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PMIC – Voltage Regulators – Linear

Voltage Regulators are important chip-level devices used to control the voltage supplied to the circuit. They are used in a wide range of applications, from controlling the speed of a CPU to sustaining a clean energy source. Linear voltage regulators, in particular, are a common type of voltage regulator used in many different applications. In this document, we will discuss the EY1601SA-ADJ linear regulator and its application field and working principle.

Overview of EY1601SA-ADJ Linear Regulators

The EY1601SA-ADJ is a low dropout linear voltage regulator manufactured by Blackstone Technology Group. It is a single output regulator with adjustable output voltage and a wide input voltage range. The EY1601SA-ADJ can deliver up to 500mA of output current with an input voltage between 4.5V and 28V, and up to 3.3V at its output.

This linear regulator has excellent thermal performance with a typical junction-to-case thermal resistance of 2.5°C/W. It also features low noise, low quiescent current, and high PSRR (Power Supply Ripple Rejection) characteristics, making it suitable for use in high PSRR accuracy-demanding applications such as digital audio, video and peripherals.

Application Field of EY1601SA-ADJ Linear Regulators

The adjustable output voltage and wide input voltage range of the EY1601SA-ADJ make it a suitable power supply for a variety of applications, especially those that require low dropout voltage and low power consumptions. It can be used to power microprocessors and logic circuits, as well as PoE (power over Ethernet) applications, communication boards and Bluetooth applications.

The EY1601SA-ADJ is also well-suited for use in automotive applications, where it is used to provide stable power supply at high temperatures, since it can operate over a wide input voltage range of 2.5V to 28V. Additionally, the excellent PSRR characteristics make it perfect for applications such as handheld instrumentation, and powering audio-visual equipment.

Working Principle of EY1601SA-ADJ Linear Regulators

The basic principle of operation of a linear regulator is to maintain a fixed steady voltage output, regardless of the fluctuating input voltage or load. This is done by using a control circuit to compare the output voltage to a reference voltage, and adjust the power supply accordingly.

The EY1601SA-ADJ linear regulator, in particular, works by using an on-chip voltage reference and error amplifier to compare the output voltage to the reference. The output voltage is then adjusted by turning the supply “on” or “off”, depending on the difference between the reference voltage and the output voltage.

This linear regulator also features a low quiescent current to maintain a lower self-discharge rate and reduce power consumption. In addition, the low-dropout-voltage feature of the EY1601SA-ADJ allows it to operate at a lower voltage than the input voltage, and thus reduce power loss.

Conclusion

The EY1601SA-ADJ linear regulator from Blackstone Technology Group is a versatile device, suitable for a variety of different applications. Its adjustable output voltage, low dropout voltage, low quiescent current and high PSRR characteristics make it particularly suitable for powering digital audio, video and peripherals, handheld instrumentation, and automotive applications. Additionally, its basic operating principle is based on comparing the output voltage to a reference voltage and adjusting the power supply accordingly, making it efficient and reliable.

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