Title says it all. Application is cell phone and I need more efficiency. I'm using a LDO now. I can use TI, Maxim,LT, national, Micrel. Boss wants answer NOW!
regards, Bob N9NEO
Need tiny switcher 3.3v in 2.5vout 300ma
Apr 08, 2009
4 Replies
Linear Tech has some neat sot switchers.
Cheers
Plenty of options available there. How about the MAX8640:
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Tiny SC-70 package, available with 2.5V preset out (saving you parts), and around 87% efficiency @ 300mA. I haven't checked availability.
Dave.
The Micrel MIC2205 will hit 90% @ 300mA:
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How much board space do you have? Cost an issue? Got an efficiency target in mind? Is the load a fairly constant 300mA?, or does it vary a lot?
Dave.
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300mA 3.3V to 2.5V = ~96%
BTW your boss sounds like a right dick
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