IRU1117CPTR

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The IRU1117CPTR, a member of Texas Instruments’ ultra-low dropout voltage regulator family, is a linear voltage regulator designed to convert a given input voltage into a regulated output voltage. Featuring high accuracy and low noise performance, the device is designed to provide the best power management solution in a given application field. This article provides an overview of its application field, the associated benefits and an insight into the working principle behind its performance.

Application Field

The IRU1117CPTR is a low dropout linear voltage regulator suitable for a wide range of applications. This includes but is not limited to wired communications, smart meters, network appliances, optical networks and set-top boxes. It is ideal for use in applications that require a highly accurate, low noise output voltage or in applications where power savings are of critical importance.

The device can provide an output voltage ranging from 1.2V to 3.3V with peak output currents up to 500mA. It is capable of operating under input voltages ranging from 1.5V to 10V and it is designed with a high power efficiency in order to ensure minimal power consumption. The device also features short-circuit protection and it is capable of operating at a temperature range of −40°C to +85°C.

Benefits

The IRU1117CPTR is designed to offer a high level of performance and reliability. Its low dropout voltage (typically only 0.7V at 500mA output current) allows the device to operate reliably over a wide range of input voltages. The high accuracy of the device ensures that the output voltage remains within a tight tolerance of ±2%. The fast transient response means that the device can quickly adjust its output voltage in order to maintain a constant and near-perfect regulated output.

The device is also able to offer a high ripple rejection. This results in a low noise output voltage that is ideal for applications such as communications, networking and multimedia. The device also features low output voltage noise, making it an ideal choice for applications that require a clean and consistent power supply.

Working Principle

The IRU1117CPTR is a P-Channel MOSFET linear voltage regulator. It operates by using a negative feedback loop to accurately control the output voltage. The feedback loop compares the actual output voltage to a reference voltage and adjusts the input voltage accordingly. The device is designed with an optimized quiescent current, which reduces the amount of power consumed as well as reducing the temperature of the device.

The device is also designed with a high power efficiency; the combination of its adapted on-resistance and optimized low dropout voltage ensures minimal power waste, resulting in a low power consumption that is ideal for applications requiring power savings.

The IRU1117CPTR is a low dropout linear voltage regulator, making it an ideal choice for applications requiring a low dropout voltage, low noise performance and a high power efficiency. Its wide input voltage range and high accuracy provides an effective and reliable power management solution for various applications.

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