NCV1117DT33T5G

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NCV1117DT33T5G Application Field and Working Principle

The NCV1117DT33T5G is an adjustable linear low drop-out (LDO) regulator and is part of the NCV1117 family of voltage regulators manufactured by ON Semiconductor. The NCV1117DT33T5G is a great choice for battery powered and applications requiring low drop-out voltages with excellent transient response. These robust, low power regulators provide excellent thermal stability and low noise, with fast transient response times.

The NCV1117DT33T5G features a fixed output voltage of +3.3V with a typical initial accuracy of ±1 % and an adjustable output voltage range from +1.5V to +4V that can be adjusted via a control voltage input. The chip also has a low drop-out voltage of 70mV at 1A load. The device also has an adjustable line transient response which can be set to fast, medium, or slow, to maximize output voltage transient stability. The NCV1117DT33T5G also has an open-drain power-good output pin, which can be used to accurately monitor the output voltage.

Application Field

The NCV1117DT33T5G is ideal for use in a wide variety of applications, such as battery-powered systems, power conditioning systems, notebook PCs and other portable electronic devices, and DSP systems. It is particularly suited for applications that require low drop-out voltages and excellent transient response.

Working Principle

The regulator is able to maintain an accurate output voltage, regardless of load current and input voltage variations, due to its low drop-out voltage and fast transient response capabilities. The NCV1117DT33T5G features a wide input voltage range from +2.5V to +5.5V with a maximum output current of 2.5A. The device is protected against short-circuits and output over-currents by its current limit, thermal shutdown and power good functions.

A key feature of the NCV1117DT33T5G is its adjustable line transient response, which can be set to fast, medium, or slow, as set by the user. This feature allows the regulator to reduce output voltage transients, an important feature when providing power to high-speed digital circuitry. The device also has an adjustable output voltage range from +1.5V to +4V, which can be adjusted via a control voltage input.

The NCV1117DT33T5G has a power-good output pin, which can be used to monitor the output voltage of the regulator and warn the user if the voltage is not within acceptable limits. The device also has an open drain output for monitoring the output current and an enable pin, which allows the user to turn off the regulator if necessary.

In summary, the NCV1117DT33T5G is a very reliable and robust LDO regulator with an adjustable line transient response and adjustable output voltage range which makes it an excellent choice for applications that require low drop-out voltages and excellent transient response. The device also features a power-good output pin and full protection features, allowing the user to monitor and protect their system from external conditions.

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