More Power

[blueroomelectronics]

I've use the National Semi Simple Switchers like the LM2675, they're really nice little regulators and they run cool compared to linear device.
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On a sidenote the 78S05 can handle 2A but you need to keep it cool.

 

[ericgibbs]

hi atom,
What are the details of the voltage source on the input connector and what are you driving with the +5V and 3.3V.?

 

[AtomSoft]

sorry guys this is for normal usage like a micro and SD card. Maybe a glcd or CLCD(char lcd)

This thread was mainly for the first post but i didnt want to make another POWER thread juts for this. Im DO NOT need more than 1A-1.5A for this. I need this for a SD thing im doing just want to make sure i have each section at 100% or close

 

[AtomSoft]

LM2675 takes a nice high voltage in. How does it not heat up when it drops it must be cool.

 

[Ubergeek63]

LM2675 takes a nice high voltage in. How does it not heat up when it drops it must be cool.

the power that would be dissipated in a linear is stored in the inductor.

 

[blueroomelectronics]

Switchmode regulators are very cool, they're only on long enough to charge the inductor and most boast very high efficiency.
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