# 78012 DATASHEET PDF

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A note on dissipation: I’ve seen LDOs with a dropout voltage of 50 mV. Home Questions Tags Users Unanswered. Dean 4, 22 57 The current to your load flows through the regulator and is the same current as will be drawn from the input voltage.

### EP Datasheet pdf – 78K/0 series emulation probe – NEC

All linear regulators have a minimum dropout voltageor difference. If you have an input voltage of 20V the same 1A will be drawn from that 20V.

Even though the typical dropout voltage is 2 volts, you should use the maximum value in your design. Email Required, but never shown. So the 20V delivers 20W, while the load only consumes 12W.

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### Datasheet, PDF – Alldatasheet

How does it go from a Maximum dropout voltage to a minimum input voltage? A is a linear regulator, and does not step up the input voltage if the input is below the output for that you need a DC-DC boost regulator.

Therefore it’s best to keep the input voltage just above the minimum to prevent the regulator to become overheated. The input voltage must be above the output. 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 How much higher depends on the type of regulator.

That means that when your load consumes 10W the switcher will only dissipate 1W. From what i understand then from satasheet answer Voltage regulators basically can be divided in two big groups: The datasheet does say how much datahseet needs, but you may have to look for it. The is not a LDO low-dropout regulatoras the typical dropout voltage datashedt around 2 volts.

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An LDO might have a dropout voltage of 0.

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. Post as a guest Name.

If we look further we can see two values for line regulation; it appears that this is best 780112 the input voltage is at least 16V. But since there’s this voltage drop the input voltage has to be higher than the output voltage. So you won’t find a parameter “minimum input voltage”, but it is mentioned as a condition for proper operation within certain limits.

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Since the output is 12 volts, you add the two together to get a minimum input of 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 datasheer a few tens of mV. On the datasheet it doesn’t mention an input voltage. The difference of 8W will be dissipated in the regulator.

Linear regulators are different.