Max1725EUK-T Application Field and Working Principle

The Max1725EUK-T is a three-terminal, low-voltage, micro-power, linear regulator. It is a high-accuracy, low-output positive-voltage regulator, classified as part of the PMIC – Voltage Regulators – Linear range. This regulator is designed to operate on an input voltage of up to 28 volts, departing from the conventional linear regulators which only start regulating at an input voltage of 5 volts.

In addition, the Max1725EUK-T has a low shutdown current of 3µA, making it suitable for use in applications that have strict power consumption requirements, and it has a high load current accuracy of ±1%. This regulator also features a high-efficiency on–off mode, which allows it to operate with a low quiescent current of 1.7mA to achieve a minimum output voltage of 200mV, again departing from the usual linear regulators.

The Max1725EUK-T also features a low-noise, low-dropout voltage regulator, offering a low-noise output voltage of up to 8µV RMS. This regulator also has an output current protection, with a maximum output current of 220mA.

Max1725EUK-T Working Principle

The Max1725EUK-T is a three-terminal, low-voltage, micro-power, linear regulator, with a working principle of voltage regulation. The regulator uses an internal reference voltage and an internal error amplifier to control the output voltage. The input voltage is compared to the output voltage to create an error signal that is used to adjust the output voltage.

The Max1725EUK-T also features an on-off switch, allowing the system to operate in two modes: in the on-off mode, the input is enabled and the output voltage is regulated by the internal reference voltage. In the off-mode, the input is disabled, disconnecting the output from the input signal, preventing any power dissipation by the regulator. This two-mode operation helps reduce power consumption and prolong the life of the regulator.

Max1725EUK-T Applications

The Max1725EUK-T is suitable for a wide range of applications such as laptop computers, LCD monitors, media players, digital cameras, digital audio players, AC/DC adapters, mobile phones, and any other devices with strict power consumption requirements.

It is also suitable for use in applications where a low-output positive-voltage regulator with a high-accuracy output current is required. It can be used to better regulate the power input to devices by providing a stable output voltage and low-noise output voltage, thanks to its high-efficiency on–off mode.

Conclusion

The Max1725EUK-T is a three-terminal, low-voltage, micro-power, linear regulator, designed to operate on an input voltage of up to 28 volts. It offers a high-accuracy, low-output positive-voltage regulator, with a low shutdown current of 3µA. It also features a high-efficiency on–off mode, which allows it to operate with a low quiescent current of 1.7mA to achieve a minimum output voltage of 200mV. The Max1725EUK-T is suitable for a wide range of applications such as laptop computers and mobile phones, as well as for use in applications where a low-output positive-voltage regulator with a high-accuracy output current is required.