Features and Benefits

  • Digital Selection of 0V, VCC, 12V or Hi-Z
  • Output Current Capability: 120mA
  • Internal Current Limiting and Thermal Shutdown
  • Automatic Switching from 3.3V to 5V
  • Powered from Unregulated 13V to 20V Supply
  • Logic Compatible with Standard PCMCIA Controllers
  • Output Capacitors: 1µF
  • Quiescent Current in Hi-Z or 0V Mode: 60µA
  • Independent VPP Valid Status Feedback Signals

Product Details

The LT1313 is a member of the Analog Devices PCMCIA driver/regulator family. It provides 0V, 3.3V, 5V, 12V and Hi-Z regulated power to the VPP pins of two PCMCIA card slots from a single unregulated 13V to 20V supply. When used in conjunction with a PC Card Interface Controller, the LT1313 forms a complete minimum component-count interface for palmtop, pen-based and notebook computers. The two VPP output voltages are independently selected by four logic compatible digital inputs which interface directly with industry standard PC Card Interface Controllers.

Automatic 3.3V to 5V switching is provided by two independent comparators which continuously monitor each PC card Vcc supply voltage and automatically adjust the VPP output to match the associated Vcc pin voltage when the VPP = Vcc mode is selected.

Two open-collector VPP VALID outputs are provided to indicate when the VPP outputs are in regulation at 12V.

The LT1313 is available in 16-pin SO packaging.


  • Notebook Computers
  • Palmtop Computers
  • Pen-Based Computers
  • Handi-Terminals
  • Bar-Code Readers
  • Flash Memory Programming

Product Lifecycle icon-not-recommended Not Recommended for New Designs

This designates products ADI does not recommend broadly for new designs.

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

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