1. Products
  2. Power Monitor, Control, and Protection
  3. PowerPath, Ideal Diodes, and Load Switches
  4. LTC1473L


Features and Benefits

  • Power Path Management for Systems with Multiple DC Sources
  • Switches and Isolates Sources from 3.3V to 10V
  • All N-Channel Switching to Reduce Power Losses and System Cost
  • Built-In Step-Up Regulator for N-Channel Gate Drive
  • Capacitor Inrush and Short-Circuit Current Limited
  • User-Programmable Timer Prevents Overdissipation During Current Limiting
  • Undervoltage Lockout Prevents Operation with Low Inputs
  • Small Footprint: 16-Pin Narrow SSOP

Product Details

The LTC1473L provides reliable and efficient switching between two DC power sources. This device drives two external sets of back-to-back N-channel MOSFET switches to route power to the input of a low voltage system. An internal boost regulator provides the voltage to fully enhance the logic-level N-channel MOSFET switches while an internal undervoltage lock-out circuit keeps the system alive down to 2.8V.

The LTC1473L senses current to limit inrush between 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 the programmed time is exceeded.

A unique “2-diode” logic mode ensures system start-up regardless of which input receives power first.


  • Portable Computers
  • Portable Instruments
  • Fault Tolerant Computers
  • Battery-Backup Systems
  • 3.3V/5V Power Management

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.

Tools & Simulations


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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.View our quality and reliability program and certifications for more information.

Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
LTC1473LCGN#PBF Material Declaration Reliability Data 16-Lead SSOP (Narrow 0.15 Inch)
LTC1473LCGN#TRPBF Material Declaration Reliability Data 16-Lead SSOP (Narrow 0.15 Inch)
Wafer Fabrication Data R336 Reliability Data

PCN-PDN Information

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Sample & Buy

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Buy Now Pricing

(**) Displayed Buy Now Price and Price Range is based on small quantity orders.


List Pricing

(*)The 1Ku 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. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


Lead Times

Please see the latest communication from our CCO regarding lead times.



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