MAX6225AESA

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The MAX6225AESA is an adjustable voltage reference and family of low-dropout voltage regulators (LDOs) that are optimized for low noise and high power supply rejection ratio (PSRR). These devices have a wide output voltage range from 1.2V to 5.5V. They feature ultra-low operating voltage noise (1µVrms, typ) and high PSRR performance and are suitable for applications in battery-powered systems and other low-noise environments.

The MAX6225AESA integrates an adjustable voltage reference and an LDO regulator. The voltage reference can be adjusted to a wide output voltage range from 1.2V to 5.5V and is offered in three package options: a 6-pin SOT package, an 8-pin SOIC package, and a 16-pin QFN package. The LDO regulator features an adjustable output voltage, enabling design flexibility from 1.2V to 5.5V. The LDO voltage regulator has a dropout voltage of only 2.2mV and a low-battery detect voltage of 1.25V. It supports up to 650mA of output current, which is suitable for most applications.

The MAX6225AESA is designed to operate over a wide range of input voltages, from 3.2V to 6.5V. This enables users to design a wide range of applications with a single device, offering great design flexibility and cost savings. Furthermore, the device is designed with reverse current protection, overvoltage protection, and undervoltage lockout. Together with its low-power shutdown mode that draws less than 0.1µA of quiescent current, the device is ideal for battery-powered applications and further enhances power savings.

The operating principle of the MAX6225AESA is based on the use of an LDO and voltage reference. The voltage reference is a source of a known and stable voltage, generated by a voltage reference circuit. This circuit is connected to the input and output of the LDO regulator and forms the basis of the feedback control loop. The voltage reference allows the output voltage of the device to remain constant even if the input voltage or load on the device changes. The LDO regulator supplies the output voltage from the input voltage and the feedback from the reference circuit. The LDO regulator also limits the output current to a safe level and protects the device from any short-circuit or overload condition.

The MAX6225AESA is suitable for a wide range of applications, including portable consumer electronics, personal computing, cell phones, digital still cameras, camcorders, digital audio players, 3G base stations, and meters. Its low-noise and high PSRR performance is particularly well suited for use in battery-powered systems such as portable consumer electronics and personal computing. Furthermore, its versatile adjustable voltage range from 1.2V to 5.5V and its low quiescent current of less than 0.1µA in shutdown mode make it ideal for powering applications from a single portable battery.

The MAX6225AESA is a reliable, low-noise, and low-dropout voltage reference and LDO regulator device for a wide range of portable consumer electronics and personal computing applications. Its adjustable output voltage allows design flexibility, while its reverse current protection, overvoltage protection, and undervoltage lockout ensure device robustness and reliability. Its ultra-low operating voltage noise and high power supply rejection make it suitable for use in low-noise environments, while its low quiescent current enhances power savings. Together, these features make it an ideal solution for a variety of applications.

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