AP2111SG-13

Overview

The AP2111SG-13 is a single-channel high-side power switch IC designed for USB power distribution applications. It supports an input voltage range of 2.7 V to 5.5 V and delivers a continuous output current of 2 A. The device features a maximum on-resistance of 115 mOhms and includes a fixed current limit of 2.45 A. Key operational parameters include a maximum rise time of 50 us and a maximum fall time of 4 us. It operates within a temperature range of -35°C to +85°C and is housed in an SOIC-8 surface-mount package.

Feature Summary

• Integrated current limiting and thermal protection mechanisms ensure safe operation during fault conditions.
• Controlled rise time functionality minimizes inrush currents, supporting hot-swap compatibility.
• Built-in undervoltage lockout prevents improper operation at low supply voltages.

Applications

• USB peripheral power switching
• Hot-swap circuit protection
• Power distribution in portable electronics

Procurement Notes

Verify the specific suffix 'SG-13' against the manufacturer's official datasheet to confirm the exact tape-and-reel packaging configuration and lead-free compliance status. Ensure that the SOIC-8 footprint matches the design requirements, as package dimensions can vary slightly between manufacturers. Cross-reference the operating temperature range with system constraints to validate suitability for the intended environment.

Selection Notes

Select this component when a single-channel solution with a 2 A continuous load capacity is required for USB-based systems. The 115 mOhms on-resistance offers a balance between conduction losses and cost compared to lower-resistance alternatives. Consider the 50 us rise time for applications requiring controlled power-up sequences to prevent bus disturbances.

Part Context

This part belongs to the AP2111 series of USB current-limited power switches manufactured by Diodes Incorporated. The series is optimized for Universal Serial Bus (USB) applications, providing integrated protection features such as over-current and thermal shutdown. It serves as a critical interface component for managing power delivery to downstream peripherals while maintaining system stability.

Replacement Considerations

Direct substitutes may include other single-channel 2 A USB power switches from Diodes Incorporated or competitors, provided they match the SOIC-8 package and electrical specifications. Verify pin compatibility and thermal performance before substitution.

FAQ

What is the typical response time for the current limit feature?

The datasheet specifies a maximum rise time of 50 us and a maximum fall time of 4 us, which governs the switching speed rather than the instantaneous fault response time.

Does the AP2111SG-13 support reverse current flow?

As a high-side P-channel switch, it inherently blocks reverse current when turned off, but specific reverse current handling capabilities should be verified in the full electrical characteristics section of the datasheet.