AP2171DWG-7

Overview

The AP2171DWG-7 is a single-channel high-side power switch IC manufactured by Diodes Incorporated, designed for USB 2.0 power distribution applications. It features a P-channel output capable of delivering up to 1A continuous load current with a typical on-resistance of 95 milliohms and a maximum of 115 milliohms. The device operates within a supply voltage range of 2.7V to 5.5V and includes integrated fault protection mechanisms such as fixed current limiting at 1.5A, overtemperature shutdown, reverse current blocking, and under-voltage lockout. It utilizes an open/switch interface with non-inverted input logic and is housed in a surface-mount SOT-25 package.

Feature Summary

• Integrates comprehensive fault protection including fixed current limiting, thermal shutdown, reverse current blocking, and under-voltage lockout.
• Features low on-resistance for efficient power delivery in high-side switching configurations.
• Supports USB 2.0 standards with fast rise and fall times for rapid load connection and disconnection.

Applications

• USB 2.0 port power switching and distribution
• Overcurrent protection for peripheral devices
• Hot-plug capable power management circuits

Procurement Notes

Verify the specific suffix DWG-7 against the manufacturer's latest datasheet to confirm the exact package type (SOT-25) and tape-and-reel quantity specifications. Ensure compatibility with system voltage requirements ranging from 2.7V to 5.5V. Confirm that the non-inverted input logic aligns with the control interface design. Cross-reference the RoHS compliance status and lead-free status with current regulatory documentation before finalizing procurement orders.

Selection Notes

Select this component when a single-channel high-side switch with integrated protection is required for 5V systems. The SOT-25 package offers a compact solution for space-constrained designs. Consider the 1A current rating and 115mOhm maximum resistance for efficiency calculations. Verify that the -40°C to +85°C operating temperature range meets the environmental conditions of the target application.

Part Context

The AP2171 series comprises high-side power switches designed for portable electronics and USB applications. This specific part belongs to the AP2171 family, which focuses on providing robust protection features in small surface-mount packages. It serves as a dedicated power distribution element, replacing discrete MOSFET solutions to simplify circuit design and improve reliability in consumer electronic devices.

Replacement Considerations

The AP2191DWG-7 is a documented substitute within the same product line. Verify pinout compatibility and ensure the replacement maintains the required 1A current handling and protection feature set for the specific application context.