Find great deals on eBay for SMD in Electrical ICs and Processors. Shop with confidence. LMSMD Specifications: Regulator Type: Standard ; Output Polarity: Positive ; Output Voltage Type: Fixed ; Package Type: TO, Other, ISOLATED. too high for the heat sinking provided, the thermal shutdown circuit takes over preventing the IC from overheating. Features n LM78L05 in micro SMD package.

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Can you use a little lighter adapter to USB socket for your 5V source instead? Now with Unlimited Eagle board sizes! Heat sink will not be an issue, my project uses only about mA.

Again, thanks but please read my question. MarkT Brattain Member Posts: In a car application, this will give you some immunity to the variability in the car’s DC voltage. Now i’m thinking about going SMD, i’ve ordered some lmadj. That means it has been around a long time, several different companies make compatible versions, and they are everywhere.

I’m now confused whether i ordered the right parts, there are so many regulators available! I like this one because you can enter a variation in percent of the input voltage, and it automatically selects buck or boost.


78M05 (LM SMD) [] : Sunrom Electronics/Technologies

Even with 12V Llm7805, there is a 7V voltage drop. The most important spec in an automotive application is the input maximum voltage – expect the car’s 12V to have big voltage spikes on it, many LDO regulators have a poor Vin max spec and are not suitable.

Lm785 might consider a switching regulator. Great deal, you get MC, schottky diode, and a rewindable inductor. But now i also saw other types of regulators, eg. The MC is what is known as a “jelly bean” part. RobvdVeer on Oct 01, You can use Regulator LM cobine with zenner diode to make output stable at 5V.

The timer is another example of a jelly bean part.

Anyway, back to the OP’s topic. I’m looking for advise on SMD regulators.

78M05 (LM7805 SMD)

Question about voltage regulator to use. Can you help me please? I should be able to solder a sot by hand. An isolated DC-DC converter is a really good choice and worth thinking about – more tolerant of input voltage variations high and lowand fail-safe isolated. You’ll need quite a large package to simply dissipate the heat anyway, SMT or not.


I choose a batch of -adj so i can get any voltage i need in future projects.

For this i use a voltage regulator to convert the v down. I ran my Duemilanove for several days powered from one of these as a test. I have an Ultimaker and a 3D engraver. A lot less heat to worry about. Still have it plugged in in the car so it wouldn’t rattle around in a cup holder. Question about SMD voltage regulator to use. On my breadboard prototype i use a lm RobvdVeer Full Member Posts: Or possibly an in-car USB charger which should provide a clean 5V and not take any space on your circuit board.

For an automotive project i am using a custom p project running at 5v. There are several Javascript calculators around the web. Test equipment, replica and original sci fi props and costume pieces, and whatever else I feel like at the time.

CrossRoads on Oct 01, ,