MIC2561-0BM-TR

Overview

The MIC2561-0BM-TR is a PCMCIA Card Socket Switch Matrix controller designed for managing power distribution in CardBus and PCMCIA applications. It features two N-channel outputs with a low-side configuration, supporting load voltages of 3.3V, 5V, and 12V. The device operates with a 3:2 input-to-output ratio and delivers a maximum output current of 200mA per channel. Key electrical parameters include a typical on-resistance of 70 milliohms and fixed current limiting protection. It functions without an external Vcc supply and includes over-temperature fault protection. The component is housed in a 14-SOIC package and supports a junction temperature range of -40°C to 85°C.

Feature Summary

• Integrates a switch matrix to route system power supply voltages to VCC and VPP lines for PCMCIA sockets.
• Provides logic interface control for switching between OFF, 3.3V, and 5.0V states automatically.
• Includes built-in status flag output to indicate operational state or fault conditions.
• Features fixed current limiting and over-temperature protection mechanisms for circuit safety.

Applications

• PCMCIA Card Socket power management
• CardBus application power switching
• System voltage routing for portable electronics

Procurement Notes

Verify the specific suffix '0BM' against the manufacturer's official datasheet to confirm pinout compatibility and thermal specifications. Ensure that the 14-SOIC footprint matches the target PCB design. Confirm that the fixed current limit and over-temperature thresholds align with the system's safety requirements before finalizing procurement.

Selection Notes

Select this component when a dedicated IC is required to manage multiple voltage rails for PCMCIA interfaces without complex discrete logic. The integrated 3:2 switching capability simplifies board layout compared to individual switches. Consider the 70 milliohm on-resistance for efficiency calculations and verify that the 200mA output current meets the peak load demands of the connected card socket.

Part Context

This part belongs to the Microchip MIC2561 family of PCMCIA switch controllers. It serves as a specialized power distribution solution for legacy computing interfaces. The device replaces multiple discrete MOSFETs and control logic, offering a compact alternative for managing VCC and VPP lines in CardBus systems. It is distinct from general-purpose power switches due to its specific voltage sequencing and socket integration features.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with any potential alternatives by cross-referencing pin configurations, voltage ratings, and thermal performance characteristics directly with the manufacturer's replacement guide.

FAQ

Does the MIC2561-0BM-TR require an external Vcc supply?

No, the device does not require an external Vcc or Vdd supply voltage to operate.

What is the typical on-resistance of the switches?

The typical on-resistance is 70 milliohms.