AP2151WG-7

Overview

The AP2151WG-7 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 and provides a continuous output current of 500 mA with an 800 mA current limit. The device features a maximum on-resistance of 115 mOhms, ensuring efficient power distribution. Key timing parameters include a maximum turn-on time of 50 µs and a maximum turn-off time of 10 µs. It is housed in a SOT-25 surface-mount package and functions reliably across an operating temperature range of -40 °C to +85 °C.

Feature Summary

• Integrated high-side switching optimized for USB 2.0 compliance and hot-swap operations
• Built-in protection mechanisms including current limiting, thermal shutdown, and short-circuit protection
• Controlled rise time functionality to minimize inrush currents during activation
• Undervoltage lockout ensures stable operation under varying supply conditions

Applications

• USB port power distribution and overcurrent protection
• Hot-swap peripheral connection circuits
• Battery-powered device power management
• General-purpose load switching in consumer electronics

Procurement Notes

Verify the specific suffix WG-7 corresponds to the SOT-25 package configuration when sourcing. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor certificates prior to procurement. Ensure that the ordering part number matches the required pinout and electrical specifications for the target application design.

Selection Notes

Select this component for designs requiring a single-channel high-side switch with moderate current capacity up to 500 mA. It is suitable for space-constrained PCB layouts due to its compact SOT-25 footprint. Consider alternative packages such as U-DFN2018-6 or SOIC-8 if different thermal or mechanical constraints apply to the system architecture.

Part Context

This device belongs to the AP2151 series of power switches manufactured by Diodes Incorporated. The series offers various package options including MSOP-8EP, SOIC-8, and U-DFN2018-6 to accommodate different board space requirements. All variants share core electrical characteristics but differ in physical dimensions and thermal performance profiles.

Replacement Considerations

Direct substitutes within the same family include AP2151AW-7 (SOT-23-5), AP2151FMG-7 (U-DFN2018-6), and AP2151MPG-13 (MSOP-8). Verify pin compatibility and package dimensions before substitution to ensure proper fit and function.