The ACT4525YH-T is a high-efficiency, wide input voltage range, synchronous buck converter from Qorvo. It's designed for applications requiring a compact and efficient power solution. This device integrates a high-side and low-side MOSFET to minimize external component count and maximize efficiency. The ACT4525YH-T features a constant-on-time control scheme, enabling fast transient response and stable operation over a wide range of input voltages and load currents.

Applications:

• Automotive applications: Car chargers, infotainment systems, and other in-vehicle power supplies.
• Industrial power supplies: Powering sensors, microcontrollers, and communication interfaces in industrial automation systems.
• Battery-powered devices: Portable electronics, power tools, and handheld devices.
• Distributed power systems: Point-of-load regulation in telecom and networking equipment.
• FPGA and Microcontroller power: Provides efficient power for core and I/O voltages.

Features:

• Wide Input Voltage Range: Operates from 4.5V to 40V, accommodating a variety of power sources.
• High Efficiency: Synchronous rectification minimizes power losses, achieving efficiencies up to 95%.
• Adjustable Output Voltage: Output voltage can be adjusted using external resistors, allowing for flexible design.
• Integrated MOSFETs: Reduces external component count and simplifies layout.
• Constant-On-Time Control: Provides fast transient response and stable operation.
• Overcurrent Protection (OCP): Protects the device and the load from overcurrent conditions.
• Overvoltage Protection (OVP): Prevents the output voltage from exceeding a safe level.
• Thermal Shutdown Protection: Protects the device from overheating.
• Frequency Foldback: Improves efficiency at light loads.

Benefits:

• Increased System Efficiency: Synchronous rectification minimizes power losses, leading to longer battery life or reduced heat dissipation.
• Reduced Component Count: Integrated MOSFETs simplify the design and reduce the board space.
• Improved Transient Response: Constant-on-time control provides fast response to load changes, ensuring stable operation.
• Enhanced System Reliability: Overcurrent, overvoltage, and thermal shutdown protection features protect the device and the load from fault conditions.
• Flexible Design: Adjustable output voltage allows for customization to meet specific application requirements.
• Reduced EMI: Designed to minimize electromagnetic interference.

Additional Details:

The ACT4525YH-T is available in a compact, thermally enhanced package. It offers excellent thermal performance and is suitable for applications with limited board space. The device is also compliant with RoHS and REACH environmental standards. Switching frequency is internally set, which simplifies design and minimizes external component selection. It is an excellent choice for high-performance, space-constrained applications.