NCP4303AMNTWG

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The NCP4303AMNTWG is a member of ON Semiconductor’s Automotive PMIC - Power Supply Controllers, Monitors and Drivers family. The NCP4303AMNTWG device is an adaptive mode controller for DC/DC converters. It integrates a PWM-compatible low side MOSFET gate driver, pulse-by-pulse current control, soft start charge pump, internal voltage regulation, and adaptive loop control, together with comprehensive fault protection features in a small SO-8 package. This device is especially well-suited for digital core supplies, systems with high current steps, or applications requiring fast transient response.

The NCP4303AMNTWG is a highly integrated PMIC which is capable of aggressively managing transient load steps while simultaneously providing system monitoring and fault protection capabilities. Its adaptive loop and programmable compensation technology enables it to maintain the output voltage precisely while responding rapidly to dynamic load events. This device provides excellent line and load regulation, fast transient response and superior EMI performance. The integral high side MOSFET driver allows for increased performance, efficiency, system configuration flexibility and less complexity.

The NCP4303AMNTWG is well-suited for automotive, industrial, and consumer applications which require an accurate, stable and regulated output voltage while being able to quickly respond to transient load events.The NCP4303AMNTWG device\'s working principle is to control a step-down DC/DC converter operating in continuous conduction mode. The device includes a low side driver for a power MOSFET for controlling the output of the converter. The device has adaptive features that ensure fast transient response and accurate regulation of the output voltage. The output voltage accuracy is typically maintained within 1%. The device also has a pulse-by-pulse current limit control and an adaptive loop for controlling the emulation of the inductor current. The device includes features to ensure a defined soft start-up and to protect against over-current and over-temperature conditions.

The integrated pulse-by-pulse current limit control achieves fast response and improved efficiency compared to traditional resistor sensing techniques. Additionally, the device supports different operating modes and output voltage trim-ability. The NCP4303AMNTWG device\'s wide supply voltage ranges, internal voltage regulators and over-voltage protection make it suitable for harsh automotive environments.

The device integrates several sophisticated featuresincluding frequency dithering, current limit protection, short-circuit protection, over-voltage protection, low battery disconnection, and thermal protection for enhanced system reliability and robustness. The device also includes an adjustable SS/TRK pin to optimize output voltage stability and transient response, thereby reduce design time and components. It supports a true logic lossless interlock output that provides synchronization with other converters in the system.

In conclusion, the NCP4303AMNTWG device is a highly integrated PMIC family with features that ensure precise, stable and regulated output voltage while being able to respond quickly to transient load events. Its adaptive loop and programmable compensation technology enables it to maintain the output voltage precisely while responding rapidly to dynamic load events. The integrated pulse-by-pulse current limit control achieves fast response and improved efficiency compared to traditional resistor sensing techniques and the device also support different operating modes and output voltage trim-ability. Additionally, the device also includes many sophisticated fault protection features, making it suitable for automotive, industrial, and consumer applications.

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