If you want to purchase a switching three terminal regulator LM7805, do you have any friends to intr

The switching LM7805 is a high-efficiency switching regulator that is an ideal replacement for the 78xx series of three-terminal linear regulators with high efficiency, low losses, low heat generation, and no need for an external heat sink for use.

If you want to work in a place with a high voltage difference, such as a high input voltage (such as 12V) and a low output voltage (such as 5V), you will generally use a switching DC DC, otherwise when the output current is large, the voltage regulator will consume most of the power to do useless work - heating. If a switching DC DC is used, the efficiency can generally reach 90%, and the power consumption of the voltage regulator is much smaller.

Now it seems that there are manufacturers producing switch-type three-terminal regulator modules, such as Ten-Power's LM7805-1A and Morsun's K78XX series, which can directly replace the LM78XX series, although the ripple is a little larger (but it seems to be only about 50MV), a little more expensive, but the advantage is that the heat is very small, no heat sink is needed, it is very suitable for digital systems, especially those circuits with large FPGA, and the working current is not generally small. If it is used in analog circuits, then weigh it yourself.

7805 is analog, if it is a switch type, it is not called 7805, it should be P+.

But it's not the third end.

<> has a three-terminal switching voltage regulator module** store "Good Product Recommendation" has a large current of 1A, 2A, 3A, 5A, and overcurrent protection.

Switched? Haven't seen it yet.

The parameters of the 7805 three-terminal regulator are as follows:1、pin：igo。

2、iout(a)。

3、outputvoltage 。

4、outputvoltage 。

5、vi(v):35。

6. Package form: TO-220.

The biggest function of the 7805 three-terminal regulator is to step down the voltage and stabilize it to a fixed value before output. The common three-terminal regulator block can be divided into two types: positive voltage regulator block and negative voltage regulator block, the positive voltage has 78 series, and the negative voltage has 79 series, and the two series are not interchangeable, so do not mix them up when choosing.

The 7805 three-terminal regulator maintains the output minimum input voltage parameter very important, if it is to output the desired output voltage, the input voltage must be greater than this value, otherwise the desired output performance will not be obtained. The 7805 requires a minimum input voltage to:

Yes, it is our commonly used 7815 three-terminal voltage regulator manifold! It's just a different name!

This kind of voltage regulator only has three pins and outlets: input, output and common, so it is called a three-terminal regulator and only needs to connect one capacitor in parallel between its input, output and common terminal. The W78++ series is the output positive voltage, followed by the next two digits (++) indicating the output voltage of the regulator. There are a variety of models.

There are two main kinds of three-terminal regulators, one output voltage is fixed, called fixed output three-terminal regulator, and the other output voltage is adjustable, called adjustable output three-terminal regulator, the basic principle is the same, all use series voltage regulator circuits.

In the integrated voltage regulator, because the three-terminal regulator has only three lead-out terminals, it has the advantages of fewer external components, easy to use, stable performance, and low cost, so it has been widely used.