TPS78236DRVT Application Field and Working Principle

The Texas Instruments TPS78236DRVT is a low-dropout voltage regulator (LDO) designed to offer a cost-effective and reliable power solution for many applications. It is a three-terminal adjustable regulator with excellent line and load regulation. It is well tested and has a high rate of reliability in both commercial and automotive applications. This makes it suitable for a wide range of automotive, telecom and industrial applications.

The TPS78236DRVT uses current-mode internal feedback and its output voltage is regulated according to the value of an external resistor divider connected to the feedback pin. The output of the regulator can be adjusted by varying this resistor divider. The output voltage range is typically kept within a 0.8V to 6.3V range with a +/-2% accuracy. The LDO also features high power supply rejection ratio (PSRR) of 88dB and low output noise of 30μVRMS at 1kHz.

The TPS78236DRVT uses a p-channel Field Effect Transistor (FET) as the pass device and is hence capable of regulating an output current up to 2A. It also has a very low dropout voltage of 205mV at a full load of 2A and 50mV at light load currents. The device has a typical quiescent current of 5mA, but has a low shutdown current of 0.2μA to keep the load current to a minimum in standby mode.

The TPS78236DRVT comes with a variety of features such as a thermal shutdown protection circuitry and over voltage protection (OVP) circuit to protect the external load from unexpected overvoltage conditions. It also features a 0.8V error amplifier output voltage and 5.5V over voltage protect (OVP) limit. It also features an adjustable reverse current limit that can be set through an external resistor to match the current limit requirements of the application.

Overall, the TPS78236DRVT is a very reliable and power efficient low-dropout voltage regulator that can be used in a wide range of applications. With its wide voltage range, excellent line and load regulation, high PSRR, low output noise, and over voltage and overcurrent protection, it is an ideal choice for automated applications.