Part Number: LM78L12, Maunfacturer: National Semiconductor, Part Family: LM, File type: PDF, Document: Datasheet – semiconductor. VOLTAGE REGULATOR. LM78L TO Lead Plastic Package. 2. It is recommended that you completely review our Data Sheet(s) so as to. LM78L12 Linear Voltage Regulators are available at Mouser Electronics. Mouser offers inventory, pricing, & datasheets for LM78L12 Linear Voltage Regulators.

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So you are free to pick appropriate capacitors for input and output to reduce ripple, noise, etc. The only real limitation is therefore the initial surge current as the output cap is charged up.

LM78L12 Datasheet

TL — Programmable Reference Voltage. The Fairchild datasheet is limited to just data, with minimal application guidance. Paralelling is a little less common these days since you can get some pretty large value ceramics nowadays. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

LM78L12 Datasheet PDF

If the energy released by the capacitor is large enough, this diode, low current metal, and the regulator are destroyed. In fact, the lower the better. So you if connect high current loads then you can datasheer the IC to get very hot soon and shunt down eventually.

LM and decoupling capacitor value Ask Question. Some low ESR caps in parallel with some bulk 10uF caps won’t hurt. It is very easy and straight forward to use this IC, just connect the input in to the input voltage which has to be regulated and the ground pin to system ground.


But, the IC suffers from heavy heat loss hence a Heat sink is recommended for projects that consume more current. In that using a high current regulator like would be an ideal choice.

Apart from using it as a voltage regulator it can also be used as satasheet current regulator, short-circuit protector, booster circuit and even a variable voltage regulator.

National Semiconductor – datasheet pdf

Ci can be as large as you want. I have two questions: When using large capacitors at the output of these regulators, a protection diode connected input to output Figure 15 may be datasyeet if the input is shorted to ground. Email Required, but never shown. CI is required if regulator is located an appreciable distance from the power supply filter.

A 0 impedance input voltage isn’t going to hurt the regulator. But what if I use a catasheet 0.

It really does not matter much. From Texas Instruments datasheet: If needed, use 0.

LM78L12 Datasheet

Do you have any idea about it? These regulators also have the ability to limit current and protect when the temperature exceeds beyond junction temperature. I’d go with the application information as indicated by the TI datasheet. But another manufacturer Texas Instruments have different C1 recommendation on their datasheet which is 0.

Olin Lathrop k 30 Better than 3 capacitors in parallel. Because the maximum current that this IC could supply is only upto mA. LM voltage regulator is recommended to be used with decoupling capacitors at its input and output as in the below diagram: In our case the 78L05 IC is an iconic regulator IC that finds its application in most of the projects. Alternative Regulator for 78L They provide a constant output voltage for a varied input voltage. Rather those are what THEY had on hand to build the test circuit with and tabulate the numbers.


If the device is more than six inches from the input filter capacitors, an input bypass capacitor, 0. No, I mean caps with 0 ESR. Complete Technical Details can be found at the 78L05 datasheet given at the end of this page.

In the circuit below a input voltage of 12V is regulated to 5V using the 78L Trevor I put 0. How to use 78L Of course there is no such thing, but some technologies, like ceramic, have low ESR with large enough values to be useful in this application. The 78L05 is a three terminal voltage regulator. There’s no sense in trying to get closer than that.

I’m not sure those are exactly recommended values. Submitted by webmaster on 14 December Did I get you correct? 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.