AN77L10

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The AN77L10 is a low power linear voltage regulator providing 5V and 0.3A output current. It is ideal for applications requiring accurate and low noise regulation, such as telecommunications, microcontrollers, networking, consumer electronics, and medical equipment. The AN77L10 is a low dropout linear voltage regulator, meaning that its output voltage is a relatively close approximation of the input voltage, even when the input voltage is only slightly higher than the output voltage.

The operating principle of the AN77L10 is simple. It includes a PNP transistor and an NPN transistor which are connected in a voltage divider configuration. When the input voltage is applied to the PNP transistors base, the two transistors form a closed loop from the input voltage to the output voltage. The PNP transistor conducts a current proportional to the input voltage, and the current flowing through the NPN transistor is related to both the input and output voltages. The total output current is equal to the sum of these two currents. This current is regulated by the voltage feedback loop.

The AN77L10 includes a number of over-voltage protection features to protect the device and connected components. These include protection against overvoltage, over-temperature, and reverse-bias conditions. The device also includes a soft start feature which allows it to gradually increase the current output as the input voltage rises, providing a smooth transition from startup to operation. In addition, the device is designed to provide excellent output noise rejection and a low dropout voltage for improved battery life. The device is available in a TO-220 package with a 2.8V to 13.2V input voltage range.

The AN77L10 is well suited for use in a variety of applications that require a low power, low noise voltage regulator. It is especially useful for applications where the input voltage is significantly higher than the output voltage, such as microcontrollers and telecommunications. In these applications, the device’s high accuracy and low dropout voltage capability make it ideal for providing high quality power regulation. The AN77L10 is reliable and has a long product life, making it a cost effective solution. Overall, the AN77L10 is an excellent low power linear voltage regulator suited for a variety of applications.

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