TPS71933-28DRVT

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The TPS71933-28DRVT is a fixed output low-noise linear voltage regulator from Texas Instruments, which belongs to the Power Management Integrated Circuit (PMIC) - Voltage Regulators - Linear category.

The TPS71933-28DRVT has an operating temperature range of –40°C to 85°C and a maximum output current of 550mA. It has a 2.8V fixed output voltage and is designed to provide low-noise and efficient voltage regulation. The device also offers a fast transient response and low dropout voltage (50mV at 550mA load current).

The TPS71933-28DRVT is protected from short-circuits, current limit, over temperature and overvoltage protection, and reverse polarity. It also features an enable pin for standby power reduction and fast start-up. In addition, it features a shutdown current of 0.25µA, making it suitable for battery-powered applications.

Applications of the TPS71933-28DRVT include communications, handheld devices, PC and PC peripherals, consumer electronics, and digital signal processing.

The TPS71933-28DRVT is a low-power linear regulator, which operates by regulating the input voltage to its output voltage. The regulator uses a series pass element, usually a PMOSFET, to transfer power from the input voltage to the output. The regulation is achieved by controlling the conduction in the series pass element, usually through a voltage divider. The voltage divider ensures that the output voltage is regulated to the desired value by diverting a small portion of the input voltage, which is then fed back to the series pass element.

In order to compensate for the potential fluctuations in the output voltage and maintain the regulation accuracy, the regulator also contains additional circuitry, such as current sources, voltage references, and comparators, to ensure the output voltage is maintained at its desired value. When the input voltage is lower than the set voltage, the current is increased and the voltage reference is used to adjust the output voltage.

The TPS71933-28DRVT achieves very low noise performance by featuring a frequency-compensated loop-gain network. The device also features a fast transient response, low power consumption, and low dropout voltage. It also features a low standby current consumption of 0.25µA.

Overall, the TPS71933-28DRVT is an excellent low-noise linear voltage regulator that delivers efficient and accurate voltage regulation. It is ideal for applications such as communications, handheld, consumer electronics, and digital signal processing.

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