MIC5210-3.0BMM-TR

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The MIC5210-3.0BMM-TR is a part of the MIC5210-3.0BMM series of linear voltage regulators from Micrel. This series is designed to provide a regulated output voltage in a SOT-23-5 or SC-88 package with an output current capacity of 500mA. The product offers several features that make it suitable for a variety of applications, including an Enable pin for shutdown, power good flag, short-circuit and over-voltage protection, and thermal shutdown. This article will provide an overview of the application field and the working principle of the MIC5210-3.0BMM-TR.

The MIC5210-3.0BMM-TR is designed to provide an accurate regulated output voltage of 3.0V with an output current of 500mA. It can also provide adjustable output voltages from 1.2V to 5.5V with the addition of an external resistor divider and a voltage reference. The device features an Enable pin for shutdown, an internal power good flag for monitoring the output voltage, an over-voltage protection circuit that will shut the device off when an over-voltage condition is detected, and thermal shutdown circuitry to protect from high junction temperatures. The device is also protected from short-circuit conditions and will automatically reset itself when the condition is cleared.

The MIC5210-3.0BMM-TR can be used in a variety of applications, such as digital point-of-load (POL) modules, embedded microprocessor systems, DSL and cable modems, and communication, networking, and storage systems. It can also be used to provide a regulated voltage supply in systems where space is at a premium. In addition, it can be used to provide a low-noise output voltage supply in systems that require an accurate and reliable output voltage.

The MIC5210-3.0BMM-TR is a linear voltage regulator, which means it is designed to keep the output voltage at a constant level despite changes in the load current, input voltage, and other conditions. It is based on a voltage reference circuit that controls a series of transistors to regulate the output voltage. In other words, the voltage reference circuit acts as a comparison circuit to ensure that the output voltage remains constant regardless of changes in the input voltage or load current.

When the Enable pin is low, the device is disabled and draws very low current. When the Enable pin is high, the device is enabled and the regulated output voltage is regulated. The voltage reference circuit monitors the output voltage and uses a series of transistors to regulate the output voltage by either allowing or limiting current flow. If the output voltage is too low, the circuit will allow more current flow, and if the output voltage is too high, the circuit will limit the current flow.

The device also has an internal power good flag that can be used to monitor the output voltage. The power good flag is set when the output voltage is within a specified tolerance and is reset when the output voltage is outside the specified tolerance. It can be used to provide a warning when the output voltage is not within the desired range.

The device also has short-circuit protection and over-voltage protection that will turn off the device when a short-circuit condition is detected or when the output voltage exceeds the over-voltage protection point. The device also has thermal shutdown protection that will turn off the device when the junction temperature exceeds a certain threshold.

In conclusion, the MIC5210-3.0BMM-TR is a linear voltage regulator designed to provide a regulated output voltage of 3.0V at an output current of 500mA. It is suitable for a variety of applications, including digital point-of-load modules, embedded microprocessor systems, communication, networking, and storage systems. It features several features, such as Enable pin for shutdown, power good flag, short-circuit and over-voltage protection, and thermal shutdown, that make it an attractive option for engineers designing power supply solutions for their systems.

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