MIC2954-08BM

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The MIC2954-08BM is a low dropout (LDO) linear voltage regulator capable of providing up to 800mA continuous current. Originally designed to support 5V or 3.3V system level voltage requirements, this device has gone through a few iterations in order to suit the needs of a wide range of applications, offering multiple output voltage options and slew rate control pins.

This linear voltage regulator also has an adjustable version, MIC2954-10BM, which makes it even more versatile, with voltage output adjustable between 1.5V and 10V in 10mV increments with an external resistor divider.

The MIC2954-08BM is backed by several key features and integrates several safety protections, making it suitable for a diverse set of applications, including computers, consumer electronics, automotive, telecom, and industrial embedded systems, as well as medical equipment.

Application

The MIC2954-08BM is designed for local CPU Vcore supply and power supply applications, acting as a low dropout (LDO) linear regulator. It features a reduced dropout voltage profile compared to standard LDOs.

As a system-level voltage supplier, the MIC2954-08BM can provide a stability that contributes to improved system reliability and stability. Its parameter setting allows for easy system optimization, as well as its impressive output accuracy, which goes up to ±2%.

The MIC2954-08BM allows for a low quiescent current of 400µA, and it is also able to operate down to 0.8V input. Additionally, it has operated temperature range from -40 °C to 125 °C. All these features make the MIC2954-08BM suitable for a wide range of applications including fixed 5V or 3.3V output, as well as special output voltages adjustable from 1.5V to 10V.

Safety Features

The MIC2954-08BM includes safety features that make it suitable for a wide range of applications. Those are: Under-voltage lockout (UVLO), over-temperature protection (OTP), surge current suppression, inrush current limitation, as well as current and thermal overload protection.

UVLO prevents the device from operating below its specified voltage level. Over-temperature protection safeguards the device from any thermal issues by giving a warning or shutting down the MIC2954-08BM in case it gets excessively hot. Surge current suppression limits peak inrush current surges. In addition to those, the MIC2954-08BM is able to withstand an output short circuit and discharge its load.

Working Principle

The MIC2954-08BM works by providing a constant and stable output voltage, even when the input voltage fluctuates. It does this by using a process known as voltage regulation, which involves controlling the output voltage through feedback and adjustment of a voltage reference. The voltage reference is compared to the output voltage, or ground (depending on the circuit). The errors in the feedback are used to adjust the voltage reference so that the output voltage remains constant.

To ensure that the output voltage remains within the desired range, the MIC2954-08BM uses a series of safety features, such as overcurrent, over-temperature and UVLO protection. In the event of a voltage fluctuation, the MIC2954-08BM will shut itself down to prevent any damage.

The MIC2954-08BM is ideal for applications that require a low-cost and low-dropout voltage regulator, with excellent output accuracy, stable operation, and low quiescent current. It is capable of operating at temperatures ranging from -40 °C to 125 °C, making it suitable for a wide range of applications. Additionally, it offers a variety of safety features, such as short-circuit protection and overload protection. Its adjustable version, MIC2954-10BM, allows for additional flexibility in output voltage range, allowing for voltage adjustments from 1.5V to 10V in 10mV increments.

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