IRU1150CSTR

Current - Output:	4A
Base Part Number:	IRU1150CS
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 125°C
Protection Features:	Over Current, Over Temperature
Control Features:	--
PSRR:	70dB (120Hz)
Current - Quiescent (Iq):	10mA
Series:	--
Voltage Dropout (Max):	1.2V @ 4A
Voltage - Output (Max):	5.5V
Voltage - Output (Min/Fixed):	1.25V
Voltage - Input (Max):	7V
Number of Regulators:	1
Output Type:	Adjustable
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction

PMIC - Voltage Regulators - Linear are the most popular of the Power Management Integrated Circuits (PMICs) family. They are designed to provide precision voltage regulation from a DC power supply to a system load. The IRU1150CSTR is a linear voltage regulator specifically designed for circuits requiring high accuracy and low noise operation. It is a triple output, 3 amp PWM and low drop out regulator.

IRU1150CSTR Specifications and Features

The IRU1150CSTR has a triple output design configuration of a 5V, 3.3V, and 2.5V output. It has an output current of 3 amps, and a PWM mode regulator to optimally utilize a given supply output voltage. The IRU1150CSTR also provides over-voltage protection, under-voltage protection, short circuit protection, over temperature protection, and an over current protection.The IRU1150CSTR features precise voltage regulation, low noise operation and high efficient power management. It features a wide input voltage range from 4.5V to 28V, making it suitable for a variety of applications. The IRU1150CSTR also has a fast transient response for load sequencing and load transient ramping.

Applications of the IRU1150CSTR

The IRU1150CSTR is suitable for a variety of applications such as in industrial, medical, consumer, and automotive industries. This voltage regulator is used in distributed power systems and small portable equipment. It is also used in microcontroller-based systems to provide power supply noise isolation, over-voltage and under-voltage protection, as well as voltage level shifting.The IRU1150CSTR is ideal for supply voltage sensing in battery-powered systems and automotive applications. It is also ideal for powering audio amplifiers, LCD displays, CPUs, and other energy-sensitive systems.

Working Principle of IRU1150CSTR

The IRU1150CSTR is a linear voltage regulator which is capable of providing accurate and stable output voltages. It is designed to draw the voltage from an external power source, and then provide a regulated output voltage. In order to provide a regulated output voltage, the IRU1150CSTR utilizes an internal error amplifier and a reference voltage.The error amplifier is a differential amplifier which compares the load voltage on the output with the reference voltage. The difference between the output voltage and reference voltage is then fed back to the error amplifier and is used to control the internal MOSFET switch. The MOSFET switch continuously regulates the output voltage by adjusting the duty cycle of the PWM signal.The IRU1150CSTR also features over current and short circuit protection, over-voltage protection, under-voltage protection, and over temperature protection. The over current and short circuit protection senses the current and stops the PWM signal in case the current gets over a certain limit. The over-voltage protection senses when the output voltage reaches its maximum level, and shuts off the PWM signal to protect the device from damage. The under-voltage protection senses when the output voltage reaches its minimum level, and shuts off the PWM signal permanently to protect the device from damage. Lastly, the over temperature protection shuts off the PWM signal in case the heat generated by the device gets over a certain temperature limit.

Conclusion

In conclusion, the IRU1150CSTR is a linear voltage regulator designed to provide precision voltage regulation from a DC power supply to a system load. It offers the features of a triple output, 3 amp PWM, and low drop out regulator. It also features precise voltage regulation, low noise operation and high efficient power management. The IRU1150CSTR can be used in a variety of applications and is suitable for distributed power systems and small portable equipment. It also offers over current, short circuit protection, over-voltage protection, under-voltage protection, and over temperature protection.

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