MIC2563A-1BSM

Overview

The MIC2563A-1BSM is a dual-slot PCMCIA/CardBus power controller manufactured by Microchip Technology. It manages VCC and VPP supply pins, switching between three VCC voltages (0V, 3.3V, 5.0V) and five VPP states (OFF, 0V, 3.3V, 5V, 12.0V). The device provides up to 1A output current for VCC and 250mA for VPP. It features low standby current of 0.3µA typical in sleep mode. The component utilizes self-biased switches requiring no +12V bias for 3.3V or 5V outputs. It includes current limiting, over-temperature shutdown, and shoot-through lockout protection. The part is housed in a standard 28-pin SSOP package.

Feature Summary

• Integrates complete dual-slot power switch matrix for PC Card and CardBus slots within a single package.
• Employs self-biased high-current VCC and medium-current VPP switches that eliminate the need for external 12V bias supplies.
• Provides comprehensive protection mechanisms including output current limiting, thermal shutdown, and shoot-through prevention during switching operations.
• Ensures stable power transitions with controlled rise/fall times and break-before-make switching logic to prevent voltage glitches.

Applications

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

Procurement Notes

Verify the specific suffix '1BSM' against the manufacturer's official datasheet to confirm pinout compatibility and electrical specifications. Ensure the procurement source provides valid traceability documentation. Confirm RoHS compliance status if required by your manufacturing standards. Cross-reference the 28-pin SSOP package dimensions with your PCB footprint library to ensure mechanical fit. Validate that the supplier is an authorized distributor to guarantee component authenticity.

Selection Notes

Select this component when designing systems requiring integrated control for two PCMCIA or CardBus slots. It is suitable for battery-powered applications due to its ultra-low standby current consumption. Choose this IC if the design requires eliminating external bias generation circuits for VCC and VPP switching. It is appropriate for environments needing robust protection against overcurrent and thermal events without additional discrete components.

Part Context

The MIC2563A-1BSM belongs to the MIC2563 family of power controllers designed specifically for portable computing peripherals. It serves as an enhanced version of the original MIC2563, offering improved on-resistance and added VCC pull-down clamping in shutdown mode. This evolution supports stricter power management requirements in modern mobile devices while maintaining backward compatibility with standard PCMCIA logic controllers.

Replacement Considerations

The MIC2563A is an improved variant of the MIC2563. Verify pin-for-pin compatibility before substituting older MIC2563 units. No other direct public substitutes are confirmed in available documentation.