MIC5309-1.8YMT-TR

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The MIC5309-1.8YMT-TR is a voltage regulator IC, which delivers low-noise, low-ripple voltage regulation particularly suited for precision analog and logic applications. It is classified as a linear voltage regulator part of the Power Management IC (PMIC) family. This regulator can be used in a wide range of applications, and offers the highest voltage regulation accuracy available in the market (for a relatively low cost).

The MIC5309 regulator integrates a low output noise, low-dropout linear regulator, a power FET, P-channel, an output voltage divider, an output voltage error amplifier, a soft-start circuit, a standby current regulator, and an adjustable current regulator. This single-chip solution eliminates the need for multiple discrete components and facilitates a more compact design.

This regulator is specifically designed to operate over a wide input voltage range. The low-voltage operation and the low-dropout feature results in improved efficiency and longer battery life in mobile applications. This regulator can deliver output currents up to 1A while maintaining superior power supply rejection ratio.

The 1.8V output voltage can be adjusted with the integrated adjustable ratiometric divider. This feature makes the MIC5309-1.8YMT-TR ideal for applications where a precision, adjustable voltage is required – for example, for use in a 3.3V-to-1.8V converter.

The MIC5309 also provides a wide variety of protection functions. It includes a high and low voltage input detector that can activate the shutdown circuit when the supply voltage is too low or too high, as well as providing a Thermal Shut Down (TSD) when the temperature of the device exceeds a preset threshold. This protection prevents the device from short circuiting, overloading, and overheating.

The internal current limiting circuit of the device provides maximum control over output current. The current limiter has a threshold that is adjustable, allowing the user to set their desired current limit. When the output current exceeds the threshold of the current limit, the current limit circuit shuts off the output and disables the device.

The MIC5309-1.8YMT-TR also features a low start-up current and an ultra-low shutdown current as low as 0.1uA. This allows for a wide range of applications, with the device able to remain in a ‘shutdown mode’ for extended periods of time, even when the battery is completely drained.

In addition, the MIC5309-1.8YMT-TR supports both Voltage Mode Control (VMC) and Pulse Width Modulated (PWM) control. VMC enables the tracking of the output voltage, while PWM enables the tracking of the output current. Both modes provide a fast and accurate control over the output voltage and current respectively.

Overall, the MIC5309-1.8YMT-TR is a versatile solution for low-noise, low-ripple voltage regulation requirements. Its wide range of features include a high voltage regulation accuracy, an adjustable output voltage, and a wide range of protections (including current limiting, high and low voltage input detector, and Thermal Shut Down). It is suited for a variety of applications, making it an ideal choice for any precision analog and logic application.

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