MIC2564A-0BSM

Overview

The MIC2564A-0BSM is a dual serial PCMCIA/CardBus power switch manufactured by Microchip Technology. It integrates four N-channel power switches with a maximum continuous current of 120mA per channel. The device operates within a supply voltage range of 3V to 5.5V and is housed in a 24-pin SSOP package. Designed for controlling VCC and VPP voltages, it features reverse current protection and soft-start capabilities to manage inrush currents during power-up sequences.

Feature Summary

• Dual serial interface control for managing two PC Card slots
• Integrated reverse current protection to prevent backflow
• Soft-start functionality limits inrush current during activation

Applications

• PCMCIA card slot power management
• CardBus expansion slot voltage regulation
• Portable computer power distribution systems

Procurement Notes

Verify the specific suffix '0BSM' against the manufacturer's latest datasheet to confirm pinout compatibility and package dimensions. Ensure the component meets the required operating temperature range of -40°C to +85°C for your specific application environment. Cross-reference the part number with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when designing systems requiring independent control of multiple PCMCIA or CardBus slots via a serial interface. It is suitable for applications needing precise voltage regulation for both VCC and VPP rails. Consider the 24-SSOP package constraints and thermal dissipation requirements when laying out the PCB for optimal performance.

Part Context

This part belongs to the MIC2564 series of power switching matrices designed specifically for portable computing environments. It replaces older discrete solutions by integrating multiple switches and control logic into a single IC. The series is widely used in legacy laptop and industrial handheld devices requiring robust power sequencing for expansion cards.

Replacement Considerations

Direct substitutes include the MIC2564A-0YSM variant, which shares similar functional characteristics but may differ in packaging or tape-and-reel specifications. Verify electrical parameters and pin configurations before substitution to ensure system compatibility.