General Description
The MIC2558 Dual VPP Matrix switches the four voltages required by PCMCIA (Personal Computer Memory Card International Association) card VPP1 and VPP2 Pins. The MIC2558 provides selectable 0V, 3.3V, 5.0V, or 12.0V (±5%) from the system power supply to VPP1 and VPP2. Output voltage is selected by two digital inputs per VPP pin. Output current ranges up to 120mA. Four output states, VPP, VCC, high impedance, and active logic low are available, and VPP1 is independent of VPP2. An auxiliary control input determines whether the high impedance (open) state or low logic state is asserted.

Features
• Complete PCMCIA VPP Switch Matrix in a Single IC
• Dual Matrix allows independent VPP1 and VPP2
• Digital Selection of 0V, VCC, VPP, or High Impedance Output
• No VPPOUT Overshoot or Switching Transients
• Break-Before-Make Switching
• Ultra Low Power Consumption
• 120mA VPP (12V) Output Current
• Optional Active Source Clamp for Zero Volt Condition
• 3.3V or 5V Supply Operation
• 14-Pin SOIC Package

Applications
• PCMCIA VPP Pin Voltage Switch
• Power Supply Management