TPS77533PWPR

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The TPS77533PWPR is a programmable linear voltage regulator driven by a voltage mode control scheme. It is designed to provide an adjustable and accurate output voltage. Primarily intended for point-of-load applications where supply current is limited, it is offered in a small 8-pin 1.2mm THINFILM package.

The TPS77533PWPR programmable linear voltage regulator utilizes a high-precision, analog programmable current- limited reference to provide an adjustable output voltage. The output is adjustable from 0.7V to 3.15V in steps of 12.5mV. A power-on reset signal monitors the output. The output voltage is programmable via an I²C interface that uses an external voltage-mode control.

Given its low noise characteristics and its built-in protection features, the TPS77533PWPR is an ideal choice for powering and sequencing digital processors, memories and other digital components. It is also very suitable for powering low voltage devices such as LCD or LED displays, and for general purpose low voltage regulator applications.

The TPS77533PWPR is based on three main components: the voltage reference, the error amplifier and the output circuit. The voltage reference generates a reference voltage, typically 0.8V, which is compared to an external voltage signal. This signal is generated by an external voltage-mode control and serves as the regulator’s setpoint. The error amplifier receives the difference between the reference signal and the setpoint signal and compares it to the output voltage. If the difference is greater than a threshold, the error amplifier will adjust the output accordingly.

The output circuit contains the power transistor switch, which turns off and on according to the error amplifier\'s output to maintain the output voltage. It also contains a current limit circuit which limits the current when the output voltage is too high. The output circuit is also fitted with an overtemperature protection circuit, a short-circuit protection circuit and an open drain for current monitoring.

In addition, the TPS77533PWPR also provides additional protection features such as a shutdown pin to shut down the outputs, and a setting pin to select between Normal mode and Adjustable Mode. It also has an internal reset that monitors the output voltage. Moreover, it can be programmed to switch between different output currents under different temperature conditions.

All of these features make the TPS77533PWPR a great choice for point-of-load applications where supply current is limited. It is an ideal solution for powering and sequencing digital processors, memories and other digital components that require a low noise, low output voltage and protection from short circuits, over-temperature, and over-voltage.

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