NCP3155ADR2G Integrated Circuits (ICs)

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NCP3155ADR2G voltage regulator is one of the most powerful switching regulators, specialized for battery powered and handheld applications. This device is a synchronous step-down DC-to-DC regulator, offering low noise and current consumption, while maintaining high efficiency. It includes an embedded high-voltage MOSFET, a current sense amplifier, a current sense resistor, an adjustable voltage regulator, a low quiescent current, and a power conversion I/O.

Application Field

The NCP3155ADR2G voltage regulator is ideal for battery-powered and handheld applications. Its low quiescent current, high efficiency and small footprint make the NCP3155ADR2G voltage regulator ideal for wireless audio and gaming systems, DC-to-DC converters, portable powe

The NCP3155ADR2G voltage regulator is suitable for applications such as notebook and laptop adapters, cameras, mobile phones, set-top boxes and DVD/blue-ray players. It is also used in applications such as radios, electric bicycles and motors, lifts, aerospace and defense, industrial and automotive systems.

Working Principle

The NCP3155ADR2G voltage regulator is a photovoltaic-type step-down DC-to-DC regulator that typically operates at 3.3 V and 5 V input. The input voltage is regulated by a constant voltage control loop with a voltage feedback network that regulates the output voltage. The output voltage is determined by the output voltage adjustment pin.

The NCP3155ADR2G voltage regulator features a high-performance current-sense amplifier and an adjustable current-sense resistor. The current-sense amplifier allows an external resistor to be adjusted for higher current-sense accuracy, and the adjustable current-sense resistor adapts the sense resistor for design optimization. The NCP3155ADR2G voltage regulator also features an output voltage select signal that allows different output voltages to be selected.

The NCP3155ADR2G voltage regulator utilizes a high-performance MOSFET and an adjustable voltage regulator. The MOSFET is used for power conversion, allowing for higher efficiency, low-noise operation and current consumption, and the adjustable voltage regulator also helps to improve efficiency.

In addition, the NCP3155ADR2G voltage regulator features a thermal protection circuit that will turn off the converter if the internal temperature exceeds its specified limit, thus protecting the device and its components. Lastly, the NCP3155ADR2G voltage regulator includes various protection features such as overload protection and under-voltage lockout protection.

In conclusion, the NCP3155ADR2G voltage regulator is a highly efficient, low-noise and low-power DC-to-DC regulator that is well suited for battery-powered and handheld applications. It is designed with a high-performance MOSFET, current sense amplifier and adjustable voltage regulator, providing improved efficiency, current consumption and noise reduction.

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