Features and Benefits

  • Power Path Management for Systems with Multiple DC Sources
  • All N-Channel Switching to Reduce Power Losses and System Cost
  • Switches and Isolates Sources Up to 30V
  • Adaptive High Voltage Step-Up Regulator for N-Channel Gate Drive
  • Capacitor Inrush and Short-Circuit Current Limited
  • User-Programmable Timer to Limit Switch Dissipation
  • Small Footprint: 16-Pin Narrow SSOP

Product Details

The LTC1473 provides a power management solution for single and dual battery notebook computers and other portable equipment. The LTC1473 drives two sets of back-to-back N-channel MOSFET switches to route power to the input of the main system switching regulator. An internal boost regulator provides the voltage to fully enhance the logic level N-channel MOSFET switches. The LTC1473 senses current to limit surge currents both into and out of the batteries and the system supply capacitor during switch-over transitions or during fault conditions. A user-programmable timer monitors the time the MOSFET switches are in current limit and latches them off when programmed time is exceeded. A unique "2-diode mode" logic ensures system start-up regardless of which input receives power first.


  • Notebook Computers
  • Portable Instruments
  • Handi-Terminals
  • Portable Medical Equipment
  • Portable Industrial Control Equipment

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (1)

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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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Evaluation Boards Pricing displayed is based on 1-piece.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.