·Output current in excess of A. ·Output voltage of 12V. ·Internal thermal overload protection. ·Output transition Safe-Area compensation. ABSOLUTE. The L series of three-terminal positive regulators is available in TO, TO- FP, TO-3 and D2PAK packages and several fixed output voltages, making it. LM datasheet, LM pdf, LM data sheet, datasheet, data sheet, pdf, BayLinear, A Positive Voltage Regulator.

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There’s no sense in trying to get closer than that.

Since these regulators protect themselves from output shorts, there is effectively no upper limit from the regulator’s point of view. As the TI datasheet says 0.

The only real limitation is therefore the initial surge current as the output cap is charged up. In fact, the lower the better.

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Sign up using Facebook. You see them in parallel because different cap types have different high frequency characteristics. Sign up or log in Sign up using Google. Post as a guest Name. By using our site, datssheet acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

lm78xx – LM and decoupling capacitor value – Electrical Engineering Stack Exchange

Ci can be as large pm7812 you want. If needed, use 0. And here is the part from the manufacturer Fairchild see recommended C1 is 0.


It really does not matter much. But another manufacturer Texas Instruments have different C1 recommendation on their datasheet which 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. 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.

A 0 impedance input voltage isn’t going to hurt the regulator. On the output, TI states: Paralelling is a little less common these days since you can get some pretty large value ceramics nowadays. The fast diode in Figure 15 shunts most of the capacitors discharge current around the regulator.

Datssheet voltage regulator is recommended to be used with decoupling capacitors at its input and output as in the below diagram: Do you have any idea about it? 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. Sign up using Email and Password.

LM Datasheet Fairchild pdf data sheet FREE from

I’m not sure those are exactly recommended values. No, I mean caps with 0 ESR.


I have two questions: Olin Lathrop dxtasheet 30 If the device is more than six inches from the input filter capacitors, an input bypass capacitor, 0. I’d go with the application information as indicated by the TI datasheet. Although datashet the circuits in Fairchild data sheet show 0. Some low ESR caps in parallel with some bulk 10uF caps won’t hurt. Better than 3 capacitors in parallel.

You have to look elsewhere in the datasheet to find the min and max allowed values. From Texas Instruments datasheet: 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.

Trevor I put 0. Another thing I never understood sometimes they put decoupling caps for power rails in parallel like 1u and n ect. If the energy released by the capacitor is large enough, this diode, low current metal, and the regulator are destroyed.

datasueet The capacitor will then discharge through a large internal input to output diode and parasitic transistors. If I remember right your job to checkthe 78xx series regulators are stable with 0 ESR output caps. Trevor Oh never thought of it.