LT4180 - Virtual Remote Sense Controller

Features

  • Tight Load Regulation with Highly Resistive Cables without Requiring Remote Sense Wiring
  • Compatible with Isolated and Nonisolated Power Supplies
  • ±1% Internal Voltage Reference
  • 5mA Sink Current Capability
  • Soft-Correct Reduces Turn-On Transients
  • Undervoltage and Overvoltage Protection
  • Pin-Programmable Dither Frequency
  • Optional Spread Spectrum Dither
  • Wide VIN Range: 3.1V to 50V
  • 24-Pin SSOP Package

Typical Application

LT4180 Typical Application
LT4180 Typical Application

Description

The LT4180 solves the problem of providing tight load regulation over long, highly resistive cables without requiring an additional pair of remote sense wires. This Virtual Remote Sense device continuously interrogates the line impedance and corrects the power supply output voltage via its feedback loop to maintain a steady voltage at the load regardless of current changes.

The LT4180 is a full-featured controller with 5mA optoisolator sink capability, under/overvoltage lockout, soft-start and a ±1% internal voltage reference. The Virtual Remote Sense feature set includes user-programmable dither frequency and optional spread spectrum dither.

The LT4180 works with any topology and type of isolated or nonisolated power supply, including DC/DC converters and adjustable linear regulators.

The LT4180 is available in a 24-pin, SSOP package.

Packaging

For complete and up to date package information and drawings, please refer to our packaging page

SSOP-24

LT4180 Package Drawing

Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LT4180EGN#PBF SSOP 24 E $4.22 $2.95 View
LT4180EGN#TRPBF SSOP 24 E $3.01 View
LT4180IGN#PBF SSOP 24 I $4.87 $3.41 View
LT4180IGN#TRPBF SSOP 24 I $3.47 View
LT4180MPGN#PBF SSOP 24 MP $11.26 $7.88 View
LT4180MPGN#TRPBF SSOP 24 MP $7.94 View
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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 Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC1504A LT4180EGN Demo Board u VIN= 8V to 36V, VOUT1 = 5V @ 3A $125.00
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Click here to view our complete list of demo boards

Applications

  • 12V High Intensity Lamps
  • 28V Industrial Systems
  • High Power (>40 Watts) CAT5 Cable Systems
  • Wiring Drop Cancellation for Notebook Computer Battery Charging
  • AC and DC Adaptors
  • Well-Logging and Other Remote Instrumentation
  • Surveillance Equipment

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Design Tools

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LT4180

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