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LTC1985-1.8 Datasheet

LTC1985-1.8 Datasheet

Micropower Precision Triple Supply Monitor with Push-Pull Reset Output in a 5-Lead SOT-23 Package
Part No.: LTC1985-1.8
Page: 8 Pages
Size: 131 KB
Manufacturer: Linear Technology
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Update Time: 2024-12-21 11:50:30
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LTC1985-1.8 Datasheet Applicable Part

Part No. Packing SPQ Marking MSL Pins Temp Range Package Description Buy
LTC1985ES5-1.8#TRPBF Reel 2500 LTNM 1 5 -40°C ~ 85°C 5-Lead TSOT-23  
LTC1985ES5-1.8#TRMPBF Reel 500 LTNM 1 5 -40°C ~ 85°C 5-Lead TSOT-23  
SPQ:Standard Pack Quantity;MSL:Moisture Sensitivity Level

LTC1985-1.8 Datasheet(PDF)

LTC1985-1.8 Datasheet(Picture)

LTC1985-1.8 Features

  • Monitors Three Inputs Simultaneously:
    • 3V, 1.8V and Adjustable
  • ±1.5% Threshold Accuracy Over Temperature
  • Very Low Supply Current: 10µA Typ
  • 200ms Reset Time Delay
  • Power Supply Glitch Immunity
  • Guaranteed RESET for VCC3 ≥ 1V or VCC18 ≥ 1V
  • 3V Active-Low Push-Pull Reset Output
  • 5-Lead SOT-23 Package

LTC1985-1.8 Applications

  • Desktop Computers
  • Notebook Computers
  • Intelligent Instruments
  • Portable Battery-Powered Equipment
  • Network Servers

LTC1985-1.8 Description

The LTC1985-1.8 is a triple supply monitor intended for systems with multiple supply voltages. The 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 RST output is guaranteed to be in the correct state for VCC18 or VCC3 down to 1V. The LTC1985 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 LTC1985 ideal for power conscious systems.

The LTC1985-1.8 is available in a 5-lead SOT-23 package.

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