1. Products
  2. Power Monitor, Control, and Protection
  3. Supervisory Circuits
  4. Single-Supply Monitors
  5. LTC2935

Data Sheet
User Guides Rev. B
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Overview

Features and Benefits

  • 500nA Quiescent Current
  • ±1.5% (Max) Accuracy over Temperature
  • Integrated Precision Attenuators
  • Eight Pin-Selectable Reset Thresholds
  • Eight Pin-Selectable Power-Fail Thresholds
  • Early Warning Power-Fail Output
  • 200ms Reset Timeout
  • Manual Reset Input
  • Compact 8-Lead, 2mm × 2mm DFN and TSOT-23 (ThinSOT™) Packages

Product Details

The LTC2935 ultra-low power voltage monitor provides system initialization, power-fail warning and reset generation functions. Low quiescent current (500nA typical) makes the LTC2935 an ideal choice for battery-operated applications.

Three binary threshold-select inputs configure one of eight integrated reset thresholds, ranging from 1.6V to 3.45V in pre-determined increments. Early warning of an impending low voltage condition is provided at the powerfail output (PFO), whose threshold is above the configured reset threshold. Supervisory circuits monitor VCC and pull RST low when VCC drops below the configured reset threshold. When VCC is rising from an under-threshold condition, an internal reset timer is started after exceeding the reset threshold by 5%. A 200ms reset timeout delays the return of the RST output to a high state. A pushbutton switch connected to the MR input is typically used to force a manual reset. Outputs RST and PFO are available with open-drain (LTC2935-1/LTC2935-3) or active pull-up (LTC2935-2/LTC2935-4) circuits. Operating temperature range is from –40°C to 85°C.

Applications

  • Portable Equipment
  • Battery-Powered Equipment
  • Security Systems
  • Point-of-Sale Devices
  • Wireless Systems

Product Categories

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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.

Evaluation Kits (3)

Documentation & Resources

  • View All (8)
  • Data Sheets (1)
  • Reliability Data (1)
  • User Guides (3)
  • Product Selector Card (2)
  • Technical Articles (1)
    • Document Type

    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:

    LTC2935-1
    LTC2935-2
    LTC2935-3
    LTC2935-4

    Product Recommendations

    LTC2935 Companion Parts

    Recommended Related Parts

    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.View our quality and reliability program and certifications for more information.

    Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
    LTC2935CDC-1#TRMPBF Material Declaration Reliability Data 8-Lead DFN (2mm x 2mm w/ EP)
    LTC2935CDC-1#TRPBF Material Declaration Reliability Data 8-Lead DFN (2mm x 2mm w/ EP)
    LTC2935CDC-2#TRMPBF Material Declaration Reliability Data 8-Lead DFN (2mm x 2mm w/ EP)
    LTC2935CDC-2#TRPBF Material Declaration Reliability Data 8-Lead DFN (2mm x 2mm w/ EP)
    LTC2935CDC-3#TRMPBF Material Declaration Reliability Data 8-Lead DFN (2mm x 2mm w/ EP)
    LTC2935CDC-3#TRPBF Material Declaration Reliability Data 8-Lead DFN (2mm x 2mm w/ EP)
    LTC2935CDC-4#TRMPBF Material Declaration Reliability Data 8-Lead DFN (2mm x 2mm w/ EP)
    LTC2935CDC-4#TRPBF Material Declaration Reliability Data 8-Lead DFN (2mm x 2mm w/ EP)
    LTC2935CTS8-1#TRMPBF Material Declaration Reliability Data 8-Lead SOT-23
    LTC2935CTS8-1#TRPBF Material Declaration Reliability Data 8-Lead SOT-23
    LTC2935CTS8-2#TRMPBF Material Declaration Reliability Data 8-Lead SOT-23
    LTC2935CTS8-2#TRPBF Material Declaration Reliability Data 8-Lead SOT-23
    LTC2935CTS8-3#TRMPBF Material Declaration Reliability Data 8-Lead SOT-23
    LTC2935CTS8-3#TRPBF Material Declaration Reliability Data 8-Lead SOT-23
    LTC2935CTS8-4#TRMPBF Material Declaration Reliability Data 8-Lead SOT-23
    LTC2935CTS8-4#TRPBF Material Declaration Reliability Data 8-Lead SOT-23
    LTC2935IDC-1#TRMPBF Material Declaration Reliability Data 8-Lead DFN (2mm x 2mm w/ EP)
    LTC2935IDC-1#TRPBF Material Declaration Reliability Data 8-Lead DFN (2mm x 2mm w/ EP)
    LTC2935IDC-2#TRMPBF Material Declaration Reliability Data 8-Lead DFN (2mm x 2mm w/ EP)
    LTC2935IDC-2#TRPBF Material Declaration Reliability Data 8-Lead DFN (2mm x 2mm w/ EP)
    LTC2935IDC-3#TRMPBF Material Declaration Reliability Data 8-Lead DFN (2mm x 2mm w/ EP)
    LTC2935IDC-3#TRPBF Material Declaration Reliability Data 8-Lead DFN (2mm x 2mm w/ EP)
    LTC2935IDC-4#TRMPBF Material Declaration Reliability Data 8-Lead DFN (2mm x 2mm w/ EP)
    LTC2935IDC-4#TRPBF Material Declaration Reliability Data 8-Lead DFN (2mm x 2mm w/ EP)
    LTC2935ITS8-1#TRMPBF Material Declaration Reliability Data 8-Lead SOT-23
    LTC2935ITS8-1#TRPBF Material Declaration Reliability Data 8-Lead SOT-23
    LTC2935ITS8-2#TRMPBF Material Declaration Reliability Data 8-Lead SOT-23
    LTC2935ITS8-2#TRPBF Material Declaration Reliability Data 8-Lead SOT-23
    LTC2935ITS8-3#TRMPBF Material Declaration Reliability Data 8-Lead SOT-23
    LTC2935ITS8-3#TRPBF Material Declaration Reliability Data 8-Lead SOT-23
    LTC2935ITS8-4#TRMPBF Material Declaration Reliability Data 8-Lead SOT-23
    LTC2935ITS8-4#TRPBF Material Declaration Reliability Data 8-Lead SOT-23
    Wafer Fabrication Data R544 Reliability Data

    Support & Discussions

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