NCP1599MNTWG

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The NCP1599MNTWG is a high efficiency, monolithic, step-down DC-DC converter that incorporates an external MOSFET to offer a wide range of features. It features a fixed frequency, voltage mode PWM controller with a high-side current sense input, integrated power MOSFET, and integrated under-voltage lockout circuitry. Its modulation sequence eliminates glitches during transitions at the output and reduces switching losses, while keeping the required component count low. It has an operating junction temperature range of -40°C to 125°C.

The NCP1599MNTWG is ideal for applications such as portable electronic products, digital cameras, wireless base stations, gaming systems, and industrial power systems where high efficiency, low component count, and wide input range are needed. These applications are mainly in the industrial, automotive, and telecom electronics sector.

The NCP1599MNTWG is an example of a DC-DC Switching Regulator, and part of the larger Power Management ICs category. Switching regulators, also known as DC-DC converters, step down a higher voltage to a lower voltage and offer some of the highest efficiency power conversion available, with efficiencies up to 95%.

The NCP1599MNTWG works in step-down or buck converter mode. In buck converter mode, the input voltage is higher than the output voltage. An external N-channel power MOSFET driven by a high-side current sense input is used to control the inductor current. The power MOSFET is controlled by a fixed frequency, voltage mode PWM regulator with a programmable duty cycle. The PWM modulates the inductor current, which is transformed and regulated by a low-dropout linear regulator. This ensures a steady output voltage, even in the presence of load transients.

The NCP1599MNTWG contains a number of protection features such as Over-Voltage Lockout (OVP), Under-Voltage Lockout (UVLO), Thermal Shutdown (TSD), and Power Good Output (PGO). OVP prevents excessive voltage from being outputted, while UVLO protects the device from excessive input voltage conditions. The TSD feature protects the device from excessive operating temperature conditions and PGO provides an indication that the output has entered regulation.

Overall, the NCP1599MNTWG is a feature-rich, efficient DC-DC switching regulator that can be used in a variety of applications. Its highly-integrated design and protection features make it an ideal choice for a wide variety of industrial applications.

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