MIC37151-3.3BR TR

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The MIC37151-3.3BR TR belongs to the category of PMIC - Voltage Regulators - Linear and is a 3A low dropout (LDO) voltage regulator that delivers up to 3A of output current. This device is designed to provide the low dropout voltage and higher output current requirements of microprocessor core voltages in many different applications. Its low dropout voltage, minimal output noise, and adjustable current limit are essential characteristics for today’s applications.

Application Field

The MIC37151-3.3BR TR is used in a wide variety of applications, including high voltage and low voltage telecommunications equipment, consumer electronics, industrial automation and process control equipment, power supplies, automotive applications, computer peripherals, and other DC-DC converter designs. The MIC37151-3.3BR TR is also suitable for applications that require low dropout voltage and with the LDO feature ensures voltage stability and load regulation.

Working Principle

The MIC37151-3.3BR TR is a low dropout voltage regulator that uses a pass transistor as the primary energy transfer component. The output voltage is established, as in other types of low dropout regulators, by a band-gap reference generating between 0.6V and 1.2V. The reference is set to the required voltage by an external resistor divider network.

The reference is then compared to the feedback voltage. The error signal generated is then amplified by an internal error amplifier and fed to the pass transistor, which controls the current flowing through the output. This current drives the output voltage to the desired level, thereby maintaining the accuracy of the output voltage. The current on the pass transistor is then regulated by the control circuit that senses the load current, limits the maximum output current, and keeps the load current from exceeding the programmed maximum current limit.

The MIC37151-3.3BR TR also features built-in temperature sensing. This sensing circuit monitors the operating temperature of the regulator and can shut down the output in the event of over-temperature conditions. This safety feature allows for improved reliability and longer life for the device.

The MIC37151-3.3BR TR has a wide input voltage range of 2.6V to 40V and is available in various package types. Its low quiescent current makes it very suitable for battery powered applications. The device is also optimized for low dropout voltage and low noise performance, as well as low quiescent current consumption, making it an ideal solution for a variety of DC-DC power supply applications.

Conclusion

The MIC37151-3.3BR TR is an ideal solution for designs that require low dropout voltage, high output current and adjustable current limit. Its high-output current, low dropout voltage, and low quiescent current consumption make it the ideal choice for many applications. Its wide input range and versatile package options make it a great choice for a variety of applications.

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