NCP102SNT1G Integrated Circuits (ICs)

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NCP102SNT1G, a linear regulator controller from ON Semiconductor, is a positive voltage regulator designed for use in features-rich consumer electronics applications and Point-of-Load (POL) architectures. It offers a low-cost, single-valued solution for power supply designs that require high-accuracy with precision current-limit protection, fast load transient response, and low power loss.

The NCP102SNT1G provides high-efficiency and accurate voltage regulation with low power consumption over a wide range of input and output voltages. It incorporates a 3A Buck Switch Integrated Driver (ISL) to drive the external N-channel, low side, or charge pump MOSFETs and offers high-accuracy line and load regulation, making it a suitable controller for high output current applications.

The NCP102SNT1G is featured by

• Low supply current
• Digital dimming capability
• Output voltage tracking
• Fast response time
• Adjustable gate drive
• Programmable feedback voltage
• Input Under Voltage Lockout (UVLO)

Application Field and Working Principle

The NCP102SNT1G is a simple, low-cost voltage regulator suitable for consumer applications such as phones, tablets, laptops, power banks, LED lighting, and other consumer-facing products. It offers a single solution for power supplies with high current output and precision current-limit protection.

The main function of the NCP102SNT1G is to regulate the output voltage of a power supply to a desired level. The application field of this device consists of consumer electronics, communication, automotive, industrial and medical applications. The device\'s output voltage is adjustable and proportional to the reference voltage supplied to it. The output voltage accuracy is +/-2.5%. The device also has overvoltage, overcurrent and over-temperature protections.

The NCP102SNT1G features a regulated current-mode control topology that drives an external N-channel MOSFET switch. It operates by converting the input voltage to a current that is proportional to the external load current then comparing it to the reference voltage. The current-mode control ensures low output ripple, fast transient response and high loop gain for robust light load performance. The device also features digital dimming capability allowing it to be used in applications where the output voltage needs to be dynamically controlled.

The NCP102SNT1G offers multiple protection features such as input under-voltage lockout (UVLO) to prevent the device from turning on at inappropriate voltages, over-temperature shutdown to protect against dangerous operating conditions, over-current protection to ensure the load current does not exceed a specific threshold and over-voltage protection to prevent the output voltage from reaching dangerous levels.

The NCP102SNT1G is an ideal solution for designs that require high-accuracy voltage regulation and fast transient response with low power loss. Its features and protection make it a suitable choice for high current applications in consumer electronics, communication, automotive, industrial, and medical applications.

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