Electronics > Beginners
Suggestions for 5V switching regulator?
rcbuck:
I am working on a project that has a 12 volt supply as the main supply. I want to use a regulator to produce a 5V output that will have a current of around 500 ma max. I don't want to use a linear regulator due to the heat losses and heat sinking that would be needed. A switching supply is the option I want to use.
I have sort of setteled on the Active-semi ACT4088. However, I'm not familiar with this company and would prefer something from one of the larger semiconductor companies.
Any suggestions for a regulator in the $1 or so range that has simplified circuitry? Input voltage should be minimum of 15 volts since I am using 12 volts for the input. I prefer SMD but would use through hole if necessary. The closest to these requirements I have found is Microchip's LM2574-5.0YN that is in a DIP package.
langwadt:
if you are only building a few it is hard to beat the price and convenience of something like this:
https://www.ebay.co.uk/itm/253861589475
beanflying:
+1 for those little boards. 500mA will be fine and I have used them on several projects. Put them on pins as a daughter board works well.
T3sl4co1l:
I like these:
https://www.digikey.com/product-detail/en/texas-instruments/LMR14006XDDCR/296-44318-1-ND/6110592
Cost is under a buck in reels; you're spending more in assembly and design cost at lower quantities so I don't see any need for being more picky.
There are cheaper regs, but you're on your own as far as fighting with their quirkiness, blowing up your load if they fail, and sourcing them, including avoiding even-more-inferior counterfeits. In short, there's always more cost.
Tim
beanflying:
Just checked one of mine the boards above use this regulator https://media.monolithicpower.com/document/MP2307_r1.9.pdf or possibly a clone of it but as a circuit it works and it is more or less built to the circuit in the data sheet with an adjustable pot for output voltage.
MPS has more Regulators than you can poke a stick at if you want to look at there list here is a link to their 14-19V Vin https://www.monolithicpower.com/en/products/dc-dc-power-conversion/switching-regulators/step-down-buck/converters/vin-max-14v-to-19v.html
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