MIC5281-3.3YMM-TR

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The MIC5281-3.3YMM-TR is a voltage regulator in the Linear category of PMIC (Power Management ICs). It\'s an adjustable linear low-dropout regulator with a low quiescent current designed to supply 3.3 V to digital and analog circuits. It has a low dropout voltage between 210mV to 330mV and very low quiescent current of 15uA. The device also features excellent transient response, thermal protection, and current limit.

Application Fields

The MIC5281-3.3YMM-TR is used to regulate voltages in a wide variety of applications, such as automotive and industrial systems, consumer electronics, and telecommunications. It can be used in systems with limited output current and is typically used to provide low-power, stable outputs. It is also used to provide system resiliency in mission-critical systems by providing backup power sources. Furthermore, its low dropout voltage makes it excellent for use in battery-powered applications.

Working Principle

The MIC5281-3.3YMM-TR operates by dissipating excess energy in the form of heat whenever the load current exceeds the specified output current level. This energy is generated by the difference between the input voltage and the regulated output voltage, which is referred to as the “dropout” voltage. As the input voltage approaches the output voltage, the dropout voltage drops and so does the dissipated power. Hence, lower input voltages allow the device to maintain an output voltage over a wider range of input voltages.

The MIC5281-3.3YMM-TR usesan external resistor to program the output voltage, making it adjustable. By changing the external resistor value, the output voltage can be adjusted to the desired level. The device also has current limiting circuitry, which prevents the device from being damaged by excessive load currents.

In addition to providing protection against current overloads, the device is designed to protect against thermal overloads. It employs a thermal protection circuit that shuts down the output voltage if the device\'s temperature exceeds a certain threshold. This provides extra protection against damage due to high ambient temperatures.

The MIC5281-3.3YMM-TR is a highly effective voltage regulator for a variety of applications. Its low quiescent current, low dropout voltage, excellent transient response, and current limit protection make it well suited for use in portable and battery powered applications. Its adjustable output voltage, thermal protection, and current limit protection give it wide versatility for use in a range of systems. It is an ideal choice for automotive and industrial systems, consumer electronics and telecommunications.

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