NCP7905ACTG

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NCP7905ACTG is a highly integrated low-dropout, low-noise linear voltage regulator (LDO) feature with very low quiescent current and ultra-low dropout voltage that is specially built for low-power and portable consumer electronic devices. It is a versatile and cost-effective solution for power supply management in consumer electronic applications such as cell phones, PDAs, MP3 players, digital cameras, and portable medical devices. The NCP7905ACTG is ideally suited for powering display drivers and low-power applications.

The NCP7905ACTG is a low-input, low-noise, low-dropout (LDO) linear voltage regulator that can supply up to 500 mA output current and requires only a single external resistor for its output voltage setting. It offers a wide input voltage range of up to 12.6V and a low output noise of only 10 μVrms while operation in dropout mode. The device have internal short-circuit protection and over-temperature protection which are available to improve the system reliability. It also provide a low-current standby mode, in which the current is only a few μA, so it is suitable for battery-operated applications.

In terms of its application fields, the NCP7905ACTG is well suited for powering display drivers, low-power peripheral devices, and portable equipment in various consumer electronics applications. It is perfectly suited for devices which need low quiescent current and ultra-low dropout voltage with maximum performance, and has become a key component in many portable consumer electronic devices, such as smartphones, tablets, wearable devices, and gaming consoles. Furthermore, it is well suited for powering microcontroller and microprocessor-based systems and FPGAs as well as for driving DSPs and peripheral components.

The working principle of the NCP7905ACTG is quite simple and straightforward. It is based on the classic voltage regulator topology, in which an output voltage is provided by a series of linear resistors and an error amplifier. The output voltage is controlled by an internally set feedback voltage, which is set using the external resistor. When the output voltage decreases below the internally set feedback voltage, the error amplifier starts to pull the output voltage higher by increasing its output current. This increases the voltage at the output until it reaches the internally set feedback voltage. The feedback voltage is also referred to as the reference voltage and is usually set to 3.3V, 5V or 12V, depending on the application. Once the output voltage is set to the desired level, the error amplifier will maintain the output voltage and keep it at a constant level.

In conclusion, the NCP7905ACTG is a low-dropout, low-noise, low-power linear voltage regulator, which is ideal for powering display drivers, low-power and portable consumer electronic devices. Its wide input voltage range and low output noise make it an ideal and cost-effective solution for power supplies in such applications. It offers many features, such as internal short-circuit and over-temperature protection, and low-current standby mode, which are available to increase system reliability and make it suitable for battery operated applications. The device is based on the classic voltage regulator topology, in which an output voltage is provided by a series of linear resistors and an error amplifier, and the output voltage is regulated by an internally set feedback voltage.

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