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.
|Published (Last):||28 June 2004|
|PDF File Size:||4.45 Mb|
|ePub File Size:||6.66 Mb|
|Price:||Free* [*Free Regsitration Required]|
What you quote doesn’t say what Co needs to be, only what value the rest of the specs are for. No, I mean caps with 0 ESR.
Did I get you correct? The three terminals are Input, Output and ground as shown in the datawheet pinout diagram. Sign up using Email and Password. There’s no sense in trying to get closer than that. Post as a guest Name. Rather those are what THEY had on hand to build the test circuit with and tabulate the numbers.
LM78L12 Datasheet(PDF) – First Components International
You have to look elsewhere in the datasheet to find the min and max allowed values. I’m not sure those are exactly recommended values. Paralelling is a little less common these days since you can get some pretty large value ceramics nowadays. For C1, can I use these three caps in parallel as their sum is 0.
If the energy released by the capacitor is large enough, this diode, low current metal, and the regulator are destroyed. In that using a high current regulator like would be an ideal choice. Voltage regulators are very common in electronic circuits.
You see them in parallel because different cap types have different high frequency characteristics. 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 datasehet system ground. TL — Programmable Reference Voltage. I’d go with the application information as indicated by the TI datasheet. When using large capacitors at the output of these regulators, a datashdet diode connected input to output Figure 15 may be required if the input is shorted to ground.
But what if I use a single 0. But 1u already does the job of n. In our case the 78L05 IC is an iconic regulator IC that finds its application in most of the projects. In fact, the lower the better. And dstasheet is the part from the manufacturer Fairchild see recommended C1 is 0.
Although all the circuits in Fairchild data sheet show 0. The only real limitation is therefore the initial surge current as the output cap is charged up. The regulated 5V can be obtained from the output pin if the IC. So, if you are looking for a smaller package of voltage regulator that has small current rating in TO package then datasbeet IC might be the right choice. StainlessSteelRat 3, 6 Another thing I never understood sometimes they put decoupling caps for power rails in parallel like 1u and n ect.
Trevor Oh never thought of it.
How to use 78L 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. Do you have any idea about it? Some low ESR caps in parallel with some bulk 10uF caps won’t hurt.
Sign up or log in Sign up using Google. 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. If the device is more than six inches from the input filter capacitors, an input bypass capacitor, 0. Also note the Capacitors C1 and C2 are used datasheett both the Input and output end.
Since these regulators protect themselves from output shorts, there is effectively no upper limit from the regulator’s point of view. From Texas Instruments datasheet:.