1. Products
  2. Power Monitor, Control, and Protection
  3. Pushbutton Controllers
  4. LTC2956

Data Sheet
JP
User Guides
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Overview

Features and Benefits

  • 1.5V to 36V Supply Input Range
  • Adjustable Wake-Up Period: 250ms to 39 Days
  • Adjustable Maximum Awake Time
  • 0.8μA Quiescent Current
  • 0.3μA Shutdown Current
  • Pushbutton Input with Debouncing
  • Low Leakage EN Output Allows DC/DC Converter Control (LTC2956-1)
  • High Voltage EN Output Drives External P-Channel MOSFET (LTC2956-2)
  • ±25kV ESD HBM on PB Input
  • 12-Lead 3mm × 3mm QFN and MSOP Packages

Product Details

The LTC2956 is a micropower, wide input voltage range, configurable wake-up timer with pushbutton control. It periodically wakes up and turns on a connected system to perform tasks like monitoring temperature or capturing images. After completing the task, the LTC2956 turns the system off to conserve power.

The wake-up timer period can be adjusted from 250ms to 39 days using configuration resistors. The system awake time can be controlled by the input pulse at the SLEEP pin or adjusted by the capacitor at the ONMAX pin. The LTC2956 operates over a wide supply input range from 1.5V to 36V. The low 800nA quiescent current suits battery powered applications.

The pushbutton input allows the user to shutdown, turn on or reset the wake-up timer. With the timer in shutdown, the quiescent current drops to 300nA. The LTC2956 also provides three status outputs to indicate mode transitions and pushbutton events. Two versions are available for applications requiring either positive or negative enable polarities.

Applications

  • Heartbeat Timers
  • Periodic Wake-Up Control
  • Portable and Battery-Powered Equipment
  • Intervalometers
  • Data Acquisition

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Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Evaluation Kits (2)

Documentation & Resources

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  • Data Sheets (1)
  • Reliability Data (1)
  • User Guides (1)
  • Product Selector Card (3)
  • Videos (1)
  • Press Releases (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:

    LTC2956-1
    LTC2956-2

    Product Recommendations

    LTC2956 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
    LTC2956CMS-1#PBF Material Declaration Reliability Data 12-Lead MSOP
    LTC2956CMS-1#TRPBF Material Declaration Reliability Data 12-Lead MSOP
    LTC2956CMS-2#PBF Material Declaration Reliability Data 12-Lead MSOP
    LTC2956CMS-2#TRPBF Material Declaration Reliability Data 12-Lead MSOP
    LTC2956CUD-1#PBF Material Declaration Reliability Data 12-Lead QFN (3mm x 3mm x 0.75mm w/ EP)
    LTC2956CUD-1#TRPBF Material Declaration Reliability Data 12-Lead QFN (3mm x 3mm x 0.75mm w/ EP)
    LTC2956CUD-2#PBF Material Declaration Reliability Data 12-Lead QFN (3mm x 3mm x 0.75mm w/ EP)
    LTC2956CUD-2#TRPBF Material Declaration Reliability Data 12-Lead QFN (3mm x 3mm x 0.75mm w/ EP)
    LTC2956IMS-1#PBF Material Declaration Reliability Data 12-Lead MSOP
    LTC2956IMS-1#TRPBF Material Declaration Reliability Data 12-Lead MSOP
    LTC2956IMS-2#PBF Material Declaration Reliability Data 12-Lead MSOP
    LTC2956IMS-2#TRPBF Material Declaration Reliability Data 12-Lead MSOP
    LTC2956IUD-1#PBF Material Declaration Reliability Data 12-Lead QFN (3mm x 3mm x 0.75mm w/ EP)
    LTC2956IUD-1#TRPBF Material Declaration Reliability Data 12-Lead QFN (3mm x 3mm x 0.75mm w/ EP)
    LTC2956IUD-2#PBF Material Declaration Reliability Data 12-Lead QFN (3mm x 3mm x 0.75mm w/ EP)
    LTC2956IUD-2#TRPBF Material Declaration Reliability Data 12-Lead QFN (3mm x 3mm x 0.75mm w/ EP)
    Wafer Fabrication Data R554 Reliability Data

    PCN-PDN Information

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    Select Model for PCN Information
    • LTC2956CMS-1#PBF Production
    • LTC2956CMS-1#TRPBF Production
    • LTC2956CMS-2#PBF Production
    • LTC2956CMS-2#TRPBF Production
    • LTC2956IMS-1#PBF Production
    • LTC2956IMS-1#TRPBF Production
    • LTC2956IMS-2#PBF Production
    • LTC2956IMS-2#TRPBF Production

    Support & Discussions

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