TPS76815QPWP

TPS76815QPWP Application Field and Working Principle

The TPS76815QPWP is a low-dropout, low-noise linear regulator from Texas Instruments, which provides up to 1.5A of continuous output current in a 20-pin, QFN package. It utilizes an advanced bi-CMOS process to deliver better performance, lower power consumption, and higher efficiency than traditional linear regulators.

The TPS76815QPWP delivers improved line and load regulation with a guaranteed typical output voltage of 1.3V and no more than 0.3V dropout when 1.5A load current is applied. It also features an adjustable output voltage range of 1.2V to 3.6V, making it suitable for a wide variety of voltage supply requirements. The device also provides excellent transient response and power supply rejection ratio of 65 dB.

The TPS76815QPWP is quite suitable for applications such as personal computers, set-top boxes, graphics cards and notebook/ultra-mobile PCs (UMPCs) which require high-precision output voltage. The device also features power-on reset, which helps the equipment to be reset automatically when the power is applied after a power failure. It also has enable/disable and PGOOD (power-good) pins.

Working Principle

The TPS76815QPWP is a linear regulator, which utilizes a control loop to regulate the output voltage. The circuit uses a voltage reference, an operational amplifier and an error amplifier. The voltage reference is used to set the output voltage by providing a voltage reference input to the error amplifier. The operational amplifier compares the output voltage with the reference voltage and adjusts the current in the output transistor to regulate the output voltage.

The device supports input voltages up to 20V and can supply up to 1.5A of output current with a dropout of only 0.3V. It also features improved line and load regulation and excellent transient response. The device is also equipped with over-temperature and over-current protection for improved safety.

Conclusion

The TPS76815QPWP linear regulator from Texas Instruments is an excellent device for various voltage supply requirements. It provides improved line and load regulation and excellent transient response with 0.3V dropout when 1.5A load current is applied. It also features adjustable output voltage range of 1.2V to 3.6V, power-on reset, enable/disable and PGOOD (power-good) pins, over-temperature and over-current protection for safety. With its high performance and low power consumption, it is a great choice for various applications.