KA7815AETU

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KA7815AETU is a three-terminal linear regulator with low dropout voltage and very low quiescent current. It is designed for applications such as multiple output digital equipment, data communications, and instrumentation, where noise performance and low total supply current are important.

The KA7815AETU is available in many different voltage range options(from 1.5V to 20V, typical) and includes both enable/disable and over-temperature sensing features. The device also offers output current capability up to 1.5A and a wide operating temperature range of -40 to +125 degrees Celsius.

KA7815AETU\'s control loop consists of an error amplifier, current limit, thermal shutdown circuits and a P-type output transistor. It utilizes two PMOSs to provide a fast and accurate current limit and thermal shutdown. The devices feature also include a power-on reset function and over-voltage protection.

The error amplifier acts as the voltage regulator\'s control circuit and is used to regulate the output voltage. The error amplifier senses the difference between the output voltage and the reference voltage, and adjusts the current through the output transistor to keep the output voltage regulated. The input voltage is then adjusted accordingly, to maintain the desired output voltage.

The current limit feature of the KA7815AETU prevents the output current from exceeding a predetermined safe level, ensuring that the device does not damage itself or the load. The device will turn off the load if the current limit is exceeded and will then slowly ramp up the current again. The thermal shutdown feature operates similarly, protecting the device from overheating in cases of large output currents or when operating under extreme temperatures.

The KA7815AETU offers excellent performance as a voltage regulator for most applications. Its low output voltage drop and very low quiescent current make it ideal for applications that require low noise, small size and energy efficiency. Its enable/disable and over-temperature sensing features provide enhanced safety and protection. Its power-on reset and over-voltage protection features further safeguard the device, making it suitable for use in a wide range of applications.

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