L7808CV-DG

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L7808CV-DG, a three-terminal fixed output negative voltage regulator, belongs to the Linear voltage regulator field of PMIC (Power Management Integrated Circuit). The output voltage of it is typically 7.8V, that is (-)7.8V, and its maximum output current could reach 1.5A. It is mainly used in power supply need of various electronic equipment.

The working principle of L7808CV-DG is like most other voltage regulators. It consists of three parts: an adjustable reference voltage source, an error amplifier, and a output driver. Firstly, its adjustable reference voltage works as the basis for all its regulation functions. This voltage is established by an internal zener diode network at 7.8V. Then an amplifier, usually an op-amp, will compare the input voltage with the reference voltage and generate a corresponding error signal. Finally, depending on the error signal, the output driver will provide the power to the output. It will either increase or decrease the output voltage to a certain value, which is the same with the reference voltage.

L7808CV-DG has been widely used in various electronic equipments, like TV sets, video cassette recorders and equipment provided 12V, 15V or 18V DC power supply. Especially in the fields of mobile communication and instrumentation. The power supply stability is greatly improving due to the help of L7808CV-DG. It also provides a variety of protection functions like current limiting protection and short circuit protection.

In brief, with the advantages of output current up to 1.5A and high temperature stability, L7808CV-DG has become a successful application in the PMIC - Voltage Regulator - Linear fields and made great contribution to the power supply stability.

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