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 capacitor will then discharge through a large internal input to output diode and parasitic transistors.

By lk78l12 our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. When using large capacitors at the output of these regulators, a protection diode connected input to output Figure 15 may be required if the input is shorted to ground. They provide a constant output voltage for a varied input voltage. Email Required, but never shown. Another popular voltage regulator is which is bulkier in size but has high current rating of about 1A.

LM and decoupling capacitor value Ask Question.

LM78L12 Datasheet PDF – Bay Linear

Apart from using it as a voltage regulator datasheett can also be used as a current regulator, short-circuit protector, booster circuit and even a variable voltage regulator. Sign up using Email and Password. And here is the part from the manufacturer Fairchild see recommended C1 is 0.


Because the maximum current that this IC could supply is only upto mA. Complete Technical Details can be found at the 78L05 datasheet given at the end of this page. Some low ESR caps in parallel with some bulk 10uF caps won’t hurt.

Also note the Capacitors C1 and C2 are used at both the Input and output end. Olin Lathrop k 30 Alternative Regulator for 78L So you if connect high current loads daatasheet you can expect the IC to get l,78l12 hot soon and shunt down eventually. Without the protection diode, an input short causes the input to rapidly approach ground potential, while the output remains near the initial VOUT because of the stored charge in the large output capacitor.

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 datasheer 0. In that using a high current regulator like would be an ideal choice. The output current of this IC can go up to mA.


Another thing I never understood sometimes they put decoupling caps for power rails in parallel like 1u and datasyeet ect. It really does not matter much.


TL — Programmable Reference Voltage. A 0 impedance input voltage isn’t going to hurt the regulator.

If needed, use 0. Sign up or log in Sign up using Google. As the TI datasheet says 0. How to use 78L In the circuit below a input voltage of 12V is regulated to 5V using the 78L Sign up using Facebook. What you dagasheet doesn’t say what Co needs to be, only what value the rest of the specs are for. By clicking “Post Your Lm78ll12, 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.

The three terminals are Input, Output and ground as shown in the 78L05 pinout diagram. No, I mean caps with 0 ESR. StainlessSteelRat 3, 6 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 dataheet of the projects.