NCP301HSN27T1G Integrated Circuits (ICs)

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The NCP301HSN27T1G is a member of the supervisory family by ON Semiconductor. It is a single, ultra low-power, advanced reset IC with a highly accurate internal voltage reference and high speed operation. It is designed to keep the microcontroller or microprocessor in a steady state during power up, power down, and fault conditions.

Overview

The NCP301HSN27T1G has an input voltage range from 1.2V to 5.5V and is capable of supporting a variety of microcontroller families. It monitors multiple power supplies and provides a highly accurate reset signal at the microcontroller when the voltage drops below a preset value. It also monitors power Rails like I/O, Core, and several other supply rails. The NCP301HSN27T1G also has a low operating current of 5µA.

Features

The NCP301HSN27T1G offers a number of features, including:

• No Shutdown Factor: The NCP301HSN27T1G does not require a shutdown signal to be enabled, allowing it to stay active even if the power supply is not present.
• Low Active Current: The device has a very low active current (5µA) making it suitable for applications with battery-powered devices.
• High Accuracy Voltage Reference: The device provides a stable and accurate voltage reference (1.25V ±1%) suitable for monitoring a variety of power supplies.
• Compact Package: The device is available in a small SOT-23-6 package suitable for space-limited applications.
• Selectable Time Delay: The device allows adjustable time delay settings to be set by an external resistor.

Applications

The NCP301HSN27T1G is suitable for use in a variety of application fields such as:

• Automotive: Automotive power management, including power supplies, battery management, on- board diagnostics, etc.
• Industrial: Industrial control systems, industrial automation, factory automation, and process automation.
• Consumer Electronics: Battery-operated consumer products, such as digital cameras, cell phones, PDAs, etc.
• Telecommunications: Telecommunications, including power supplies, network control systems, UPS, etc.
• Computing Systems: Embedded controller systems, personal computers, network servers, etc.

Working Principle

The working principle of the NCP301HSN27T1G can be described as follows:

• The device monitors the power supply for sudden drops in voltage.
• Once the voltage drops below the preset value, the device sends a high-accuracy reset signal to the microprocessor.
• The device then monitors the reset signal for the microprocessor and keeps it in steady state until the voltage returns to the preset level.
• Once the voltage rises above the preset level, the device sends a reset signal to the microprocessor to restart its operations.

The NCP301HSN27T1G is a highly reliable device that can help keep the microprocessor in a steady state during power up, power down, and fault conditions. The device is also suitable for applications with battery-powered devices due to its low active current. The various adjustable delay settings also provide flexibility in design.

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