TPS79928DRVTG4

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TPS79928DRVTG4 Application Field and Working Principle

The TPS79928DRVTG4 is an advanced linear voltage regulator specifically designed for space-constrained applications. It is an integrated solution with an integrated low-dropout linear regulator, one integrated ultra-low-dropout linear regulator, and a pass transistor. It is capable of providing up to 5A of output current with a very low quiescent current.

Low-Dropout (L-D-O) Linear Voltage Regulators

Low-dropout (L-D-O) linear voltage regulators are designed to provide an output voltage that is tightly regulated by sensing and feedback circuits. They tend to provide very low output voltage variations and higher output currents than many other voltage regulators. L-D-O linear regulators are a popular choice for battery-powered devices and other low-voltage applications, since they can operate over a wide input voltage range.

The TPS79928DRVTG4 is designed around a low-dropout linear voltage regulator, which means that its output voltage tolerance is excellent even with relatively large input voltage drops. The device also features an adjustable output voltage range of 0.8V to 5.5V. It can also be used with a supply voltage of 1.3V to 4.9V and can handle output currents of up to 5A.

Integrated Ultra-Low-Dropout Linear Regulator

The integrated ultra-low-dropout (UL-D-O) linear regulator of the TPS79928DRVTG4 consists of a reference, error amplifier, and pass transistor. This low-power design allows it to supply output currents of up to 5A. Its output voltage is regulated with an initial accuracy of ±2%, and can be trimmed to ±0.5% using external components.

The UL-D-O linear regulator features fast transient response, enabling it to respond quickly to rapid load changes over a wide range of output current levels. It also has an adjustable quiescent current, which allows it to be adjusted to further reduce power consumption in battery-powered applications.

Pass Transistor

The TPS79928DRVTG4 includes an integrated pass transistor, which serves as a switch between the input voltage and the output voltage. The pass transistor is a high-efficiency device that provides better power efficiency and higher output currents than regular PMOS switches. When used as a switch, it allows the TPS79928DRVTG4 to provide up to 5A at voltages as low as 0.8V.

Applications of TPS79928DRVTG4

The TPS79928DRVTG4 is ideally suited for battery-powered applications due to its ultra-low quiescent current and wide adjustable output voltage range. It performs best in applications such as low voltage power supplies, UPS’s, cellular phones, notebooks, automotive electronics, industrial applications, and consumer electronics.

Furthermore, its fast transient response, adjustable quiescent current, and integrated pass transistor make it a great choice for applications where high efficiency and performance are key. With its excellent tolerance to input voltage drops, it is ideal for portable or low-voltage circuits. The TPS79928DRVTG4 integrates fault protection features to ensure reliable power conversion.

Conclusion

The TPS79928DRVTG4 is an advanced linear voltage regulator designed for space-constrained applications. It integrates an ultra-low-dropout linear regulator, a low-dropout linear regulator, and a pass transistor, making it an ideal solution for battery-powered, high-efficiency applications. Its adjustable output voltage range, fast transient response, and adjustable quiescent current make it well-suited for a wide range of mission-critical applications.

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