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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The only real limitation is therefore the initial surge current as the output cap is charged up. Also note the Capacitors C1 and C2 are used at both the Input and output end. You see them in parallel because different cap types have different high frequency characteristics.

LM78L12 Datasheet PDF – First Components International

As the TI datasheet says 0. But what if I use a single 0. Lm78l112 you have any idea about it? I’d go with the application information as indicated by the TI datasheet. Another thing I never understood sometimes they put decoupling caps for power rails in parallel like 1u and n ect. Trevor I put 0. From Texas Instruments datasheet: If the energy released by the capacitor is large enough, this diode, low current metal, and the regulator are destroyed. There’s no sense in trying to get closer than that.

In that using a high current regulator like would be an ideal choice. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.


LM78L12 datasheet & applicatoin notes – Datasheet Archive

No, I mean caps with 0 ESR. How to use 78L Better than 3 capacitors in parallel. The fast diode in Figure 15 shunts most of the capacitors discharge current around the regulator. TL — Programmable Reference Voltage. Sign up or log in Sign up using Google.

In the circuit below a input voltage of 12V is regulated to 5V using the 78L So, if you are looking for a smaller package of voltage regulator that has small current rating in TO package then this IC might be the right choice.

Apart from using it as a voltage regulator it can also be used as a current regulator, short-circuit protector, booster circuit and even a variable voltage regulator. Although all the circuits in Fairchild data sheet show 0. From Texas Instruments datasheet:. Those values are really the recommended minimums.

And here is the part from the manufacturer Fairchild see recommended C1 is 0. 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. But another manufacturer Texas Instruments have different C1 recommendation on their datasheet which is 0.

When using large capacitors at the output of these datashdet, a protection diode connected input to output Figure 15 may be required if the input is shorted to ground. The Fairchild datasheet is limited to just data, with minimal application guidance. Did I get you correct? LM voltage regulator is recommended to be used with decoupling capacitors at its input and output as in the below diagram:.


LM78L12 Datasheet PDF

Alternative Regulator for 78L Paralelling is a little less common these days since you can get some pretty large value ceramics nowadays. Complete Technical Details can be found at the 78L05 datasheet given at the end of this page.

A 0 impedance input voltage isn’t going to hurt the regulator. If the device is more than six inches from the input filter capacitors, an input bypass capacitor, 0. If needed, use 0.

(PDF) LM78L12 Datasheet download

Home Questions Tags Users Unanswered. 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. These regulators also have the ability to limit current and protect when the temperature exceeds beyond junction temperature. Sign up using Facebook. I have two questions: The 78L05 is a three terminal voltage regulator.

The output current of this IC can go up to mA. It really does not matter much.