The LM78XX series of three terminal regulators is available with several fixed output voltages making them useful in a wide range of applications. One of these . CT NTE Equvilent NTE 12V positive voltage regulator. NTE Integrated Circuit 3 Terminal Positive Voltage Regulator 12V 1A. NTE Data Sheet. CT Datasheet, CT PDF, CT Data sheet, CT manual, CT pdf, CT, datenblatt, Electronics CT, alldatasheet, free, datasheet.

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The maximum dropout voltage Vd is 2. From what i datasbeet then from your answer Home Questions Tags Users Unanswered. Post as a guest Name.

Therefore it’s best to keep the input voltage just above the minimum to prevent the regulator 78812ct become overheated.

On page 6 of the datasheet, the maximum dropout voltage Vd dstasheet listed as 2. So if you have a 12W load it will draw 1A from the regulator. 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.

If so, what is the current like that it outputs?

7812CT Datasheet – 12V, Voltage Regulator

Sign up or log in Sign up using Google. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. I’ve seen LDOs with a dropout voltage of 50 mV. Peter Mortensen 1, 3 14 From the above it may look like you best make your input voltage a lot higher than the 12V output, but that’s not true.


The is not a LDO low-dropout regulatoras the typical dropout voltage is around 2 volts. Even though the typical dropout voltage is 2 volts, you should use the maximum value in your design.

A is a linear regulator, and does not step up the input voltage if the input is below dtaasheet output for that you need a DC-DC boost regulator. But since there’s this voltage drop the input voltage has to be higher than the output voltage. If you have an input voltage of 20V the same 1A will be drawn from that 20V. The is a non-LDO datasgeet regulator, which means it needs a higher input voltage.

CT Datasheet – MCCT –

The difference of 8W will be dissipated in the regulator. So the 20V delivers 20W, while the load only consumes 12W.

This is a snapshot of page The input voltage must be above the output. A control element will vary the resistance in practice a transistor so that the output voltage will remain constant regardless of input voltage and load.

Since the output is 12 volts, you add the two together to get a minimum input of Dean 4, 22 57 How does it go from a Maximum dropout voltage to a minimum input voltage? The datasheet does say how much it needs, but you may have to look for it. Sign up using Email and Password. So you won’t find a parameter “minimum input datzsheet, but it is mentioned as a condition for proper operation within certain limits.


How much higher depends on the type of regulator. On the datasheet it doesn’t mention an input voltage.

7812 12V 1A Voltage Regulator

There are LDOs Low Drop-Out which still can regulate the output if the input is only a few hundreds of mV higher and there are even ultra low drop-out types which only need a few tens of mV. This is a snapshot of page 8: All linear regulators have a minimum dropout voltageor difference. Email Required, but never shown.

Voltage regulators basically can be divided in two big groups: They are like a variable series resistor between input and output, causing a voltage drop across the regulator. A note on dissipation: All parameters are specified under certain conditions, and for the output voltage we can see that the condition is that the input voltage is minimum Linear regulators are different.

Sign up using Facebook. An LDO might have a dropout voltage of 0.