TPS77401DGKR

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TPS77401DGKR Application Field and Working Principle

The TPS77401DGKR is an advanced linear voltage regulator that belongs to the PMIC - Voltage Regulators - Linear category.

Introduction

The TPS77401DGKR linear voltage regulator is designed to provide the user with flexible power supply design capabilities with excellent performance and performance ripple through its low quiescent current and very stable output characteristics. With its built-in short circuit current limit, current regulation, and thermal shutdown protection, it is suitable for use in a variety of applications where reliable voltage regulation is required. The TPS77401DGKR is also offered in a very small QFN5 package, allowing for easier implementation of the device in tighter space requirements.

Features and Benefits

The TPS77401DGKR linear voltage regulator offers some excellent features and benefits to the user including the following:

• Very low quiescent current (1 μA typical)
• Excellent line regulation (0.2% maximum), load regulation (0.3% maximum), and very low noise (4 μVrms) specifications
• Built-in short-circuit current limit, current regulation, and thermal shutdown protection
• Very small QFN5 package (1.45x1.45x0.6mm) ideal for reducing board space requirements
• Wide input voltage range (1.8V to 6V)
• Utilizes an extremely low-power reference circuit to ensure excellent degrees of accuracy.

Applications

The TPS77401DGKR linear voltage regulator is well-suited for a variety of applications such as DSP and microcontroller power supply, automotive power supply, telecom power supply, and industrial power supply. It is also widely used in networking and telecommunication applications, including the powering of base transceiver and radio receivers.

Working Principle

The TPS77401DGKR linear voltage regulator works by regulating the input voltage in a very simple manner. The voltage regulator takes the input voltage and regulates it through a feedback loop using an error amplifier. The difference between the input voltage and the output voltage is called the "error voltage." The error voltage is then amplified and compared to a reference voltage by the error amplifier. When the error voltage is greater than the reference voltage, the error amplifier sends a signal to the output transistor to drive the output voltage closer to the desired voltage. The output voltage is then regulated by adjusting the amount of current output by the error amplifier.

Conclusion

The TPS77401DGKR linear voltage regulator is a very advanced and feature-packed product that is perfect for a variety of applications ranging from microcontroller power supply to industrial power supply. Its low-quiescent current, wide input range, small package size, and other features make it an ideal choice for a variety of power needs. Its excellent line, load and noise specifications also make it a very reliable product for power supply applications where reliability is a must.

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