TPS71918-28DRVT

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The Texas Instruments TPS71918-28DRVT is a high-performance low-dropout (LDO) linear regulator. It is designed for applications where high input and output voltage range, low quiescent current, and low dropout voltage are the main design criteria. The wide input voltage range of 4V to 28V makes it suitable for use in a variety of power management applications. Furthermore, the circuit features current and thermal protection, as well as short-circuit protection, providing a safe and reliable operation even under harsh conditions.

The TPS71918-28DRVT is specially designed to work in power management applications such as motion control, power amplifiers, and industrial and automotive applications. It is capable of supplying an output voltage ranging between 1.2V and 26V, with a nominal output of 5V and a maximum output current of 2A. With a typical dropout voltage of 250mV, it is one of the most efficient regulators on the market, providing superior performance when compared to other low dropout regulators.

The operating principle of the TPS71918-28DRVT is that of a traditional linear voltage regulator. The input voltage is applied to a voltage divider, which is connected to the non-inverting input of the operational amplifier at the core of the circuit. The voltage at the output of the voltage divider is set by a resistor divider network, whose value is determined by the user according to their needs. The output of the operational amplifier is fed to the output of the regulator.

The resistor divider effectively sets the output voltage. When the output voltage of the regulator falls below the desired level, the operational amplifier is enabled and starts pulling the output voltage back to the desired level. As the voltage increases, the operational amplifier will reduce its gain, reducing the output voltage. This allows the regulator to maintain a constant output voltage.

The TPS71918-28DRVT provides excellent transient response, making it ideal for applications that require frequent load changes. It also features a fast start-up time and low ground current, providing high efficiency and reliability. Furthermore, a wide operating input voltage range allows the regulator to be used in a wide range of applications.

In summary, the TPS71918-28DRVT Linear Voltage Regulator is an excellent choice for applications that require a low dropout voltage, high input and output voltage range, low quiescent current and fast transient response. It provides excellent performance and reliability even under harsh conditions, making it suitable for use in a variety of power management applications.

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