AS7805AT-G1

The AS7805AT-G1 linear voltage regulator (LVR) is a convenient, easy-to-use, flexible, and reliable solution for cost-sensitive applications. It offers features such as wide input and output voltage options, low RDS (on) selectable over-current protection and soft start. The LVR is Pb-free and RoHS compliant and comes packaged in the popular and convenient SOT-23-5 package. The AS7805AT-G1 voltage regulator is a perfect solution for managing voltages from 1.8V up to 15V. It is one of the smallest voltage regulators in the world and can fit into tight spaces and meets tight design requirements. The LVR is designed for use in automotive, portable, wireless, and industrial applications. The AS7805AT-G1 LVR has a wide operating temperature range from -40°C to +85°C and is ideal for a variety of high reliability applications. It is also very useful when power supply voltage is difficult to regulate or in harsh environments where hot spots can occur due to voltage variations.

Working Principle

The working principle of the AS7805AT-G1 is simple and straightforward. It is an externally controlled linear voltage regulator and works on the same principle as a typical linear voltage regulator. It uses an external resistive divider to set the output voltage and then uses an error amplifier to compare the output voltage (Vout) with the reference voltage (Vref). When the two voltage values differ, the error amplifier will activate either the N-channel MOSFET or the P-channel MOSFET, depending on which one will better help lower the output voltage. This in turn will cause the voltage regulator to reduce or increase the output voltage until it reaches the reference voltage. Once the reference voltage is reached, the voltage regulator will remain in a state of regulation.

Application Field

The AS7805AT-G1 is an excellent choice when it comes to applications such as small, low-noise power systems, DC-DC converters, portable equipment, automotive and industrial applications. It offers the user a wide selection of input and output voltage ranges, low RDS (on), and selectable over-current protection that make it flexible and reliable for cost-sensitive applications.

The AS7805AT-G1 is especially useful for applications that require accurate and stable output voltages. It can effectively reduce output voltage ripple and provide current limiting/short-circuit protection. It is perfect for applications in which low power consumption is critical, as it operates on just a few millivolts of differential control. It also has a low minimum operating current of less than 20mA, making it ideal for low-power applications.

In summary, the AS7805AT-G1 is an efficient, cost-effective, and reliable linear voltage regulator solution for a variety of applications. Its features, including easy external control and adjustable output current, make it convenient and versatile. Its small package size and wide operating temperature range make it suitable for use in a variety of industrial and automotive applications. Its low power consumption and high efficiency make it an ideal choice for portable, low-noise power systems.