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L78S05CV 2A Positive Fixed Voltage Regulator

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Quoting product code: UJ54J


About this product


  • Typical working voltage of 3v
  • RC oscillated with external resistance
  • Selectable sounds and tones

Product overview

  • Typical working voltage of 3v
  • RC oscillated with external resistance
  • Selectable sounds and tones
  • Reset functionality

This positive fixed voltage regulator has a quiescent current of 8mA, a short circuit current of 500 mA, a ripple rej. of between 46 and 54dB and is housed in a TO220 style case. The output voltage has a tolerance of ±4%. The input voltage range has an upper limit of +35V.

Can this replace a L7805CV ?.  I don't know the difference between L7805CV and L78S05CV

Asked by: Warren
Yes, I am pleased to advise this will be suitable for your needs.
Answered by: Russell
Date published: 2017-08-28

What are the lead connections

Asked by: Dave
Answered by: Les
Date published: 2016-08-25

What is the minimum input voltage

Asked by: Westie
The input voltage for this item is listed as +8V.
Answered by: Gareth
Date published: 2016-08-22

Could you recommend a particular heatsink for this please and do you have a datasheet, e.g. pinouts at least? Thanks.

Asked by: Timbo
Datasheet can be found here We have a range of heatsinks, but it would be for you to choose whichever best suits your requirements.
Answered by: Les
Date published: 2017-01-27

I want to step down from 12v dc source to 2.4 v dc output. What components will I also require to achieve this and how should they be connected. Thanking you in advance.

Asked by: Stingray
Please be assured, if you have any queries with regards to specific products from our stock, we will be more than happy to assist. However, it is important to note that as a retail only company we are unable to assist with any design projects or queries, or advise on specific products that may be required for your purpose.
Answered by: Dominic
Date published: 2015-07-17


Asked by: DAVE
The Output Voltage Nom is: 5V
Answered by: Dominic
Date published: 2017-10-22
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