NCP81103AMNTXG

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The NCP81103AMNTXG is a PMIC (Power Management IC) that is part of the Voltage Regulators group of DC DC Switching Controllers. It is a three-terminal, step-down DC-DC switching controller with shutdown, tracking, and soft-start functions.

The NCP81103AMNTXG was designed as a cost-effective solution for power distribution systems such as laptop computers, mobile handsets and storage devices. The low on-resistance, wide operating frequency range, and high accuracy allow for greater design flexibility and higher efficiency. In addition, the device has a built-in POR (power-on reset) which provides reliable operation in unstable environments. With its high efficiency, the NCP81103AMNTXG can be used in applications such as general-purpose power supplies, battery charging systems, and automotive applications.

The working principle of the NCP81103AMNTXG is based on the Pulse Width Modulation (PWM) control. The device uses an internal oscillator, which generates a clock with a frequency of up to 1MHz. This oscillator is used to control the pulse width of an internal switch, which, in turn, controls the output voltage of the device. The device also features a low-side current sensing circuit, which regulates the PWM duty cycle and ensures that the output voltage is kept within predetermined limits.

The NCP81103AMNTXG features features several integrated safety features designed to protect the device and its associated components. These include an under-voltage lockout (UVLO) function, which prevents the output voltage from dropping below the desired level and an Over-Current Protection (OCP) circuit, which limits the output current to a safe level. Additionally, the device features thermal shutdown, soft-start and short circuit protection, ensuring the safety and reliability of the device.

The NCP81103AMNTXG is a highly efficient, low on-resistance switching controller with many integrated safety features. It is well suited for applications such as power distribution systems, general-purpose power supplies, battery charging systems, and automotive applications. With its integrated POR and protection circuits, it ensures reliable operation even in unstable environments.

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