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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78L05 Voltage Regulator Pinout, Features, Equivalent & Datasheet

So you if connect high current loads then you can expect the IC to get very hot soon and shunt down eventually. Sign up or log in Sign up using Google. You have to look elsewhere dafasheet the datasheet to find the min and max allowed values.

In fact, the lower the better. Since these regulators protect themselves from output shorts, there is effectively no upper limit from the regulator’s point of view. Email Required, but never shown. TL — Programmable Reference Voltage. Post as a guest Name. You see them in parallel because different cap types have different high frequency characteristics. But 1u already lk78l12 the job of n.

The capacitor will then discharge through a large internal input to output diode and parasitic transistors. Some low ESR caps in parallel with some bulk 10uF caps won’t hurt. Ci can be as large as you want. 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.


The output current of this IC can go up to mA. Those values are really the recommended minimums.

Trevor I put 0. Another popular voltage regulator is lm78l112 is bulkier in size but has high current rating of about 1A. In the circuit below a input voltage of 12V is regulated to 5V using the 78L From Texas Instruments datasheet: The fast diode in Figure 15 shunts most of the capacitors discharge current around the regulator.

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.

For C1, can I use these three caps in parallel as their sum is 0. By clicking “Post Your Answer”, you acknowledge that you have read our updated terms daatasheet serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. From Texas Instruments datasheet:. As the TI datasheet says 0. If the energy released by the capacitor is large enough, this diode, low current metal, and the regulator are destroyed.

A 0 impedance input voltage isn’t going to hurt the regulator. But another manufacturer Texas Instruments have different C1 recommendation on their datasheet which is 0.


Rather those are what THEY had on hand to build the test circuit with and tabulate the numbers. There’s no sense in trying to get closer than that. So, if you datxsheet looking for a smaller package of voltage regulator that has small current rating in TO package then this IC might be the dwtasheet choice.

The 78L05 is a three terminal voltage regulator. But, the IC suffers from heavy heat loss hence a Heat sink is recommended for projects that consume more current.

3-Terminal Positive Regulators

So you are free to pick appropriate capacitors for input and output to reduce ripple, noise, etc. If I remember right your job to checkthe 78xx series regulators are stable with 0 ESR output caps.

I dqtasheet two questions: StainlessSteelRat 3, 6 These regulators also have the ability to limit current and protect when the temperature exceeds beyond junction temperature.

Olin Lathrop k 30 Without the protection diode, an input short causes the input datasehet rapidly approach ground potential, while the output remains near the initial VOUT because of the stored charge in the large output capacitor. On the output, TI states: In that using a high current regulator like would be an ideal choice.