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LTC1728 Datasheet

LTC1728 Datasheet

Micropower Precision Triple Supply Monitors in 5-Lead SOT-23 Packages
Part No.: LTC1728
Page: 18 Pages
Size: 314 KB
Manufacturer: Linear Technology
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Views: 1
Update Time: 2023-11-09 14:24:14
DataSheet: Download

LTC1728 Datasheet Applicable Part

Part No. Packaging SPQ Marking MSL Pins Temp Range Package Description Buy
LTC1728ES5-1.8#PBF Tube   LTPH 1 5 -40°C ~ 85°C 5-Lead TSOT-23  
LTC1728ES5-1.8#TRPBF Reel 2500 LTPH 1 5 -40°C ~ 85°C 5-Lead TSOT-23  
LTC1728ES5-1.8#TRMPBF Reel 500 LTPH 1 5 -40°C ~ 85°C 5-Lead TSOT-23  
LTC1728ES5-2.5#PBF Tube   LTIA 1 5 -40°C ~ 85°C 5-Lead TSOT-23  
LTC1728ES5-2.5#TRPBF Reel 2500 LTIA 1 5 -40°C ~ 85°C 5-Lead TSOT-23  
LTC1728ES5-2.5#TRMPBF Reel 500 LTIA 1 5 -40°C ~ 85°C 5-Lead TSOT-23  
LTC1728ES5-3.3#PBF Tube   LTYP 1 5 -40°C ~ 85°C 5-Lead TSOT-23  
LTC1728ES5-3.3#TRPBF Reel 2500 LTYP 1 5 -40°C ~ 85°C 5-Lead TSOT-23  
LTC1728ES5-3.3#TRMPBF Reel 500 LTYP 1 5 -40°C ~ 85°C 5-Lead TSOT-23  
LTC1728ES5-5#PBF Tube   LTHZ 1 5 -40°C ~ 85°C 5-Lead TSOT-23  
LTC1728ES5-5#TRPBF Reel 2500 LTHZ 1 5 -40°C ~ 85°C 5-Lead TSOT-23  
LTC1728ES5-5#TRMPBF Reel 500 LTHZ 1 5 -40°C ~ 85°C 5-Lead TSOT-23  
LTC1728HS5-5#PBF Tube   LTHZ 1 5 -40°C ~ 125°C 5-Lead TSOT-23  
LTC1728HS5-5#TRPBF Reel 2500 LTHZ 1 5 -40°C ~ 125°C 5-Lead TSOT-23  
LTC1728HS5-5#TRMPBF Reel 500 LTHZ 1 5 -40°C ~ 125°C 5-Lead TSOT-23  
SPQ:Standard Pack Quantity;MSL:Moisture Sensitivity Level

LTC1728 Datasheet(PDF)

LTC1728 Datasheet(Picture)

LTC1728 Features

  • Monitors Three Inputs Simultaneously
    • 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
  • LTC1728: 5-Lead SOT-23 Package

LTC1728 Applications

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

LTC1728 Description

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 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 LTC1728 ideal for power conscious systems.

The LTC1728 is available in a 5-lead SOT-23 package.

LTC1728 Related Parts

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