TPS54231DR Buck Adjustable 800mV~25V 2A 3.5V~28V SOIC-8 DC-DC Converters SMD IC

TPS54231DR Buck Adjustable 800mV~25V 2A 3.5V~28V SOIC-8 DC-DC Converters SMD IC

The TPS54231DR is a step-down (buck) converter designed for efficient voltage regulation. This IC integrates a low-resistance high-side MOSFET, making it highly efficient in delivering power with minimal losses. It is suitable for a wide range of input voltages, from 3.5V to 28V, and provides an adjustable output voltage as low as 0.8V. Its design is focused on maintaining steady and reliable operation under various load conditions, especially for consumer electronics, industrial, and automotive applications.

This DC-DC converter uses fixed frequency current mode control, ensuring optimal performance during both line and load transients. It operates at a nominal switching frequency of 570 kHz, which helps in reducing output capacitance and simplifying external compensation design. The integration of Eco-mode allows the device to automatically skip pulses at light loads, significantly improving efficiency at low power consumption levels. Moreover, its 1μA typical shutdown current makes it an excellent choice for battery-powered applications, enhancing overall energy efficiency.

The TPS54231DR offers numerous protection features, such as thermal shutdown, current limiting, and frequency foldback, which safeguard both the converter and the load during overload or fault conditions. Additionally, it includes an adjustable soft-start function to limit inrush currents and facilitate smooth power-up sequences. Its versatility and advanced protection make it ideal for a variety of power supply designs, ranging from low-power devices to more demanding systems.

Features:

• Fixed 570 kHz switching frequency.
• 2A continuous output current capability.
• Integrated high-side MOSFET with 80 mΩ on-resistance.
• Pulse skipping Eco-mode for high efficiency at light loads.
• Adjustable slow start for controlling inrush currents.
• Programmable under-voltage lockout (UVLO).
• Thermal shutdown and cycle-by-cycle current limit protection.
• 1 μA shutdown current for battery-operated applications.
• Available in an easy-to-use SOIC-8 package.

Specifications:

Pinout Diagram:

Footprint Diagram:

Applications:

• Consumer Electronics (e.g., set-top boxes, LCD displays).
• Automotive and industrial power supplies.
• Battery charging systems.
• Distributed power systems (e.g., 5V, 12V, and 24V systems).
• Industrial and communication equipment.

Package Contents:

• 1x TPS54231DR Buck Adjustable 800mV~25V 2A 3.5V~28V SOIC-8 DC-DC Converters SMD IC

Datasheet