LTC1728
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LTC1728

Micropower Precision Triple Supply Monitors in 8-Lead MSOP and 5-Lead SOT-23 Packages

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 10
1ku List Price Starting From $2.06
Features
  • Monitors Three Inputs Simultaneously
    • LTC1727-5: 5V, 3.3V and ADJ
    • LTC1727-2.5: 2.5V, 3.3V and ADJ
    • LTC1728-5: 5V, 3.3V and ADJ
    • LTC1728-2.5: 2.5V, 3.3V and ADJ
    • LTC1728-1.8: 3V, 1.8V and ADJ
    • LTC1728-3.3: 3.3V, 1.8V and ADJ
  • ±1.5% Threshold Accuracy Over Temperature
  • Very Low Supply Current: 10µA Typ
  • 200ms Reset Time Delay
  • Active Low RESET Output
  • Power Supply Glitch Immunity
  • Guaranteed RESET for VCC3 ≥ 1V or VCC5/VCC25/VCC18 ≥ 1V
  • LTC1727 Includes Monitor Output for Each Supply
  • LTC1727: 8-Lead MSOP and SO Packages
  • LTC1728: 5-Lead SOT-23 Package
Additional Details
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The LTC1727 is a triple supply monitor intended for systems with multiple supply voltages. Each supply monitor has its own open-drain output for individual supply monitoring. A common open-drain reset output remains low until all three supplies have been in compliance for 200ms. Tight 1.5% accuracy specifications and glitch immunity ensure reliable reset operation without false triggering.

The LTC1728 is functionally identical to the LTC1727 without the individual monitor outputs.

The RST output is guaranteed to be in the correct state for VCC5/VCC25/VCC18 or VCC3 down to 1V. The LTC1727/LTC1728 may also be configured to monitor any one or two VCC inputs instead of three, depending on system requirements.

Very low (10µA typical) supply current makes the LTC1727/LTC1728 ideal for power conscious systems.

The LTC1727 is available in an 8-lead MSOP or SO package and the LTC1728 is available in a 5-lead SOT-23 package.

Applications

  • Desktop Computers
  • Notebook Computers
  • Intelligent Instruments
  • Portable Battery-Powered Equipment
  • Network Servers
Part Models 10
1ku List Price Starting From $2.06

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC1728ES5-1.8#TRMPBF
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LTC1728ES5-1.8#TRPBF
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LTC1728ES5-2.5#TRMPBF
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LTC1728ES5-2.5#TRPBF
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LTC1728ES5-3.3#TRMPBF
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LTC1728ES5-3.3#TRPBF
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LTC1728ES5-5#TRMPBF
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LTC1728ES5-5#TRPBF
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LTC1728HS5-5#TRMPBF
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LTC1728HS5-5#TRPBF
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Software & Part Ecosystem

Software & Part Ecosystem

Tools & Simulations

Tools & Simulations 1

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.

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