S-1721A1830-I6T1U

Linear voltage regulators are one of the most commonly used components in the power management integrated circuit (PMIC) family.The S-1721A1830-I6T1U is a versatile voltage regulator, which can be used in a number of applications across industries. This article will discuss its application fields and working principle.

Application Field of S-1721A1830-I6T1U

The S-1721A1830-I6T1U is an ultra-low-voltage, low-dropout linear regulator that integrates a power-MOSFET and a voltage regulator. It is suitable for voltage output applications such as industrial/automation systems, distributed power systems and green energy/solar equipment. The device supports input voltage range from 0.9V to 27.6V and output current up to 1A. It also supports wide temperature range, from -40℃ to 125℃ (instead of 85℃ for other manufacturers standard products).

Working Principle of S-1721A1830-I6T1U

The S-1721A1830-I6T1U is a low-dropout linear voltage regulator which is able to provide a regulated output voltage, through voltage setting pin, from 0.9V to 27.6V when the input voltage is higher than the output voltage by a certain amount, which is less than 275mV at 1A. The output voltage is precision controlled within a voltage error of ±1%.

The basic operating principle is simple. The linear voltage regulator measures the input voltage, compared it to the predetermined set-point (output voltage) and provides a PWM control signal to the MOSFET, in order to keep the output voltage stable. The MOSFET is then used to regulate the amount of current flowing through the load, thereby maintaining the output voltage. This is made possible through a feedback loop, which allows the controller to adjust the output voltage as needed.

In addition to its voltage regulation capabilities, the S-1721A1830-I6T1U also features over-current protection, over-temperature protection, UVLO (Under-Voltage Lockout) and Short Circuit protection. These extra features make the device safe for use in a range of environments.

Conclusion

The S-1721A1830-I6T1U is a versatile linear voltage regulator, which can be used in a variety of applications. Its application field ranges from industrial/automation systems to distributed power systems and renewable energy/solar equipment. Its working principle is based on a simple PWM control signal, coupled with an over-current, over-temperature, UVLO and short circuit protection. The S-1721A1830-I6T1U offers a reliable and cost-effective solution for voltage regulation needs.