TPS71718DSER

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The TPS71718DSER is a low-dropout linear voltage regulator from Texas Instruments’ TPS717xx family of integrated circuits. This relatively small three-terminal regulator has quad N-channel MOSFETs driving an adjustable or fixed voltage output from a 0.5V to 5.5V range. The TPS71718DSER is used in a wide range of commercial and industrial applications including automotive, aerospace, and medical applications.

The TPS71718DSER is capable of output currents up to 1.6A and is designed to deliver power supplies with extremely low noise levels and low output offset voltage. It has exceptionally low dropout voltage of only 100mV at 1A and 200mV at 0.5A. Its high PSRR performance (100dB at 10kHz) allows it to obtain power supply noise immunity with high accuracy and no oscillations. It also has a low quiescent current of just 1.25mA, allowing it to reduce power consumption and improve the efficiency of power management systems.

The TPS71718DSER’s internal circuitry consists of an amplifier and compensator arrangement regulating the output voltage. The amplifier compares the output voltage and a reference voltage to produce a control loop error signal. This error signal is then fed to the compensator network which adjusts the drive to the series p-channel MOSFETs and sets the output voltage. Due to its precision built-in voltage reference network, the TPS71718DSER can be used for both adjustable and fixed-voltage applications.

The TPS71718DSER is designed for single and split supply operation, with a voltage regulator logic allowing it to switch between the two operating modes. The FLYBACK discharge circuitry disengages the output before the gate voltage reaches 0V, allowing the regulator to enter a power-down state quickly and safely, without the risk of body diode conduction. The device is also protected against overcurrent, overvoltage, and overtemperature conditions, thanks to its integrated overcurrent protection and internal thermal shutdown.

In summary, the TPS71718DSER is a versatile linear voltage regulator with a wide range of applications in automotive, aerospace, medical, and many other industries. Its extremely low noise, low power consumption, and high accuracy features make it ideal for a wide range of power management systems. Thanks to its integrated protection features, it is particularly suitable for power-sensitive applications where reliable performance is paramount.

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