MIC2563A-1YSM-TR

Overview

The MIC2563A-1YSM-TR is a dual-slot PCMCIA/CardBus socket power controller manufactured by Microchip Technology. It manages VCC and VPP voltage switching for two PC card slots, supporting VCC levels of 0V, 3.3V, and 5.0V, and VPP levels of OFF, 0V, 3.3V, 5V, or 12.0V. The device features a 28-pin SSOP package with a typical static current of 0.3µA in standby mode. Output currents reach up to 1A for VCC and 250mA for VPP. It includes built-in current limiting and over-temperature shutdown protection.

Feature Summary

• Integrates complete dual-slot power switching matrix within a single package to reduce board space.
• Utilizes self-biased switches that eliminate the need for external +12V bias supplies.
• Ensures stable power transitions through break-before-make switching logic without shoot-through.
• Provides comprehensive protection via output current limiting and thermal shutdown mechanisms.

Applications

• Dual-slot PCMCIA and CardBus socket power control
• Data collection systems requiring portable storage interfaces
• Machine control data input systems

Procurement Notes

Verify the specific suffix '1YSM-TR' against official Microchip documentation to confirm the tape-and-reel packaging configuration and lead-free status. Ensure compatibility with system logic controllers regarding input signal levels. Cross-reference the manufacturer part number to distinguish between standard and environmental variants, as suffixes may indicate packaging or material differences rather than functional changes.

Selection Notes

Select this component when designing systems requiring integrated power management for two PCMCIA or CardBus slots. It is suitable for applications needing low standby current to preserve battery life in portable devices. The device simplifies design by removing the need for external bias generation circuits. Verify that the required VPP voltage levels align with the supported options of 0V, 3.3V, 5V, or 12V.

Part Context

This part belongs to the MIC2563A family of power switch ICs designed specifically for PCMCIA and CardBus applications. It serves as an enhanced version of the MIC2563, offering lower on-resistance and improved power efficiency. The series is widely used in legacy computing hardware and industrial equipment requiring robust PC card interface power sequencing and protection.

Replacement Considerations

The MIC2563A is an improvement over the MIC2563. Check datasheets for direct pin-compatible alternatives if sourcing from different manufacturers, ensuring identical voltage ratings and current capabilities are maintained for system stability.