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Buck Boost Converter details required

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jayamohan

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Hello all,

i have a GPS circuit working in 3.3 V, i need battery back up for this circuit atleast with 1 hour.I tried with 3.7V,500mA Lit-ion battery with LTC3441.But the circuit is not satisfactory.

Do anyone have a buck-boost converter circuit which works in the range of 3.7V to 0.5V and the output as constant 3.3V, 500mA.


Thanks in advance.


Regards
Mohan.
 

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