KA278R33CYDTU

Introduction

KA278R33CYDTU is an advanced linear voltage regulator with a wide range of applications. It is designed with a simple asynchronous, self-contained, adjustable output voltage regulator and a specialized power-saving control circuit. Its operating voltage range is from 3V to 33V. It is equipped with an automatic protection function, which can be triggered if the input voltage is too low or if the current exceeds the load set by the user. This device is ideal for systems with limited space requirements that need to use extremely low power, even when the supply voltage is rising and the load current is changing.

Application Field

The KA278R33CYDTU regulator can be used in numerous applications such as consumer electronics, industrial systems, desktop and laptop PCs, communications equipment, test and measurement systems, automotive systems and remote sensors. It can provide power for linear regulator applications such as low noise audio, RF amplifiers and sensitive instrumentation. Additionally, it can be used to regulate power in industrial grade power supplies and analog circuits. It is especially suitable for applications that require low noise, high EMI performance and minimal power dissipation.

In addition to stabilizing the voltage, the device can also be used to control the temperature of the load with the adjustable current limit and power saving control circuit, making it suitable for applications where temperature is a critical factor. Moreover, its extremely low quiescent current and low dropout enable it to work on very low voltages with minimal power consumption, making it particularly suitable for battery powered systems.

Working Principle

KA278R33CYDTU works on the principle of voltage regulation. It utilizes a negative feedback loop between the output voltage and the reference voltage to regulate the output voltage. The output voltage is regulated by first comparing the reference voltage to the output voltage and then adjusting the control voltage on the regulator output to obtain good voltage regulation. This control voltage then modulates the current through the pass transistor, thus regulating the output voltage. The device automatically regulates the output voltage regardless of the output current and load condition, making it ideal for a wide range of Voltage Regulation applications.

In order to reduce the power consumption, KA278R33CYDTU is designed with a specialized power saving control circuit, which is implemented by two independent voltage reference comparators with adjustable hysteresis. This eliminates the need of an additional voltage sensor on the output line, reducing the power consumption and improving the efficiency. Moreover, it is equipped with an input voltage protection circuit to protect the device from current overloading by detecting the input voltage and automatically shutting down when the input voltage is too low.

Conclusion

The KA278R33CYDTU is an advanced linear voltage regulator with a wide range of applications. It is optimized for ultra-low power consumption when the supply voltage is rising, making it ideal for battery powered systems. It has an adjustable current limit and power saving control for temperature control applications and a protective input voltage protection to protect the device from current overloading. This device is well suited for linear regulator applications requiring low noise, high EMI performance and minimal power dissipation.