The ACT4533AYH-T is a high-efficiency, synchronous step-down DC-DC converter manufactured by Active-Semi International Inc. This converter is designed to provide a stable and efficient power supply for a variety of electronic devices. It is capable of delivering a high output current while maintaining high efficiency across a wide range of operating conditions.

Applications

• Point-of-load DC-DC conversion
• Portable devices
• Battery-powered equipment
• Power supplies for microcontrollers
• Industrial control systems

Features

• High efficiency synchronous rectification
• Wide input voltage range
• Adjustable output voltage
• Integrated power MOSFETs
• Overcurrent and overtemperature protection

Benefits

• Extended battery life in portable devices
• Reduced power dissipation
• Stable output voltage regulation
• Simplified circuit design
• Enhanced system reliability

Technical Specifications

The ACT4533AYH-T typically operates with an input voltage range of 4.5V to 24V and can deliver an adjustable output voltage from 0.8V up to VIN. It features integrated high-side and low-side MOSFETs for synchronous rectification, which improves efficiency. The switching frequency is typically around 500 kHz. Protection features include overcurrent protection (OCP) and overtemperature protection (OTP). It is typically available in a compact package such as QFN.

This DC-DC converter is an excellent choice for applications requiring high efficiency and stable power delivery. Its integrated features and protection mechanisms simplify design and enhance the reliability of the overall system. The wide input voltage range makes it suitable for various power supply configurations.