MP8124GD-P

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MP8124GD-P Application Field and Working Principle

PMIC (Power Management Integrated Circuit) voltage regulators provide an efficient and reliable way of achieving voltages for ASIC chip sets, microprocessors, and systems where voltages are required to be finely regulated. Voltage regulator families, such as the MP8124GD-P, provide a cost effective and reliable solution, meeting the different power requirements of digital systems. This article outlines the application field and working principle of the MP8124GD-P Voltage Regulator.

MP8124GD-P Voltage Regulator Applications

The MP8124GD-P voltage regulator is specifically designed for application in low power, low current applications operating at a wide input range of 1.2V to 6V, with a typical output of 3.3V at up to 1A. It is an especially suitable voltage regulator for low voltage, low power logic circuits, such as those found in portable and mobile devices. It is also ideal for regulating various elements of the logic based circuit boards of digital systems.

The on-board error amplifier makes sure that a precise output voltage is maintained in spite of variations in the input voltage and load. Its low operating current of 8mA is a beneficial measurement for power saving and helps to prevent overloading.

Revolutionary Features of the MP8124GD-P Voltage Regulation

The MP8124GD-P is a Special Purpose supply voltage regulator with revolutionary features. It provides a low 50µA quiescent current over the whole input voltage range. This enables excellent efficiency levels, making it ideal for green or energy saving applications. It is particularly suited to compact battery powered electronic devices, such as phones, tablets, media players, cameras, and wearable technology.

This voltage regulator also supports short-circuit protection and thermal shutdown. This lessens the inrush current due to the energy stored in the outputs and further helps to prevent overloading. With other features, such as the facilitation of multi-cell battery inputs, reduce in ESR, and lower transient response times, it is no surprise that the MP8124GD-P is ideal for the widest range of demanding applications.

The Principle of Operation

The MP8124GD-P works on the classic principle of operation of a linear voltage regulator, which is to compare the voltage drawn from the output against a stable reference voltage. When the output voltage exceeds the reference voltage, it activates a feedback loop which signals the regulator to adjust the output voltage. This simple but effective technique enables the output voltage of the system to be maintained in a stable state, even when the environment or application changes.

The MP8124GD-P takes this principle of operation one step further by incorporating an error monitoring ampliphier. This ampliphier monitors the output voltage, comparing it to an internal 2.75V reference, and feeds the differential signal back to the control logic. This adjusts the P-channel MOSFETs gate voltage in order to adjust the output voltage with great accuracy.

The error amplifier also includes an enable input to allow the regulator to be switched off when the system is put into idle or sleep state. This further helps to reduce the system power consumption, which is the ultimate goal with Special Purpose voltage regulators such as the MP8124GD-P.

Conclusion

The MP8124GD-P voltage regulator from ON Semiconductor is a versatile, efficient and low-cost solution for devices that demand precision output regulation over a wide input range. It is optimized to provide the lowest static and dynamic power consumption in the wide range of input voltages (1.2V - 6V). The error amplifier incorporated into this voltage regulator helps ensure that the output voltage is accurately regulated. It is often chosen in applications where cost effective, accurate and low-power is required.

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