MIC2545A-2BN

Overview

The MIC2545A-2BN is a single-channel high-side power distribution switch manufactured by Microchip Technology. It operates within a supply voltage range of 2.7 V to 5.5 V and supports an output current up to 3 A. The device features a programmable current limit adjustable between 500 mA and 3 A, with a maximum on-resistance of 50 mΩ. Key timing specifications include a maximum turn-on time of 5 ms and a maximum blanking time of 25 μs. Designed for through-hole mounting, it functions reliably across an operating temperature range from -40°C to +85°C.

Feature Summary

• Programmable current limiting capability allows customization of protection thresholds
• High-side switching architecture simplifies load control integration
• Integrated thermal and electrical protection mechanisms ensure system reliability

Applications

• Industrial equipment power distribution
• Automotive electronic modules
• Consumer electronics load switching

Procurement Notes

Verify component authenticity through authorized Microchip distributors or certified partners. Confirm package integrity and pin alignment upon receipt. Review the official datasheet for handling precautions and storage conditions. Ensure compatibility with existing circuit designs regarding voltage levels and thermal requirements before implementation.

Selection Notes

Evaluate the required load current against the programmable limit range to ensure adequate protection. Consider the 50 mΩ on-resistance impact on power dissipation and efficiency. Verify that the 2.7 V to 5.5 V input range matches the system supply. Assess the through-hole packaging suitability for the target PCB layout and assembly process.

Part Context

This component belongs to the MIC2545A series of power switches, designed for robust load management in various electronic systems. It provides reliable high-side switching with integrated protection features. The series is known for its flexibility in current limiting settings and durability in demanding environments.

Replacement Considerations

Public sources indicate this part is obsolete. Consult Microchip for recommended alternatives or contact authorized distributors for legacy stock verification.