NCP1117STAT3

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The NCP1117ST33 is a high-performance, cost-effective voltage regulator, developed by ONSemiconductor, that provides extended temperature range, high accuracy output and excellent line/load regulation for demanding applications. It features a low input voltage range of 0.8V to 13V, and a wide output voltage range from 0.8V to 10V. The device can operate over a temperature range of -40 to 105 °C, and has a built-in over temperature protection feature.

Device Usage

The NCP1117ST33 is ideal for use in distributed power systems and for applications requiring a high current load, such as industrial/consumer electronics, lighting systems, and automotive applications. It also has a wide range of applications in wireless communications, instrumentation equipment, power supply design, and other high reliability applications. The device is used in portable computers, set top boxes, LCD TVs, digital cameras, modems, routers, and many other applications.

Working Principle

The device works by utilizing an adjustable voltage reference, feedback control loop, pass transistor, and voltage divider to regulate the output voltage of a system. When the output voltage is lower than desired, the feedback control loop increases the voltage reference and the load current, causing the voltage divider to reduce the output voltage. The pass transistor controls the flow of current to the load, while the feedback control loop regulates the output voltage to the desired value.

To maintain a stable output voltage, the NCP1117ST33 uses a voltage reference, feedback control loop, pass transistor, and voltage divider. The device also has a built-in current limit and thermal shutoff feature that helps protect the device from overcurrent and overheating conditions.

The device\'s feedback loop is used to maintain the output voltage by utilizing a voltage reference and a pass transistor to control the flow of current to the load. It features a start up delay for initializing the output voltage and is also highly configurable with various operating modes, such a pulsating mode, continuous mode, and sleep mode. The device can also be used to achieve high accuracy regulation with extremely low dropout voltage and low quiescent current.

Advantages

The NCP1117ST33 has a wide input voltage range from 0.8V to 13V and can handle up to 1A of load current. It also has a high output accuracy with a ±2% tolerance, and an operating temperature range of -40 to 105°C. In addition, it has a low dropout voltage when operating at low load currents, eliminating the need for an external heat sink. The device also features a built-in over temperature protection, current limit and sleep mode to protect the device from over current and overheat conditions.

The NCP1117ST33 is ideal for applications requiring a low dropout voltage regulator with improved accuracy and extended temperature range. Its wide input and output voltage ranges, low quiescent current and high accuracy mean that this device is suitable for a wide range of applications, from industrial/consumer electronics, to lighting systems, automotive, and other high reliability applications.

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