PMIC - Voltage Regulators - DC DC Switching Regulators

The TPS61280AYFFR is a switched-mode DC/DC boost converter with an integrated high-side Power FET, designed for mobile battery applications. It is a step-up DC/DC converter that allows for an adjustable output voltage from 2V to 5.5V with a 2% accuracy from 2.5V to 5.5V. The device is optimised for applications requiring a low quiescent current and extended load current range. It is designed for applications such as portable media players, GPS receivers and other portable electronic device battery regulation.

Features

The TPS61280AYFFR features include adjustable output voltage, full input voltage range from 0.45V to 8V, high-efficiency step-up DC/DC regulator with a maximum peak voltage transferrable at 1.3A and a maximum peak load current up to 1.5A. It also has a very low quiescent current of just 8uA in no-load condition, low noise operation, fixed switching frequency of 750KHz, few external components required and an extremely low shut-down current of just 1uA.

Applications

The TPS61280AYFFR is well suited for low power portable applications where extended battery life, improved efficiency, and small solution size are important. The device can be used in mobile phones and media players for providing adjustable voltage, current and load regulation. The device can also be used in systems such as night vision goggles, notebook computers and medical systems. It is also suitable for low voltage electronics supply and voltage boost applications.

Working Principle

The TPS61280AYFFR is a step-up dc/dc converter. It converts an input voltage source ranging from 0.45V to 8V to an adjustable output voltage from 2V to 5.5V. It operates by taking pulses from the input voltage and stepping it up to the desired output voltage. The device utilizes a switched-mode operation, where it switches on and off periodically to achieve the desired output voltage. A high side switch is used in the TPS61280AYFFR, which helps to maintain the current flow and prevents any overshoot or undershoot conditions. The device also features a maximum peak current of 1.3A. The output voltage is regulated by a feedback loop which monitors the output voltage and provides feedback to the switching circuit to keep the output voltage at the desired level. The device also includes voltage/current protection, overvoltage/overcurrent protection, over temperature protection and reverse battery protection.

Conclusion

The TPS61280AYFFR is an advanced step-up switching regulator which is especially suited for low power mobile applications. The device provides excellent performance and efficiency, while providing a high degree of reliability. It is capable of adjusting the input voltage and current to the desired output voltage and current. The device provides excellent power saving capabilities coupled with efficient and reliable operation. With its low quiescent current, low shut-down current and many advanced features, the TPS61280AYFFR is a great choice for designing portable electronic devices and other applications.