IRU1117-18CPTR

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IRU1117-18CPTR Application Field and Working Principle

The IRU1117-18CPTR series are *Linear Voltage Regulators* that provide a cost-effective drop-in solution as opposed to discrete alternatives for voltage control in various types of applications.

This voltage regulator series is a 1500mA positive LDO regulator which supports a wide input voltage range of 4.5V to 18V. Its output is fully adjustable and can be set between 1.2V and 17V. OVP, OCP and SCP protection features also make this series suitable for applications that require reliable voltage regulation.

Part Description

The IRU1117-18CPTR is a monolithic linear voltage regulator that offers a cost-effective way to regulate and control input voltages into the target application. It contains an ultra-low-noise bipolar transistor and an accurate voltage reference, providing exceptionally low-noise operation. The device can operate in one of two modes: fixed output or variable output. The output voltage is preset at a nominal value, or can be adjusted between 1.2V and 17V.

The device also offers built-in protection features such as overvoltage protection (OVP) which shuts down the regulator output in response to an overvoltage condition at the output, and overcurrent protection (OCP) which sends a signal to the regulator\'s shutdown pin when the output current exceeds the predetermined safe level.

The device also offers short-circuit protection (SCP), which protects the device\'s internal circuitry from high currents, and thermal protection (TEMP), which prevents the IC from overheating and short-circuiting.

Working Principle

The IRU1117-18CPTR contains an on-chip voltage reference and error amplifier. The voltage reference generates a stable reference point for the error amplifier, which compares the reference voltage to the voltage at the output of the regulator. If the error amplifier detects a difference between the reference voltage and the output voltage, it sends a signal to the gate of the regulating transistor and the output voltage is adjusted accordingly. The current through the regulating transistor is then adjusted so that the desired output voltage is maintained.

The device can be operated in either fixed or adjustable output voltage modes. In the fixed mode, the output voltage is preset at a nominal value, while in adjustable mode, the output voltage is adjustable between 1.2V and 17V.

Application Field

The IRU1117-18CPTR is suitable for use in a wide range of applications, including power supplies, battery-powered devices, consumer electronics, and automotive applications. Its 1500mA output current rating makes it suitable for most applications, and its adjustable output voltage, low power consumption and small footprints make it well-suited for low-power designs where space is limited. The device\'s built-in protection features, including OVP, OCP, and SCP, make it an ideal choice for applications that require reliable voltage regulation.

The IRU1117-18CPTR can also be used as a voltage reference in a variety of sensor and control circuits, as well as in audio and video circuits. Its output pin can be used to provide a reference voltage for the control of LED indicator brightness and LCD backlighting. It can also be used in precision comparators, power supply supervisors, and voltage level shifters.

The IRU1117-18CPTR series is an ideal choice for cost-effective voltage control and regulation in a variety of applications.

IRU1117-18CPTR series are *Linear Voltage Regulators*, which are part of PMIC (Power Management Integrated Circuit) and provide cost-effective voltage control solution in various types of applications. It contains an ultra-low-noise bipolar transistor, a reference voltage and various integrated protection features such as OVP, OCP and SCP. It can be used in a wide range of applications, including power supply, battery-powered devices, consumer electronics, automotive applications, LED indicator brightness and LCD backlighting control, and comparators and power supply supervision. It is an ideal choice for reliable voltage regulation and cost-efficiency.

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