Apr 05 2020

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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Did I get you correct? Trevor I put 0.

Home Questions Tags Users Unanswered. Another popular voltage regulator is which is bulkier in size but has high current rating of about 1A. 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. Better than 3 capacitors in parallel.

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Those values are really the recommended minimums.

From Texas Instruments datasheet: 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. If needed, use 0.

The Fairchild datasheet is limited to lj78l12 data, with minimal application guidance.


LM78L12 NTE Equivalent NTE IC-POS VR 12V MA – Wholesale Electronics

The three terminals are Input, Output and ground as shown in the 78L05 pinout diagram. Another thing I never understood sometimes they put decoupling caps for power rails in parallel like lm781l2 and n ect.

What you quote doesn’t say what Co needs to be, only what value the rest of the specs are for. In our case the 78L05 IC is an iconic regulator IC that finds its application in most of the projects. The fast diode in Figure 15 shunts most of the capacitors discharge current around the regulator. 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.

And here is the part from the manufacturer Fairchild see recommended C1 is 0.

National Semiconductor

StainlessSteelRat 3, 6 Because the maximum current that this IC could supply is only upto mA. If I remember right your job to checkthe 78xx series regulators are stable with 0 ESR output caps.

Paralelling is a little less common these days since you can get some pretty large value ceramics nowadays. Post as a guest Name. But 1u already does the job of n.

You have to look elsewhere in the datasheet lj78l12 find the min and max allowed values. Submitted by webmaster on 14 December The only real limitation is therefore the initial surge current as the output cap is charged up. Sign up using Facebook.

Trevor Oh never thought of it.

I’m not sure those are exactly recommended values. Some low ESR caps in parallel with some bulk 10uF caps won’t hurt. The output current of this IC can go up to mA. Alternative Regulator for 78L Email Required, but never shown. Of course there is no such thing, but some technologies, like ceramic, have low ESR with large enough values to datashee useful in this application. CI is required if regulator is located an appreciable distance from the power supply filter. I have two questions: 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.


The lm78l2 is a three terminal voltage regulator. In fact, the lower the better. Do you have any idea about it? Ci can be as large as you want. The regulated 5V can be obtained from the output pin if the IC. LM voltage regulator dataxheet recommended lm778l12 be used with decoupling capacitors at its input and output as in the below diagram: But, the IC suffers from heavy heat loss hence a Heat sink is recommended for projects that consume more current.

LM78L12 datasheet, LM78L12 datasheets, manuals for LM78L12 electornic semiconductor part

Complete Technical Details can be found at the 78L05 datasheet given at the end of this page. Voltage regulators are very dxtasheet in electronic circuits. How to use 78L