MIC2564A-1BTS

Overview

The MIC2564A-1BTS is a dual-slot PC Card and CardBus power controller manufactured by Microchip Technology. It integrates four high-side N-channel switches to manage power distribution for two card slots using a single surface-mount device. The component features a 3:4 ratio-input to output configuration, allowing control of four outputs via serial interface signals. It supports load voltages of 3.3V, 5V, and 12V with a maximum output current of 120mA per channel. Packaged in a compact 24-TSSOP format, it simplifies integration into portable computing systems requiring efficient power management for expansion cards.

Feature Summary

• Controls two card slots from one surface mount device
• Standard 3-wire serial control data input
• High-efficiency, low-resistance switches

Applications

• PCMCIA power management
• CardBus power control
• Portable computer expansion slot power distribution

Procurement Notes

Verify the specific suffix '1BTS' corresponds to the tape-and-reel packaging variant if required for automated assembly processes. Confirm that the 24-TSSOP package dimensions align with your PCB footprint design constraints. Ensure compatibility with the 3-wire serial interface protocol used in your system architecture before finalizing procurement decisions.

Selection Notes

Select this component when designing systems requiring independent power control for multiple PCMCIA or CardBus slots within a limited board area. The integrated serial interface reduces pin count compared to parallel alternatives. Consider the 120mA current limit per channel when sizing thermal solutions and ensuring adequate trace width for the connected loads.

Part Context

This part belongs to the MIC2564 family of dual-slot power controllers designed for mobile computing applications. It replaces discrete switch arrangements, reducing component count and board space. The device addresses the need for reliable power sequencing and protection in environments where hot-swappable memory and I/O cards are frequently utilized.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify functional equivalence carefully if considering alternative manufacturers, as serial interface timing and voltage thresholds may differ significantly between vendors.