TAR5S33TE85LF

TAR5S33TE85LF application field and working principle

This document explains what are the field of application and working princple of TAR5S33TE85LF voltage regulator, which falls under the category of Linear PMIC Voltage Regulators. TAR5S33TE85LF is an ultra-low dropout (ULDO) voltage regulator offering very low quiescent current and high efficiency. It operates on supplies up to 8.5 V and delivers an output voltage ranging from 0.8 V to 5.5 V with up to 500 mA. Its high accuracy and high power supply rejection ratio make this device a great choice for low power voltage regulation in portable and high-performance applications.

Application Field

ULDO regulators like TAR5S33TE85LF are suitable for various end applications such as low power wireless systems, personal digital assistants (PDA’s), remote meters, USB powered applications, and laptop PCs. In particular, the device is specifically designed for applications requiring a low quiescent current of 380 μA and very low dropout voltage. It is also suitable for powering a voltage reference or boosting low voltage outputs generated by a battery.

Working Principle

The TAR5S33TE85LF linear voltage regulator works on the principle of negative feedback. This mode of operation is preferred for low power applications and offers superior stability and regulation performance. The regulator’s input voltage is compared to an internal reference voltage and a corresponding error signal is generated. This feedback is used to control the output voltage, resulting in a regulated output.

Conclusion

The TAR5S33TE85LF is an ultra-low dropout voltage regulator designed for applications requiring a low quiescent current and very low dropout voltage. It offers superior stability and regulation performance and operates on supplies up to 8.5 V with up to 500 mA. End applications include low power wireless systems, personal digital assistants (PDA’s), remote meters, USB powered applications, and laptop PCs. It works on the principle of negative feedback and is an excellent choice for low power voltage regulation in portable and high-performance applications.