S-1711D2518-M6T1G

The S-1711D2518-M6T1G is a voltage regulator, which, like all linear voltage regulators, falls into the Power Management IC (PMIC) category. A linear voltage regulator regulates the output voltage by using a series of components, including both active and passive elements, in order to maintain voltage level, regardless of load and input fluctuations.

Application Field

The S-1711D2518-M6T1G is a low-dropout voltage adjuster, indicated for battery-powered application designs, such as those in wearable technology and portable device projects. Its 0.6V operating voltage minimizes power dissipation and noise, seeking to increase reliability by enhancing battery life.

Additionally, S-1711D2518-M6T1G’s 4-pin SOT package and efficient design allow it to be used in low-profile and low-height applications, such as smart bracelet, mini audio or other smart device applications.

Features

The S-1711D2518-M6T1G has a 2.5V fixed operating voltage and provides high accuracy and consistency across the load and temperature ranges.

It is also capable of withstanding a peak current up to 4A and features a fast transient response time and high ripple rejection, thanks to its frequency compensation method.

The S-1711D2518-M6T1G incorporates an on/off control pin to regulate circuit shut down.

It is also designed to be integrated with a fixed output voltage of 5V, which can be further adjusted through the external resistor connected to the pin.

Working Principle

The S-1711D2518-M6T1G works on the principle of Adjustable Series Pass. At the input side, the S-1711D2518-M6T1G has an amplifier circuit, which is responsible for sensing the output voltage. This amplifier circuit is connected to an error amplifier circuit, which compiles the input reference voltage and the sensed output voltage to determine the error between the expected output voltage and the sensed output voltage.

The output side of the error amplifier is connected to an active switch, which controls the ON/OFF of the series pass formed by an output transistor and a resistor. The resistance of the resistor is controlled by the external resistor connected to the external pin of the regulator. The ON/OFF operation of the transistor is determined by the error amplifier. When there is an error detected, the amplifier output turns ON the switch, thus reducing the resistance of the series pass and increasing the output voltage.

Whenever the input voltage is changed, the error amplifier senses it and compensates the output voltage, thus regulating the output voltage.

Conclusion

The S-1711D2518-M6T1G is a linear voltage regulator, which falls into the PMIC category. It is designed for use in low-profile and low-height applications, and offers a 2.5V fixed operating voltage with a 0.6V peak current withstand. It works by using a series of components, including both active and passive elements, in order to control the output voltage, regardless of load or input fluctuations.