Product Overview: AP2181 from Diodes Incorporated

The AP2181 from Diodes Incorporated is a high-performance, single-channel current-limited integrated high-side power switch optimized for Universal Serial Bus (USB) and other hot-swap applications. This power switch is designed to protect systems and USB ports from current overloads and short circuits, providing a reliable solution for controlling USB peripherals.

Key Features

• Current Limiting: The AP2181 offers precise current limiting to protect the host device from overcurrent conditions. It is capable of a continuous current of up to 2.1A, making it suitable for a wide range of USB peripherals.
• Fast Response Time: With a fast response time to fault conditions, the device promptly shuts down the output, preventing damage to connected devices.
• Reverse Current Blocking: This feature prevents current from flowing backward into the switch when it is powered off, thereby protecting the upstream devices from potential damage.
• Over-Temperature Protection: The AP2181 includes an over-temperature protection circuit that will shut down the switch to prevent excessive heat build-up, thereby ensuring the safety of your system.
• Under-Voltage Lockout (UVLO): The UVLO feature ensures that the switch remains off when the input voltage is below a certain threshold, preventing erratic operation.

Applications

The AP2181 is suitable for a variety of applications, especially where power distribution and protection are crucial. Typical applications include:

• USB Hubs
• USB Peripherals
• Hot-Swap Supplies
• Portable Electronics
• Battery-Charger Circuits

Product Specifications

The device is offered in a small SOT25 package and operates across a wide voltage range of 2.7V to 5.5V, making it versatile for various USB-powered devices. With built-in fixed or adjustable current-limiting options, the AP2181 provides design flexibility to meet specific system requirements.

Quality and Reliability

Diodes Incorporated is known for its commitment to quality, and the AP2181 is no exception. It is designed to meet the high reliability and robustness standards required in industrial and consumer electronic products.