AP2172AFGEG-7

Overview

The AP2172AFGEG-7 is a dual-channel high-side power switch from Diodes Incorporated, optimized for USB and hot-swap applications. It features two P-channel outputs with a 1:2 input-to-output ratio, supporting a load voltage range of 2.7V to 5.5V. The device delivers a maximum output current of 1A per channel with a typical on-resistance of 85 milliohms. It includes fixed current limiting, over-temperature protection, reverse current blocking, and under-voltage lockout. The open-drain Flag output provides status indication with a 7ms deglitch capability. Operating temperatures range from -40°C to +85°C, housed in an 8-UDFN package.

Feature Summary

• Dual-channel high-side switching with integrated current and thermal limiting for USB port protection
• Active-high enable interface with low shutdown current consumption
• Fault reporting via open-drain flag output with built-in blanking time to prevent false triggering
• Reverse current blocking and controlled rise time for stable hot-swap performance

Applications

• USB hub power distribution
• Laptop and desktop docking stations
• Smartphone charging ports
• Set-top boxes and GPS devices

Procurement Notes

Verify the complete part number including the suffix FGE and reel quantity when ordering. Confirm the specific package variant matches design requirements. Check manufacturer documentation for RoHS compliance and lead-free status details. Ensure ESD handling procedures are followed during assembly due to sensitive internal circuitry. Validate supply chain authenticity through authorized distributors only.

Selection Notes

Select this component for designs requiring dual independent USB power paths with compact footprint constraints. The active-high enable logic suits microcontrollers driving high signals directly. Compare on-resistance values against thermal dissipation needs in enclosed enclosures. Consider the 85 milliohm typical resistance for efficiency calculations. Verify compatibility with system voltage rails within the 2.7V to 5.5V operating window.

Part Context

This device belongs to the AP2172 family of dual-channel power switches designed by Diodes Incorporated. It shares functional similarities with the AP2162 but differs in enable polarity, offering active-high control instead of active-low. The family targets portable electronics and computing peripherals needing robust overcurrent protection. Packaging options include SO-8 and various DFN variants for different board space requirements.

Replacement Considerations

AP2162AFGEG-7 serves as a direct pin-compatible alternative with active-low enable logic. AP2182AFGEG-7 offers higher current capacity at 1.5A with similar packaging. Verify enable signal polarity inversion if substituting with AP2162 variants. Check current limit thresholds when upgrading to higher-current models.