L7805CV

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L7805CV is a three-terminal linear voltage regulator, it is a monolithic integrated voltage regulator designed primarily for series pass applications. It is a member of 78xx family of fixed-linear voltage regulators. The maximum output current of this voltage regulator is 1.5A. The regulator has a current limit protection with an integrated thermal shutdown, meaning it stops working at too high temperatures. When it cools down the regulator resumes operation.

The main application fields of L7805CV is to provide local on-card regulation, eliminating the distribution problems associated with single-point regulation. It is specifically suited for applications that require very low noise and minimum number of external components. The L7805CV voltage regulator is preferred in applications such as manufacturing test equipment, warning systems, detectors, VCRs and other consumer electronics.

The 7805CV voltage regulator features a two-stage design that provides very high PSRR (power supply rejection ratio) and low output noise. The two stages consist of a three-terminal adjustable shunt regulator operating in series with an output stage. It can supply up to 1.5 A of output current with an output voltage ranging from 5V up to 24V; the output voltage can be adjusted using an adjustable external reference. The 7805CV device also features an enable pin that can be used to enable or disable the output stage.

To operate, the 7805CV should be connected to a power supply and the output adjusted to the required level. The enable pin is connected to a logic signal to enable or disable the output stage. The output voltage is controlled by an external reference voltage that is connected to the ADJ pin. The voltage for the output is determined by the external reference compared to the internal bandgap reference, and the current flowing from the adjust pin to the output pin is controlled by the internal current mirror.

The 7805CV voltage regulator features an improved transient response over other linear regulators. It has a short-circuit protection feature that protects the device in case of an output short circuit. The device also includes a current limit circuit and a thermal shutdown circuit. The current limit circuit is used to protect the device from possible damage in case of an output overload or short circuit, while the thermal shutdown circuit protects the device from high temperatures.

In summary, the L7805CV voltage regulator is an ideal choice for applications requiring low noise and minimal external components. It can provide up to 1.5 A of output current with an adjustable output voltage range from 5V up to 24V. The two-stage design provides improved PSRR and output noise, while the current limit and thermal shutdown features protect the device from overloads and high temperatures.

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