AP2151SG-13

Overview

The AP2151SG-13 is a single-channel high-side power switch IC from Diodes Incorporated, designed for USB and hot-swap applications. It operates within a supply voltage range of 2.7 V to 5.5 V. The device supports a continuous output current of 500 mA with an integrated current limit of 800 mA. Key electrical characteristics include a maximum on-resistance of 115 mOhms, a maximum turn-on time of 50 µs, and a maximum blanking time of 10 µs. It functions reliably across an operating temperature range of -40°C to +85°C.

Feature Summary

• Integrated protection against over-current, thermal overload, and short-circuit conditions
• Built-in undervoltage lockout ensures stable operation during power transitions
• Controlled rise time minimizes inrush current and signal noise
• Open-drain flag output provides fault indication without external components

Applications

• USB 2.0 compliant power distribution circuits
• Hot-swap peripheral connection interfaces
• Portable electronic device power management
• Consumer electronics input power switching

Procurement Notes

Verify the specific suffix 'SG-13' corresponds to the SOP-8 package variant when sourcing. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor certificates prior to final procurement decisions. Ensure the ordering part number matches the exact pin configuration and thermal requirements of the target design.

Selection Notes

Select this component for designs requiring precise current limiting and thermal protection in low-voltage environments. The single-channel architecture suits applications needing independent control of one load line. Consider the 115 mOhm on-resistance for efficiency calculations and verify that the 800 mA current limit aligns with the connected load's peak requirements to prevent nuisance tripping.

Part Context

This device belongs to the AP2151 series of integrated high-side power switches optimized for Universal Serial Bus (USB) applications. The series offers various package options including SO-8, MSOP-8EP, SOT25, and U-DFN2018. These devices are engineered to provide robust protection features while maintaining compatibility with standard USB power specifications.

Replacement Considerations

Public confirmed substitute part numbers: AP2151FMG-7, AP2151AMP-13.