The ACT4523AYH-T is a high-efficiency, wide input voltage range, synchronous buck converter from Qorvo. It is designed for applications requiring a compact and efficient power solution. This device integrates both a high-side and a low-side MOSFET, reducing external component count and simplifying PCB layout. The ACT4523AYH-T utilizes a constant-on-time control architecture, providing fast transient response and stable operation over a wide range of input voltages and load currents. It also incorporates comprehensive protection features to ensure robust and reliable performance.

Applications:

• Automotive Electronics: Powering automotive infotainment systems, telematics units, and other in-cabin electronic devices.
• Industrial Control Systems: Providing regulated power to sensors, microcontrollers, and communication interfaces in industrial environments.
• Portable Devices: Powering handheld devices, battery-powered tools, and mobile communication equipment.
• Networking Equipment: Point-of-load regulation in routers, switches, and other networking devices.
• FPGA and DSP Power Supplies: Efficiently powering FPGAs, DSPs, and other digital processing units.

Features:

• Wide Input Voltage Range: Operates from 4.5V to 40V, making it suitable for a wide range of power sources.
• High Efficiency: Synchronous rectification minimizes power losses, achieving efficiencies up to 95%.
• Adjustable Output Voltage: The output voltage can be adjusted using external resistors, providing design flexibility.
• Integrated MOSFETs: Reduces external component count and simplifies PCB 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 by reducing the switching frequency.

Benefits:

• Improved System Efficiency: Synchronous rectification minimizes power losses, resulting in longer battery life or reduced heat dissipation.
• Reduced Board Space: Integrated MOSFETs simplify the design and reduce the required board area.
• Enhanced Transient Response: Constant-on-time control provides fast response to load changes, ensuring stable operation.
• Increased 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.
• Minimized EMI: Designed to minimize electromagnetic interference, reducing noise in sensitive applications.

Additional Details:

The ACT4523AYH-T is available in a compact, thermally enhanced package for optimal heat dissipation. It is RoHS compliant. The integrated features simplify design and minimize external component count, making it a cost-effective solution. The device is well-suited for applications requiring high efficiency, compact size, and robust protection features.