L7808ACD2T

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Introduction

The L7808ACD2T is a two terminal low drop out linear voltage regulator which provides adjustable output voltage. It is a positive voltage regulator of fixed voltage in the 2.5 V to 50 V range. The device can switch between a low noise fixed voltage or an adjustable voltage. It includes an adjustable electronic switch and a thermal cutoff that enables it to switch between the two settings with user control. It has a wide range of applications.

Applications

The L7808ACD2T regulator is used in a variety of applications, including:

• in automotive systems
• remote control units
• consumer electronics
• processor cores
• cellular phones
• portable electronic equipment
• lithium-ion battery monitors
• smoke detecting and fire alarm systems
• test and measurement systems
• medical applications

Working Principle

The basic working principle of the L7808ACD2T regulator is based on a band-gap voltage reference. The output voltage is compared to an internal voltage reference, and an error amplifier then amplifies the difference between these two voltages and produces an output signal. This signal is fed to an output transistor, which is controlled by the signal so that the output voltage remains constant.

The regulator has built-in current limits, which control the maximum output current of the device. When the output current reaches the preset value, the device shuts down in order to protect itself from damage. The thermal cutoff is also built in to protect the device from high temperature. The device is triggered when the temperature of the regulator reaches a certain level, and the output voltage is shut off.

The L7808ACD2T voltage regulator is easy to use and provides very good performance. It is capable of providing accurate and stable output voltage even in harsh environments. The device is well suited for use in low voltage circuits, making it a popular choice for many applications.

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