ISL21009BFB850ZS2568

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PMIC (Power Management Integrated Circuit) is a form of integrated circuits that specializes in managing electric power requirements in electronic devices. Voltage Reference is one type of PMIC, which is used to produce a stable reference derived from a power supply. The ISL21009BFB850ZS2568 is a voltage reference IC that can be used in various applications. This article will provide an overview on the application field and working principle of ISL21009BFB850ZS2568.

Application Field of ISL21009BFB850ZS2568

ISL21009BFB850ZS2568 is a low dropout (LDO) voltage reference IC with a typical performance of 0.2% initial accuracy and line regulation of 0.1% over a voltage range of 1.3V to 16V. It is designed for applications requiring low noise and stable voltage sources for precision analog circuits such as op-amps and data converters. Examples of such applications include high-resolution ADCs, voltage references, auto-zero amplifiers, and buffered voltage dividers. The IC is also suitable for parallel operation, so it can be used in multiple voltage applications such as motor control, medical imaging, and instrumentation.

Working Principle

The ISL21009BFB850ZS2568 is a voltage reference IC that consists of a reference voltage buffer and a linear voltage regulator. The reference voltage buffer consists of a PMOS pass device, a PNP feedback switch and a resistor divider. The output voltage (Vout) is regulated by the voltage drop across the PMOS device, which is then amplified and buffered by the PNP feedback switch and resistor divider. The linear voltage regulator consists of an NPN differential amplifier, a series pass device, a bias network, an output amplifier and two current sensing resistors. The differential amplifier is used to compare the input voltage (Vin) and the output voltage (Vout). The output amplifier is then used to control the series pass device, which regulates the input voltage by adjusting the drop across the series pass device. The bias network is used to ensure that the output voltage remains constant even when the output current changes.

Overall, ISL21009BFB850ZS2568 is a versatile voltage reference IC that can be used in various applications requiring low noise and stable voltage sources. Its 0.2% initial accuracy and 0.1% line regulation make it ideal for precision analog circuitry. Moreover, the IC is also suitable for parallel operation, enabling it to be used in multiple voltage applications. With its wide range of features and performance, ISL21009BFB850ZS2568 is an ideal choice for a variety of applications.

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