MIC2564A-1YTS-TR

Overview

The MIC2564A-1YTS-TR is a power distribution switch and driver IC designed for PCMCIA applications. It features a 3:4 input-to-output ratio with four N-channel outputs capable of delivering up to 120mA each. The device operates within a load voltage range of 3.3V, 5V, and 12V. It utilizes a serial interface for control and includes fixed current limit and overtemperature fault protection. The component is housed in a 24-TSSOP package and supports surface-mount installation.

Feature Summary

• Integrates a sophisticated power switching matrix to control VCC and VPP voltages for two PC Card slots
• Provides fixed current limiting and overtemperature protection for enhanced circuit reliability
• Utilizes a serial data interface for efficient control and status monitoring

Applications

• PCMCIA card slot power management
• CardBus power controller systems
• Portable computing devices requiring multi-voltage regulation

Procurement Notes

This component is officially obsolete and no longer manufactured by Microchip Technology. Procurement should focus on verifying the authenticity of existing stock from authorized distributors or certified secondary market suppliers. Ensure that any available units are genuine and have not been compromised during storage. Cross-reference with the recommended replacement part TPS2224APWP if new production designs are required.

Selection Notes

Designers should note that this specific part number is end-of-life. When selecting alternatives, prioritize components that match the 24-TSSOP footprint and serial interface requirements. Verify that substitute parts support the necessary 3:4 control ratio and output current capabilities. Consider the thermal performance and operating temperature range to ensure compatibility with the original system constraints.

Part Context

The MIC2564A series belongs to Microchip's portfolio of power distribution switches tailored for legacy PCMCIA and CardBus standards. These devices integrate multiple high-side switches controlled via a serial interface, reducing board space compared to discrete solutions. The 1YTS suffix indicates the specific tape-and-reel packaging variant of the TSSOP-24 package.

Replacement Considerations

The TPS2224APWP from Texas Instruments is listed as an available alternative. Engineers must verify pinout compatibility and electrical specifications before substitution.