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duel input LDO (1 dc and other li-ion battery ) with charging ability

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mot1639

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dear all ,,

i start design my pcb project , i lock for my power side in my project an DC to Dc convertor IC , with battery input and same time it can be charge if DC connect to my circuit or start feed the circuit if there no DC input , the current i look for is 1A ,

i know with some ic it can be done, but i look for single chip which can do all this ,, please advice ..

regards
 

Hi,

current is 1A:
charge current, power supply current, application current?

But voltages you keep totally in secret....

...Makes it difficult to give good assitance.

Klaus
 

Hi,

charge current, power supply current, application current?

But voltages you keep totally in secret....

...Makes it difficult to give good assitance.

Klaus

thank you mr klaus , the volt it range between 3.4 to 5v is ok with me , thank you in advance

regards
 

Hi,

You like to post riddles and keep us busy:

You urgently need to tell what "currents" and "voltages" you are talking about.

charge current, power supply current, application current?

Without these informations it´s useless to discuss.

Klaus
 

Have you looked at dual input power prioritizers?
 

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