denebola kit.

Regards,

Rashi

Regards,
Rashi
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