MAX8868EUK33+T

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The MAX8868EUK33+T is an advanced linear regulator from the PMIC (Power Management IC) series developed by Maxim Integrated. It has an integrated PMOS pass transistor for ultra-low noise, low dropout voltage, and fast transient response. It is designed for low-noise applications such as cellular phones, personal digital assistants (PDAs), and other portable handheld devices.

The MAX8868EUK33+T is preferred in applications such as ultra-low noise power supplies and local power delivery to critical components, where low dropout voltage and fast response time is of the upmost importance. It reduces system design complexity by eliminating the need for external components and features a maximum input voltage of 29V. It provides superior line and load Regulation, and good power supply rejection ratio (PSRR). Moreover, it has 4.5V to 28V adjustable output voltage, 2A guaranteed output current, and up to 57mV Dropout with no external components.

Working Principle

The MAX8868EUK33+T is a voltage tracking linear regulator powered by a PMOS pass transistor. Its architecture consists of two subsystems, one power supply module and one voltage regulation module. The power supply module is responsible for providing necessary power to the voltage regulation module. It is then the job of the voltage regulation module to regulate the output voltage, regardless of changes in the load or input voltage.

The MAX8868EUK33+T has an advanced high performance voltage regulation mode with a fast transient response, low dropout voltage and ultra-low noise. It utilizes the PMOS pass transistor in combination with an integrated reference voltage to regulate the output voltage. The voltage regulation module has an adaptive regulation loop with an output voltage that can be adjusted from 4.5V to 28V. In addition, the device has an inbuilt overload protection circuit that shuts down the output if current goes beyond a certain limit.

Application Field

The MAX8868EUK33+T is ideal for use in battery-powered applications that require ultra-low noise even in the presence of highly varying loads. Its high performance voltage linear regulation feature makes it suitable for applications such as cell phones, PDAs, digital cameras and other portable devices that need a reliable power source without any noise. It is also popular among designers as it eliminates a lot of complexities that arise due to multiple external components.

The MAX8868EUK33+T is ideal for cell phone main power supply and sub power supplies, digital cameras, PDAs, as well as other portable electronic devices. Any application where ultra-low noise DC power is required, and where space is limited and component count needs to be kept to a minimum, the MAX8868EUK33+T offers a reliable and convenient solution. It is particularly popular in battery-powered products due to its adaptive regulation loop that helps to maintain the output voltage even when the load is rapidly changing.

Conclusion

The MAX8868EUK33+T is an advanced voltage tracking linear regulator from the PMIC family. It is designed for ultra-low noise, low dropout voltage and fast transient response, making it suitable for battery-powered applications, especially cell phones, PDAs, and other portable devices. Its 4.5V to 28V adjustable output voltage, 2A guaranteed output current, and up to 57mV Dropout with no external components makes it ideal for output voltage stability, overload protection and component count reduction.

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