Linear Technology AN60-1 PCMCIA Card and Socket Power Management Application Note

About this manual

The document outlines the specific power delivery requirements defined by the Personal Computer Memory Card International Association (PCMCIA) specification. It highlights that the VCC supply must switch between 3.3V or 5V, while the VPP supply must source 12V, 3.3V, 5V, 0V, and a high-impedance state to accommodate various card types like flash memory drives.

What's inside

• Introduction
• PCMCIA Socket Power Management
• Voltage Switching Requirements
• Additional Practical Considerations
• LTC1472 Fully Protected Switch Matrix

Frequently asked questions

What are the voltage requirements for the VCC supply?

The VCC supply must provide either 3.3V or 5V.

What are the voltage requirements for the VPP supply?

The VPP supply must source 12V, 3.3V, 5V, 0V and realize a high impedance state.

What is the maximum current rating for the VCC socket?

The industry standard maximum current that the socket will support is 1A.

What protection features does the LTC1472 include?

It includes SafeSlot TM protection with built-in current limiting and thermal shutdown.