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7805 voltage regulator for your design

2017-12-21 10:25  
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This is most common voltage regulator that is still used in embedded designs. LM7805 voltage regulator is a linear regulator made by several manufacturers like Fairchild, orST Microelectronics. They can come in several types of packages. For output current up to 1A there may be two types of packages: TO-220 (vertical) and D-PAK (horizontal).

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With proper heat sink these LM78xx types can handle even more than 1A current. They also have Thermal overload protection, Short circuit protection.

If your design wona€?t exceed 0.1A current you may chose regulator LM78L05 with smaller packages and lower maximum current up to 0.1A. They come in three main types of packages SO-8, SOT-89 and TO-92

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Bellow is a table OF all LM78XX regulators and their output Voltages and input voltage ranges.

Part

Output (V)

Input range (V)

LM7805

5

7a€“25

LM7806

6

8a€“25

LM7808

8

10.5a€“25

LM7809

9

11.5a€“25

LM7810

10

12.5a€“25

LM7812

12

14.5a€“30

LM7815

15

17.5a€“30

LM7818

18

21a€“33

LM7824

24

27a€“38

Typical Connection is very simple:

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Couple decoupling capacitors (between 10 uF and 47 uF) are required on the input (V-IN) and output (V-OUT) connected to ground.

There are negative voltage regulators that work the same way. They are marked as LM79xx.


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