AP2191AW-7

Overview

The AP2191AW-7 is a single-channel P-channel high-side power switch manufactured by Diodes Incorporated. It is designed for USB and hot-swap applications, supporting an input voltage range of 2.7V to 5.5V with a maximum output current of 1.5A. The device features a typical on-resistance of 90 milliohms and includes integrated fault protection such as fixed current limiting, over-temperature shutdown, reverse current blocking, and under-voltage lockout. It utilizes a 6-UFDFN package with exposed pad.

Feature Summary

• Integrated high-side power switching optimized for USB port protection
• Built-in fault management including current limit, thermal shutdown, and reverse current blocking
• Active-high enable control with low shutdown current consumption
• Fault flag output with deglitch capability to prevent false reporting

Applications

• Consumer electronics such as LCD TVs, monitors, and game machines
• Communication devices including set-top boxes, GPS units, and smartphones
• Computing peripherals like laptops, desktops, servers, printers, docking stations, and hubs

Procurement Notes

Verify the specific suffix 'AW' against official Diodes Incorporated documentation to confirm pinout and electrical specifications match the standard AP2191 family. Ensure the component meets RoHS compliance and halogen-free requirements if specified for your assembly process. Cross-reference the datasheet for exact thermal resistance values and recommended soldering profiles for the U-DFN2018-6 package.

Selection Notes

Select this component when a single-channel high-side switch with 1.5A capacity is required for USB or similar bus architectures. Consider the 90mΩ on-resistance for efficiency needs and the 2.7V to 5.5V operating range for compatibility with standard logic levels. Evaluate the 6-pin DFN footprint for space-constrained designs requiring surface-mount integration.

Part Context

This part belongs to the AP2191 series of single-channel current-limited power switches from Diodes Incorporated. The series is engineered for robust load control in portable and computing applications. It shares functional similarities with other members like the AP2161 and AP2171, differing primarily in enable polarity and specific package availability within the broader product line.

Replacement Considerations

Publicly confirmed substitute part numbers for the AP2191AW-7 are not available in the provided source material. Verify compatibility with alternative models only through direct datasheet parameter comparison.