The APE1702S-33 is a high-efficiency synchronous step-down DC-DC converter manufactured by Advanced Power Electronics Corp (APEC). It is designed to provide a regulated output voltage from a higher input voltage with high efficiency, making it suitable for a wide range of portable devices and power management applications. The '33' in the part number indicates that this is a 3.3V output version.

Applications

• Portable Devices: Used in smartphones, tablets, and other battery-powered devices.
• Power Banks: Employed in power banks to efficiently convert voltage and provide a stable output.
• Point-of-Load Regulation: Used for local voltage regulation in electronic systems.
• Wireless Chargers: Implemented in wireless charging circuits for efficient power conversion.
• Industrial Controls: Applied in industrial control systems for stable power supply.

Features

• High Efficiency: Synchronous rectification minimizes power losses and improves efficiency.
• Wide Input Voltage Range: Supports a wide range of input voltages for versatile applications.
• Fixed Output Voltage: Provides a stable and regulated 3.3V output.
• Over-Current Protection (OCP): Protects the device and the load from excessive current.
• Short-Circuit Protection (SCP): Shuts down the converter in case of a short circuit.

Benefits

• Extended Battery Life: High efficiency extends battery life in portable devices.
• Stable Output Voltage: Provides a stable and regulated output voltage for reliable operation.
• Robust Protection: Over-current and short-circuit protection ensure safe operation.
• Compact Design: Small form factor allows for integration in space-constrained applications.
• Simplified Design: Requires minimal external components for operation.

The APE1702S-33 typically operates with an input voltage range of 4.5V to 18V and provides a fixed output voltage of 3.3V. It can deliver a continuous output current of up to 2A. The switching frequency is typically in the MHz range, allowing for small external components. The device is available in a compact surface-mount package and includes thermal shutdown protection to prevent overheating. It is designed for high-efficiency and low-noise operation.