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PMIC - Voltage Regulators - Linear Regulator Controllers

Introduction to MIC5159-3.0BM6-TR

The MIC5159-3.0BM6-TR is a linear regulator controller module supplied by Micrel, it is a 3-terminal positive voltage regulator module and offers several salient features, some of them are:

• High-performance Regulation
• Full protection set: Line and Load Regulation, Short Circuit Protection, Over Temperature Protection
• Low Dropout Voltage
• Input Voltage Range from 0.7V to 5.5V
• Output Voltage Range from 0.7V to 5.0V

The MIC5159-3.0BM6-TR is suitable for high current, low output voltage applications, offering high performance and good thermal stability. It features an on-chip, low-dropout, high-current, three-level voltage regulator that allows for a wide range of input and output voltages, making it ideal for applications in portable devices, industrial and automotive applications as well as voltage regulation.

Application Field

The MIC5159-3.0BM6-TR can be used in a variety of applications requiring low dropout, high current Linear Voltage Regulator, some of them are:

• Portable Devices
• Industrial Applications
• Automotive Applications
• Voltage Regulation
• Battery powered systems

The MIC5159-3.0BM6-TR is also suitable for powering voltage sensitive components, such as DRAM and SRAM as well as providing voltage to power larger systems requiring multiple voltage rails. Its wide input and output voltage ranges, together with its low dropout, make it a very versatile linear regulator controller.

Working Principle of MIC5159-3.0BM6-TR

The MIC5159-3.0BM6-TR works by regulating the output voltage based on the input voltage. The input voltage is compared to a preset reference voltage and an output voltage is generated accordingly. This output voltage is regulated to maintain the setpoint voltage within a certain range by controlling the current flowing from the input voltage. The main components in the MIC5159-3.0BM6-TR are a P-channel MOSFET, an N-channel MOSFET, a comparator, a voltage reference and various resistors.

The N-channel MOSFET acts as an error amplifier and compares the input voltage with a reference voltage (VREF) in order to produce a regulated output voltage. The output voltage is then fed back to the error amplifier via a feedback path to regulate the output voltage. The P-channel MOSFET acts as a pass transistor, it supplies current to the output side of the regulator when the output voltage is low and is shut off when the output voltage is at or above the desired level. This closed loop configuration helps regulate the output voltage and ensure that it stays within the desired range.

The MIC5159-3.0BM6-TR also features various protections such as line and load regulation, short circuit protection, over temperature protection and input overvoltage protection. The line and load regulation helps to maintain the output voltage in the desired range, even when the input voltage changes. The short circuit protection ensures that the device does not get damaged in the event of a short circuit. The over temperature protection ensures that the device does not get damaged when operating in high temperatures. The input overvoltage protection helps to protect the device from voltage spikes.

Conclusion

The MIC5159-3.0BM6-TR is a linear regulator controller module with a wide range of input and output voltages, making it suitable for a variety of applications. Its low dropout and high current capabilities, together with its range of protections, make it a very reliable and efficient regulator. Its wide input and output voltage ranges also make it ideal for voltage regulation and powering voltage sensitive components.

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