TPS77701PWPRG4 Integrated Circuits (ICs)

TPS77701PWPRG4, a Voltage Regulators under the Linear category of PMICs (Power Management ICs), is a fixed low-dropout linear regulator with adjustable current limit and a power-good output. This device, also known as LDO (Low Dropout Regulator), has an output current rating of 1A, a fixed voltage of 1.5V, and a typical dropout voltage of 0.275V. It is suitable for applications that require high precision, low noise, and good power efficiency.

Applications

TPS77701PWPRG4 is widely used in many consumer, communication, and computing products that require low noise and reliable power supply. It can be applied for 1.2V power applications, especially for battery-powered devices. The LDO regulator is commonly used in the power stages of gate arrays, field-programmable gate arrays (FPGAs), microprocessor and microcontroller circuits, and data converters, including analog-to-digital or digital-to-analog (A/D or D/A). It also applies for USB port protection, as well as for other reliable applications, such as industrial automation, automotive, and consumer entertainment peripherals.

Working Principle

The TPS77701PWPRG4 works based on the classic transistor-based linear regulator theory. First, the three functional blocks - error amplifier, pass element, and voltage reference - work together to create the regulated voltage. The error amplifier monitors the output voltage and sends an error signal to the pass element. If the output voltage is higher than expected, then the error amplifier sends a signal to reduce the current flow at the pass element. If the output voltage is low, then the error amplifier sends a signal to increase the current flow at the pass element. In this way, the pass element responds to the error signal to make sure that a constant output voltage level is maintained.

The integrated low-dropout linear regulator framework of the TPS77701PWPRG4 ensures a precise output voltage with low noise and good power efficiency. It also integrates several safety features such as thermal shutdown, over-current protection, and open-fault/short-circuit protection to ensure safe operation.

Conclusion

TPS77701PWPRG4 is a widely used low-dropout linear regulator with adjustable current limit and excellent power efficiency. This PMIC device offers great accuracy, low noise, and excellent thermal performance, making it suitable for various RF, automotive, computing, and consumer applications.