IRU1010-18CD

IRU1010-18CD Application Field and Working Principle

The IRU1010-18CD is a monolithic integrated 10A PWM step-down DC/DC switcher. This switcher integrates an internal linear regulator, meaning that it provides an output voltage that is regulated fairly closely to the reference voltage. The IRU1010-18CD belongs in the family of PMIC (Power Management Integrated Circuits) Voltage Regulators and is a type of linear regulator.

A. Application Field of IRU1010-18CD

The IRU1010-18CD is a high-performance, cost effective, low power, monolithic integrated PWM step-down DC/DC switcher. It can be used as a voltage converter for a wide range of applications from 3.3V to 18V, including low-power converters, battery-powered products, DC-DC converters, and point-of-load products. The IRU1010-18CD is especially suitable for battery-powered systems with stringent requirements for power conversion efficiency. It works with an externally adjustable reference voltage and an adjustable output voltage.

B. Operating Principle

The operation of the IRU1010-18CD involves the control of an internal MOSFET switch that regulates the voltage output. It is based on a linear regulator topology, where the output voltage is regulated by controlling the amount of current that is being drawn from the input source.

The MOSFET switch is activated whenever the output voltage drops below a certain threshold. This helps to maintain the output voltage within a certain range. When the output voltage is too low, the switch will be activated, drawing current from the input source and raising the output back to the desired level. When the output voltage is too high, the switch will be turned off, preventing too much current to be drawn from the input source and thus putting a limit on the output voltage.

Since the switch only operates when necessary, it helps to reduce the power consumption and make the IRU1010-18CD a low-power switcher. In addition to its low power consumption, the IRU1010-18CD also has a fast transient response time and offers superior dynamic performance. These features make it a great choice for applications that require fast and reliable voltage regulation.

C. Features of IRU1010-18CD

The IRU1010-18CD has several features that make it an attractive choice for use as a DC/DC switcher. It is capable of delivering up to 10A of continuous current. It has an ultra-low operating current of 5mA and a very low shutdown current of 0.3mA. It also has a very short start-up time of less than 1µs and a high-efficiency of 95%.

Additionally, the IRU1010-18CD has built-in over-temperature, over-current, and under-voltage protection. This ensures safe operation and further enhances the reliability of the device.

The IRU1010-18CD can be used for a variety of applications from 3.3V to 18V, making it a versatile solution for a wide range of products.

Conclusion

The IRU1010-18CD is a monolithic integrated PWM step-down DC/DC switcher that belongs in the family of PMIC (Power Management Integrated Circuits) Voltage Regulators and is a type of linear regulator. This switcher is characterized by a short start-up time of 1µs and a high efficiency of 95%. It is suitable for a wide range of applications from 3.3V to 18V and is capable of delivering up to 10A of continuous current. Additionally, it has built-in over-temperature, over-current, and under-voltage protection. All these features make it a great choice for applications that require fast and reliable voltage regulation.