3,3V z tuzkove baterie

[Tomáš Pípal]

Nebylo by lepsi pouzit step up menic, napriklad LT1307 nebo LM2621?

Tomas Lehotsky napsal(a):
> Dobry den,
> riesim nasledujucu vec. Potrebujem napajat chip od STmicroelectronics 
> STE100P(datasheet - 
> http://www.st.com/stonline/products/literature/ds/6806.pdf 
> <http://www.st.com/stonline/products/literature/ds/6806.pdf> ) napatim 
> 3,3V. Kedze vysledne zariadenie bude prenosne, potrebujem zabezpecit 
> aby toto napatie pochadzalo z napr. AAA tuzkovych baterii.
> V tzv. application note ( 
> http://www.st.com/stonline/products/literature/an/7353.pdf ) k chipu 
> STE100P je napr pouzity low drop regulator od STcka LE33C ( 
> http://www.st.com/stonline/products/literature/ds/2573.pdf 
> <http://www.st.com/stonline/products/literature/ds/2573.pdf> ), ktory 
> by mal byt k dostaniu v ERA components( http://www.eracomponents.cz ).
> No a teraz prichadza moja otazka. Napajanie tohto regulatoru je v 
> katalogovom liste uvedene ako max. 18V, ale minimalna hodnota uvedena 
> nieje. Je teda jedno kolko tuzkovych baterii pouzijem? Aky je podla 
> Vas optimalny pocet baterii a ako to zapojit k tomu regulatoru aby to 
> fungovalo korektne. Privital by som aj konkretne schema.
> Nebranim sa pouzitiu ani inych okamzite dostupnych regulatorov.
>
> Uvitam vsetky podnety, napady a  dobre rady.
> Dakujem.
>
> Tomas Lehotsky
>
>
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