Company, ST Microelectronics, Inc. Datasheet, Download LF33CV datasheet. Cross ref. Similar parts: BA30JC5T, ASU, TSCZ33, TSCZ33 . LF33CV datasheet, LF33CV pdf, LF33CV data sheet, datasheet, data sheet, pdf, ST Microelectronics, VERY LOW DROP VOLTAGE REGULATORS WITH. STMicroelectronics LF33CV: available from 25 distributors. Explore Integrated Circuits (ICs) on Octopart: the fastest source for datasheets, pricing, specs.

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Every time we want to learn something, it is faster and better for us when we l33cv relate all new concept to something we know well from our real life experience.

Such an analogy, when basic concepts of electricity are concerned, is a water. Imagine a pipe interconnecting two identical reservoirs filled with some amount of water. Additionaly somewhere in a pipe a paddle wheel is mounted to make our observations easier. If water level in both reservoirs is the same, no water flow in our pipe can be observed and a paddle wheel stays motionless.

Very Low Drop Voltage Regulators With Inhibit

Datqsheet obserwation is that despite we have a conductor pipe and something inside it water which can power our device move a paddle wheels nothing happens. The same is with electricity. We have a conductor, like a copper wire, and something inside it electrons which can power our device LED but nothing happens.

The reason for this is that presence of electrons is not enough to power a device as presence of water is not enough to move paddle wheel. To move our paddle wheel, we have to generate a water flow in a pipe. A simplest option is to fill one of the reservoirs while make second empty. In other words, there is no ordered movement of lf3c3v. To change this, as we do in a water analogy, we have to fill with electrons one side negative side of a wire while make second side scarce of electrons positive side.

Then electrons will move from negative side to positive and power our device LED. A tool we can use to make one side negative while second positive is a battery.

The flow of current that we get from a battery is known as direct currentor DC. Like the flow of water from a faucet, it is a steady stream that flows in one direction. The flow of current that we get from the power outlet in our home is very different. This is known as alternating currentor AC.


No, not from the beginning. We have to start from quit complicated electronic circuit if you would build it from scratch. We will not dive into details of it, but we need it for our further experiments. The answer is simple: During our tutorials we will build many circuits and we can power them with different batteries: Imagine that on my tutorials I use 12V powers source but you have only one 9V battery.

This could be a problem, because all components’ values like resistance, capacity etc woud be for you useless force you to recalculate all of them. On the other side, most of microcontrollers components are powered with 3. That is why I made a decision to start from circuit which as input takes almost any power source but as output generates every time 3.

This type of circuits is called voltage regulator. So if you have 3.

At this point we can say A voltage regulator is designed to automatically maintain a constant voltage level. As a rule of thumb we have to remember that for linear voltage regulator the input voltage must always be higher than the output voltage by some minimum amount.

This ,amount” depends on type of regulator: Please try to find information about dropout voltage in datasheet of some regulators see further. Simple linear regulators may only contain a Zener diode and a series resistor; more complicated regulators include separate stages of voltage reference, error amplifier and power pass element. Because a linear voltage regulator is a common element of many devices, integrated circuit regulators, as discussed abowe, are very common. Examples of fixed linear voltage regulator Let’s take a closer look at some exemplary fixed linear voltage regulator LDO 3.

Switching converters When the output regulated voltage must be higher than the available input voltage, no linear regulator will work.

In this situation, something like a switched-mode power supply. Switching converters provide much greater power efficiency as DC-to-DC converters than linear regulators, which are simpler circuits and waste some amount of power as heat. The most basic converters of this type costs about PLN which is times more expensive than linear regulator.

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Power – Tutorials

In this tutorial we cover the following topics Before we start: As we can see from preceding material, a real current flow direction is from negative side minus to positive plus. In practise we consider a virtual flow of a positive particle from plus to minus. It doesn’t matter which one we prefer as long as we are consequent. A voltage regulator is designed to automatically maintain a constant voltage level.

Using linear voltage dataxheet you have to take into accout that all of them require an input voltage at least some minimum amount higher than the desired output voltage. That minimum amount is called the dropout voltage. For example, a common regulator such as the has an output voltage of 5V, but can only maintain this if the input voltage remains above about 7V.

LF33CV Data Sheet | STMicroelectronics OEMSecrets

When the supply voltage is less than about 2V above the desired output voltage, datashret low dropout regulators LDOs must be used. The currency we use doesn’t matter – the ratio of two product datasjeet important. The ratio stays, more or less, constant for different currencies.

In this type regulator design, the input current required is always the same lc33cv the output current. As the input voltage must always be higher than the output voltage, this means that the total power voltage multiplied by current – see formula below going into regulator will be more than the output power provided.

The difference is dissipated as heat. This means both that for some applications an adequate heatsink must be providedand also that a often substantial portion of the input power is wasted during the process, rendering them less efficient than some other types of power supplies. We may preffere buck converters see further over linear regulators because they are more efficient and do not require heat sinks, but they are more expensive.

Please pay an attention to pinouts dztasheet and check it twice befor use if you don’t want to damage your regulator.

Compare for example pinouts for LDO 3.