STC3115   Product is in volume production.

Gas gauge IC with alarm output for handheld applications

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The STC3115 includes the hardware functions required to implement a low-cost gas gauge for battery monitoring. The STC3115 uses current sensing, Coulomb counting and accurate measurements of the battery voltage to estimate the state-of-charge (SOC) of the battery. An internal temperature sensor simplifies implementation of temperature compensation.

An alarm output signals a low SOC condition and can also indicate low battery voltage. The alarm threshold levels are programmable.

The STC3115 offers advanced features to ensure high performance gas gauging in all application conditions.

Key Features

  • OptimGauge™ algorithm
  • 0.25% accuracy battery voltage monitoring
  • Coulomb counter and voltage-mode gas gauge operations
  • Robust initial open-circuit-voltage (OCV) measurement at power-up
  • Programmable low battery alarm
  • Internal temperature sensor
  • Battery swap detection
  • Low power: 45 μA in power-saving mode, 2 μA max. in standby mode
  • Micro-sized packages:
    • 1.4 x 2.0 mm 10-bump CSP package
    • 2.0 x 3.0 mm DFN10 package

Resources

Technical Documentation

Product Specifications
Description Version Size
DS9300 DS9300: Gas gauge IC with alarm output for handheld applications 9.0 713 KB
Application Notes
Description Version Size
AN4324 AN4324: STC3115 system integration 2.0 847 KB
User Manuals
Description Version Size
UM1836 UM1836: STSW-BAT001 open source driver for the STC3115 1.0 153 KB

Presentations & Training Material

Presentations
Description Version Size
Health and Wellness Mobility Cloud computing 1 MB

Publications and Collaterals

Brochures
Description Version Size
Brochure Power management guide 10.2018 4 MB

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Sample & Buy

Part Number Package Packing Type Operating Temperature (°C) (min) Operating Temperature (°C) (max) Marketing Status Unit Price (US$) * Quantity ECCN (US) Country of Origin More info Order from ST Order from Distributors
STC3115AIQT UFDFPN 2X3 10L Tape And Reel -40 85 Active - EAR99 - MORE INFO Buy Direct Add to cart DISTRIBUTOR AVAILABILITY
STC3115AIJT Chip Scale Package 0.4mm pitch Tape And Reel -40 85 Active - EAR99 CHINA MORE INFO Buy Direct Add to cart DISTRIBUTOR AVAILABILITY
STC3115IJT Chip Scale Package 0.4mm pitch Tape And Reel -40 85 Active - EAR99 CHINA MORE INFO Buy Direct Add to cart DISTRIBUTOR AVAILABILITY
STC3115IQT UFDFPN 2X3 10L Tape And Reel -40 85 Active - EAR99 PHILIPPINES MORE INFO Buy Direct Add to cart DISTRIBUTOR AVAILABILITY
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(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

Quality & Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STC3115AIQT ActiveUFDFPN 2X3 10LIndustrialEcopack3 0 0
STC3115AIJT ActiveChip Scale Package 0.4mm pitchIndustrialEcopack3
STC3115IJT ActiveChip Scale Package 0.4mm pitchIndustrialEcopack3 0 0
STC3115IQT ActiveUFDFPN 2X3 10LIndustrialEcopack3
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(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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