Overview

Features and Benefits

  • Fully Enhances N-Channel Power MOSFETs
  • 8µA IQ Standby Current
  • 85µA IQ ON Current
  • No External Charge Pump Capacitors
  • 4.5V to 18V Supply Range
  • Short-Circuit Protection
  • Thermal Shutdown via PTC Thermistor
  • Status Output Indicates Shutdown
  • Available in 8-Pin SOIC

Product Details

The LTC1154 single high-side gate driver allows using low cost N-channel FETs for high-side switching applications. An internal charge pump boosts the gate drive voltage above the positive rail, fully enhancing an N-channel MOS switch with no external components. Micropower operation, with 8µA standby current and 85µA operating current, allows use in virtually all systems with maximum efficiency.

Included on chip is programmable over-current sensing. A time delay can be added to prevent false triggering on high in-rush current loads. An active high shutdown input is also provided and interfaces directly to a standard PTC thermistor for thermal shutdown. An open-drain output is provided to report switch status to the µP. An active low enable input is provided to control multiple switches in banks.

The LTC1154 is available in both 8-pin DIP and 8-pin SOIC packages.

Applications

  • Laptop Computer Power Switching
  • SCSI Termination Power Switching
  • Cellular Telephone Power Management
  • Battery Charging and Management
  • High-Side Industrial and Automotive Switching
  • Stepper Motor and DC Motor Control

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

LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

LTspice

Models for the following parts are available in LTspice:

LTC1154

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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