Introducing the AP2191AW-7 Micro Power Switch from Diodes Incorporated

The AP2191AW-7 is a high-performance, single-channel current-limited integrated high-side power switch from Diodes Incorporated, designed for USB and other hot-swap applications. This power switch is optimized for self-powered and bus-powered Universal Serial Bus (USB) applications.

Featuring a 2.7V to 5.5V input voltage range, the AP2191AW-7 caters to a wide array of USB applications. It is capable of delivering up to 1A of continuous current, which makes it suitable for handling standard USB power requirements. This device is particularly designed to provide over-current protection for systems that must comply with USB power specifications.

Key Features:

• Current Limiting: The AP2191AW-7 provides precise current limiting to protect the host device from over-current conditions. It is capable of limiting the output current to a safe level by switching into a constant-current mode when the output load exceeds the current limit threshold.
• Fast Transient Response: With its built-in fast transient response, the AP2191AW-7 ensures that the USB devices can operate effectively under varying load conditions without risk of damage or data loss.
• Reverse Current Blocking: This power switch has a reverse current blocking feature, which prevents any current from flowing backward into the source when it is powered down or when the input voltage falls below the output voltage.
• Thermal Shutdown Protection: In addition to current limiting, the device includes thermal shutdown protection to prevent overheating, enhancing the safety and reliability of the overall system.
• Controlled Rise Time: The AP2191AW-7 is also characterized by a controlled rise time, reducing the inrush current and thus minimizing the impact on the input power source during turn-on.

The AP2191AW-7 is available in a small SOT25 package, making it an ideal solution for space-constrained applications. Its built-in charge pump requires no external components, which simplifies the design and reduces the overall bill of materials.

With its comprehensive protection features and robust performance, the AP2191AW-7 from Diodes Incorporated stands out as a reliable and efficient solution for power distribution and over-current protection in USB interfaces and other hot-swappable devices.