NCP81109DMNTXG

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NCP81109DMNTXG is a monolithic linear voltage regulator designed to boost the output voltage from a low supply rail and drive a switching regulator output stage. Its low quiescent current and wide input voltage range coupled with a P-channel FET output driver offers high power efficiency and low power consumption in a wide variety of applications. It is suitable for distributed power systems, battery-operated systems, consumer electronics, and automotive applications.

The NCP81109DMNTXG is a pulse width modulation (PWM) controller that offers high power efficiency and high power density. It is suitable for applications such as DC-DC buck converters, boost converters, and flyback converters. The device features an internal resistor-set circuit that enables the operating frequency to be highly adjustable within a range of frequencies. It also features an enable input and an output voltage PWM limit control logic that enables the current limit and the output voltage of the switching regulator to be easily set.

The NCP81109DMNTXG typically operates with a Vcc supply voltage of 6.5 to 16V and it can provide up to 8A of continuous load current. The device contains a built-in over-voltage protection that limits the output voltage to a maximum safe level and prevents damage if the device is exposed to excessive input voltage. The output voltage is user adjustable and is set via a resistor divider located between the FB pin and the DRAIN pin of the device.

The NCP81109DMNTXG operates with a fixed frequency of 500kHz, which provides a convenient PWM switching frequency for power stages that require high input impedance. The device has a PWM dimming port, which allows the dimming duration of the output switching period to be varied. It also contains a power-on reset circuit that ensures the device is in a stable point after power-up. Furthermore, it features an open loop start-up circuit for rapid regulator start-up and a short-circuit protection circuit that disconnects the output from the input voltage if the output voltage exceeds its safe limit.

The NCP81109DMNTXG is suitable for applications such as telecommunication equipment, monitoring and control systems, industrial automation systems, automotive systems and general-purpose power control applications. It can be used with inductors to generate a fixed output voltage for various loads over a wide range of input supply voltages. In addition, the device is capable of providing accurate output voltage regulation and efficient power conversion even at light load levels.

In summary, the NCP81109DMNTXG is a monolithic low power, high efficiency power management IC designed to provide an adjustable voltage output. Its high performance and low quiescent current make it ideal for a wide range of applications such as distributed power systems, battery-operated systems, consumer electronics and automotive systems. Its built-in protection circuits and PWM dimming port ensure reliable operation and efficient power conversion even at light load levels.

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