MIC2549A-1YN

Description：IC PWR SWITCH N-CHANNEL 1:1 8DIP
Series：-
Mfr：Microchip Technology
Package：Tube

SKU:fa5f5a5319aa Category: Power Distribution Switches, Load Drivers Brand: Microchip Technology

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Product introduction

Product Detailed Parameters

Description：IC PWR SWITCH N-CHANNEL 1:1 8DIP
Series：-
Mfr：Microchip Technology
Package：Tube
Switch Type：USB Switch
Number of Outputs：1
Ratio - Input:Output：1:01
Output Configuration：High Side
Output Type：N-Channel
Interface：On/Off
Voltage - Load：2.7V ~ 5.5V
Voltage - Supply (Vcc/Vdd)：Not Required
Current - Output (Max)：3A
Rds On (Typ)：35mOhm
Input Type：Non-Inverting
Features：Slew Rate Controlled, Status Flag
Fault Protection：Current Limiting (Adjustable), Over Temperature, Reverse Current
Operating Temperature：-40°C ~ 85°C (TA)
Mounting Type：Through Hole
Supplier Device Package：8-PDIP
Package / Case：8-DIP (0.300", 7.62mm)
Grade：-
Qualification：-

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MIC2549A-1YN

Overview

The MIC2549A-1YN is a high-side power switch from Microchip Technology, optimized for low-loss DC power switching and ACPI applications. It features a programmable current limit ranging from 500 mA to 3 A and a maximum on-resistance of 50 mΩ. The device operates within a supply voltage range of 2.7 V to 5.5 V. Key electrical parameters include a maximum turn-on time of 5 ms and a maximum off-time of 25 µs. It supports operation temperatures from -40°C to +85°C.

Feature Summary

Features an internal latch that turns the output off upon thermal shutdown for robust fault control.
Includes a precision resistor-programmable output current-limit and soft-start circuit to minimize inrush current.
Provides an open-drain flag output to indicate current-limiting or thermal shutdown events to a local controller.

Applications

Advanced Configuration and Power Interface (ACPI) systems
Low-loss DC power switching
USB power distribution

Procurement Notes

Verify the specific suffix '1YN' against official Microchip documentation to confirm package type and enable signal polarity. Ensure the selected variant matches the required logic levels and thermal management needs for the target application environment.

Selection Notes

Select this component when a high-side switch with thermal shutdown latching is required. The MIC2549A-1YN is suitable for applications needing precise current limiting and fault indication. Compare against the MIC2545A if thermal latching is not necessary for the design.

Part Context

The MIC2549A-1YN belongs to the MIC2545A/2549A family of integrated high-side power switches. This series is designed as a cost-effective solution requiring few external components. The 'A' designation typically indicates specific electrical characteristics within the product line.

FAQ

What distinguishes the MIC2549A from the MIC2545A?

The MIC2549A includes an additional internal latch that turns the output off upon thermal shutdown, providing more robust fault control compared to the MIC2545A.