An IMPORTANT NOTICE at the end of this data sheet addresses availability, . Changed all text, tables and graphics to match the new data sheet template. LM Datasheet, LM PDF, LM Data sheet, LM manual, LM pdf, LM, datenblatt, Electronics LM, alldatasheet, free, datasheet. VOUT = 10V. PRELOAD = mA. OBSOLETE PRODUCT. DATA SHEET FOR REFERENCE ONLY. Consult for possible alternate source.

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However, we have updated the article. The second half of this doesn’t make any sense at all.

lm datasheet & applicatoin notes – Datasheet Archive

Instead, the entire chip becomes the feedback loop. Just keep in mind that the filtered but unregulated input current to the regulator circuit must be greater in amperage than your desired output, in order to maintain regulation, if the input current drops below the set output current, there is no telling what can happen, from circuit damage, to oscillation of the output, which would be the equivalent of feeding 5v AC to your circuit being powered.

When the ICs were introduced, the advertising called them “blowout proof,” meaning dataxheet would not be damaged by a short circuit and would turn off if they got too hot. This difference between the input and output dattasheet is released as heat. And what exactly happens if one regulator is inevitably a little higher in voltage than the other?

Short story is that you can’t reliably or cleanly get twice the current from two paralleled voltage regulators that ostensibly produce the same output. Sign up using Email and Password. Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies.


All About IC 7805 | Voltage Regulator

Career advice and jobs related to electronics and IOT. The bypass capacitors help reduce AC ripple. Does this IC boost voltage input is voltage is less than 5? The values of capacitors can also be changed slightly.

datqsheet If the regulator does not have a heat sink to dissipate this heat, it can get destroyed and malfunction. If not, I am looking for an IC which has Operating range from v and constant 5v output. So, we now have 2 options. Sure there will be more EMI than from a linear regulator datahseet is switchingbut that’s not usually an insurmountable problem.

Misunderstood 5, 1 5 You used “might” datazheet times. Email Required, but never shown. The input voltage was monitored on an Oscope and never changed more than a handful of millivolt dataeheet, but the output of his circuit was a flat topped high frequency pulse in the Hz range. And Yes I have seen this happen when this exact same thing was tried, in lab, when I was a student, and another student tried this exact same setup, feeding the regulator circuit from a 12 volt 1 amp regulated power supply.

I assume that means you don’t know but I hurt your feelings somehow in answering or commenting on some other question.

Rather get another voltage regulator that can handle the current. TI, in current literature says they “employ internal current-limiting, thermal lm0785 and safe-area compensation, making them essentially indestructible. Is it related to the error amplifier behind the FB pin?


Worse yet, some datasheets show that approach too. From the voltage and current I assume something like a single board computer or a board with lots of logic.

We have no information that the output voltage needs to be extra quiet. You can’t assume there can be two exactly identical chips.

Might or might not be catastrophic for the load. In many applications, the higher noise, switching artifacts, and poorer regulation response make switchers a bad choice.

Why not use the high current schematic the datasheet provides? Circuit taken from here and there appear to be several variants of this on the web such as this: Linear regulators may in fact be paralleled, but not directly.

The regulator now needs to pass less current itself. Without knowing what the application needs, especially if there might be EMI or reliability concerns, is blanket recommending a SMPS of any description a good idea?

So twice the energy, that is actually utilized is wasted. If the question is “can I do that with any two equal s? Post as a guest Name.

Nothing is as simple as black and white, as some may want to believe. For crucial applications, the parts can be tested and binned to use parts that are closer together.