Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

L7808ABV-DG Application Field and Working Principle

PMIC (Power Management ICs) are integrated circuits (ICs) or architectures that are designed to manage the power supply and usage of electronic systems. PMICs are typically used in electronic systems such as smartphones and tablets, microprocessors, servers, and other embedded systems that require complex power management solutions. Among them, voltage regulators are PMICs designed to maintain a constant voltage level. Linear voltage regulators are one type of voltage regulators that are typically used in older designs or systems with limited space.

The L7808ABV-DG is a low drop-out (LDO) linear voltage regulator from the STMicroelectronics lineup. It is a positive LDO voltage regulator with an adjustable output voltage of 1.25V to 20V, a maximum output current of 600mA, and a standard 800mV dropout voltage. This regulator offers smooth, continuous outputs with a ±2% accurate voltage output.

Application Field

The L7808ABV-DG linear voltage regulator provides a wide range of applications due to its compact size and adjustable voltage range. It is widely used in consumer electronics, solar power systems, high power LED illumination systems, DC/DC converters, automotive electronics, and more. Additionally, its high efficiency, low noise performance, and protective features make it suitable for a variety of power management applications.

Working Principle

The L7808ABV-DG operates in a linear fashion. It effectively works by “sinking” wasteful current from the output to ground. This is done by first transferring power from the input to a series of transistors, which act as a resistor in the circuit. When the output voltage is lower than the input voltage, the transistors will conduct a base current and then turn on. This causes excess current to be sunk to ground, reducing the difference between the output and input, thus stabilizing the output voltage. The stabilizing circuit continuously monitors and adjusts the voltage level until a steady output is achieved.

The L7808ABV-DG linear voltage regulator also features overvoltage, overcurrent, and short circuit protection to ensure that the power supply remains safe and efficient in extreme conditions. It has fast transient response, low power consumption, and low stand-by current, further contributing to its overall energy efficiency. The output voltage can also be externally controlled via an external resistor.

Overall, the L7808ABV-DG linear voltage regulator from STMicroelectronics is a great solution for many power management applications. It is easy to use, efficient, and reliable, all of which makes it ideal for a variety of applications.

The specific data is subject to PDF, and the above content is for reference