AP2171AFM-7

Overview

The AP2171AFM-7 is a single-channel high-side power switch IC designed for USB 2.0 applications, manufactured by Diodes Incorporated. It operates within a supply voltage range of 2.7 V to 5.5 V and supports an output current of 500 mA with a fixed current limit of 800 mA. The device features a maximum on-resistance of 115 mOhms and utilizes a UDFN-6 surface-mount package. It includes integrated protection mechanisms such as overcurrent limiting, thermal shutdown, reverse current blocking, and under-voltage lockout (UVLO). The component functions reliably across an operating temperature range from -40°C to +85°C.

Feature Summary

• Integrates high-side switching capability with built-in fault protection including overcurrent limiting and thermal shutdown.
• Supports USB 2.0 power distribution requirements with low on-resistance for efficient power delivery.
• Features reverse current blocking to prevent backflow when the load voltage exceeds the input voltage.

Applications

• USB hub power switching
• Portable electronic device power management
• Peripheral power distribution circuits

Procurement Notes

Verify the specific package variant and suffix codes against official Diodes Incorporated documentation to ensure compatibility with design specifications. Confirm RoHS compliance status through authorized distributors or manufacturer datasheets prior to procurement. Ensure that ordering samples or production quantities align with the manufacturer's standard packaging options and lead time requirements.

Selection Notes

Select this component for applications requiring a single-channel high-side switch with moderate current capacity up to 500 mA. Consider the UDFN-6 package for space-constrained designs. Evaluate the 115 mOhm on-resistance against system efficiency needs. Ensure the 2.7 V minimum operating voltage matches the system's power rail capabilities and verify that the 800 mA current limit provides adequate margin for inrush currents.

Part Context

The AP2171AFM-7 belongs to the AP2171 series of power switch ICs from Diodes Incorporated. This series focuses on providing reliable power distribution solutions for USB and portable electronics. The AFM-7 variant specifically denotes the single-channel configuration in the UDFN-6 package, distinguishing it from multi-channel or differently packaged counterparts within the same family.

FAQ

What is the maximum continuous output current for the AP2171AFM-7?

The maximum continuous output current is 500 mA.

Does the AP2171AFM-7 support reverse current flow?

No, the device includes reverse current blocking functionality to prevent current from flowing back into the source.