NCP81038AMNTWG

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The NCP81038AMNTWG is designed to be a high-performance regulator solution for a range of applications. It is a hybrid controller with linear plus switching (L+S) technology, providing efficient and cost-effective output regulation. The device operates on an input voltage range of 0.7V to 6V and offers an adjustable output voltage range of 0.7V to 5.5V. It also has very low quiescent supply current of only 14uA at light load and a low dropout voltage of 0.4V. The NCP81038AMNTWG is a highly integrated power management solution with a wide range of features and protections, including integrated protection and under-voltage lockout, built-in thermal shut-down, and a programmable output voltage. The device also features a low-noise Soft-Start and programmable slew rate. The NCP81038AMNTWG is available in a 5mmx6mm,14-pin WQFN package and is ideal for use in space-constrained systems such as mobile phones, tablets and other low-power consuming applications.

The NCP81038AMNTWG is a combination of linear and switched power regulators that work together to efficiently provide output regulation. The switching part is the step-down converter that regulates output voltage by controlling the duty cycle of the switch. The linear regulator eliminates the switching noise and provides low-noise and low-loss output regulation. This hybrid approach allows for high efficiency and low power dissipation over a broad range of load current and output voltages.

The linear regulator consists of two components: the reference voltage generator and the error amplifier. The reference voltage generator is designed to generate a 0.6V reference voltage. This reference voltage is then used by the error amplifier to compare the feedback voltage with the reference voltage. The difference between the two voltages determines the output current of the regulator, which is then fed back to the control loop. The output voltage is then adjusted as required to maintain the desired level.

The switched regulator uses an internal PMOS switch to generate a fixed current source. The switch is turned on and off using an internal oscillator. The current source is then used to regulate the output voltage by modulating the duty cycle of the switch. The duty cycle is proportional to the error voltage, which is determined by the difference between the feedback and reference voltages.

The NCP81038AMNTWG also has some key features including an adjustable voltage under-voltage lockout(UVLO) circuit, which helps to protect the system from damage due to input voltage spikes. The device also has integrated thermal shutdown and over temperature protection, as well as a low-noise Soft-Start and programmable slew rate. In addition, the device also offers an adjustable output voltage range of 0.7V to 5.5V with a high power conversion efficiency (up to 97%).

The NCP81038AMNTWG is an ideal solution for applications that require both linear and switching regulator outputs, such as mobile phones, tablets and other low-power consuming applications. It is available in a small 5mmx6mm, 14-pin WQFN package and offers a wide range of features and protections, making it an attractive option for space-constrained systems.

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