RT9011-SQGQWC

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The RT9011-SQGQWC is a good example of a Linear voltage regulator within the power management IC (PMIC) industry. This linear voltage regulator offers a highly efficient solution that is reliable and easy to implement into your system.

Overview

The RT9011-SQGQWC Voltage Regulator is a low dropout (LDO) low-noise Linear regulator that provides an output voltage from 1.0V to 5.5V. It offers high performance and a high power supply rejection ratio with ultra-low operating current. This makes it ideal for applications with stringent power requirements such as portable electronics, single-cell Li-Ion applications, and embedded systems with tight power-constraint requirements.

Applications

RT9011-SQGQWC’s efficiency and simple accuracy make it suitable for many quality-of-service sensitive applications such as handheld audio and video players, PDAs, voicemail systems, digital cameras and MP3 players, Internet radios, and medical equipment.

It also provides stability and reliability in telecommunications basestations and RF antenna solutions. Many of the countless power supply solutions used in networking and telecommunications fields rely on RT9011-SQGQWC to provide a stable and accurate voltage supply.

In addition, its low operating current, features excellent ripple suppression, and high precision makes it ideal for automotive applications, such as rearvision systems, onboard diagnostics, engine control systems, and advanced driver assistance systems.

Working Principle

The RT9011-SQGQWC Voltage Regulator uses an internal series-pass device to regulate the output voltage. This series-pass device is constructed in a common-source configuration and is designed to provide maximum linearity throughout the regulation range. The output voltage is set by an external resistor divider network, which is connected between the output and ground terminals.

The output voltage is determined from the following equation: Vout = Vref (1 + R2/R1), where Vref is the internal reference voltage and R1 and R2 are the external resistor divider network resistors.

The RT9011-SQGQWC includes two other key components: an in-built current limit circuit and thermal shutdown circuit. The current limit circuit senses the output current and limits it to a safe value in the event of a fault condition. Meanwhile, the thermal shutdown circuit safeguards the device from damage in the event of overheating.

Conclusion

The RT9011-SQGQWC is an excellent example of a Linear Voltage Regulator within the PMIC industry. It has a wide range of applications and is designed to provide maximum linearity throughout the regulation range, with high power supply rejection ratio and ultra-low operating current.

Its low dropout, low-noise, and high precision make it ideal for use in quality-of-service sensitive applications such as medical equipment, audio and video players, PDAs, and automotive systems. On top of that, two other key components – a current limit circuit and thermal shutdown circuit – are included, ensuring maximum performance of the device even in the event of faults.

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