MIC2563A-0BSM

Overview

The MIC2563A-0BSM 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 provides up to 1A output current for VCC and 250mA for VPP. It operates within a temperature range of -40°C to +85°C and is housed in a 28-pin SSOP package. The controller features self-biasing for 3.3V/5V outputs without requiring a +12V bias supply.

Feature Summary

• Integrates complete power switching matrix for two PC Card/CardBus sockets within a single package.
• Provides fault protection including fixed current limiting and over-temperature shutdown.
• Ensures stable power transitions with no shoot-through or switching transients using make-before-break logic.
• Operates with ultra-low standby current consumption to extend battery life in portable systems.

Applications

• Dual-slot PCMCIA and CardBus socket power management
• Data collection systems and machine control data input
• Barcode data collection devices

Procurement Notes

Verify the specific suffix '0BSM' against the manufacturer's official documentation to confirm pinout compatibility and logic table requirements. Confirm that the component lifecycle status is acceptable for your design timeline, as availability may vary. Ensure the 28-pin SSOP package dimensions match your PCB footprint specifications before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring independent power control for two PCMCIA or CardBus slots. It is suitable for applications needing precise voltage selection between 3.3V and 5.0V without external bias supplies. Consider its thermal protection features for environments where heat dissipation is critical. Verify that the digital input logic levels are compatible with your system's microcontroller or host interface.

Part Context

The MIC2563A-0BSM is part of the MIC2563A family, an enhanced version of the MIC2563. It offers lower on-resistance and includes VCC pull-down clamping in shutdown mode. This series is designed specifically for portable computing peripherals, providing a compact solution for managing complex power sequencing requirements in legacy expansion slot interfaces.

Replacement Considerations

The MIC2563A-1BSM is a documented alternative within the same family, differing primarily in logic configuration. Verify the specific logic table requirements for your application before substituting. No other direct cross-references are confirmed in public documentation.