AN79L18ME1

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The AN79L18ME1 is a low dropout linear regulator that is designed with an emphasis on power supply design, system performance, and cost. It is a three-channel fixed voltage regulator with two adjustable and one fixed output voltage. It can provide output voltages of 1.8V to 5.5V, and it\'s designed to provide a supply current of up to 500mA. In addition to the stable output voltage and low drop-out voltage, the AN79L18ME1 also features excellent EMI, transient response, and low noise performance. The device is suitable for all types of switching, linear, and signaling power supplies.

The AN79L18ME1 is an ideal solution for power systems that require low-dropout, improved transient response, and high EMI immunity. It is used in a wide variety of applications such as industrial power supplies, TV/ receiver systems, automotive systems, and battery-powered equipment. It can also be used in portable computing and communications devices.

The AN79L18ME1 is a three-channel linear regulator that operates over a wide input range of 4.75 to 15V. It has two adjustable output voltages (1.8 to 5.5V) and one fixed voltage (5V). The device has a very low dropout voltage of typically 0.1V and a maximum supply current of 500mA. Its low quiescent current of 22mA and low dropout voltage make it ideal for battery-powered applications. It also provides excellent transient response and excellent EMI suppression.

The working principle of the AN79L18ME1 is based on the classic series voltage regulator circuit. It consists of an NPN pass transistor, resistors and a pair of zener diodes. The pass transistor is controlled by the voltage on a control pin and adjusts the output voltage based on the input voltage and reference voltage. The reference voltage is fixed and can be externally adjusted with a resistor divider. The control pin voltage is derived from the output voltage. When the output voltage is at the desired level, the output voltage is regulated by the pass transistor to keep it constant.

The AN79L18ME1 is the perfect choice for low dropout, low noise, and fast transient response applications. It is ideal for industrial, consumer electronics, automotive, and other portable applications where tight regulation and low noise are required. Additionally, its wide input voltage range, low dropout voltage, and excellent EMI suppression make it a perfect choice for power supplies in TV/ receiver systems, industrial control systems, and many other applications.

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