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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

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Ecosystems

    • Part Number

      BATT-MON Click is a very versatile, high accuracy, multiple-chemistry battery gauge for applications single-cell batteries.

Embedded Software

    • Part Number

      STC3115 Open source driver

Evaluation Tools

    • Part Number

      Battery monitoring with alarm output for gas gauge applications based on the STC3115

      Wearable sensor unit reference design for fast time to market

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS9300
      Gas gauge IC with alarm output for handheld applications
      9.0
      713.02 KB
      PDF
      DS9300

      Gas gauge IC with alarm output for handheld applications

    • Description Version Size Action
      AN4324
      STC3115 system integration
      2.0
      847.32 KB
      PDF
      AN4324

      STC3115 system integration

    • Description Version Size Action
      UM1836
      STSW-BAT001 open source driver for the STC3115
      1.0
      153.87 KB
      PDF
      UM1836

      STSW-BAT001 open source driver for the STC3115

Presentations & Training Material

    • Description Version Size Action
      Health and Wellness Mobility Cloud computing
      1.32 MB
      PDF

      Health and Wellness Mobility Cloud computing

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STC3115AIJT
Active
Chip Scale Package 0.4mm pitch Industrial Ecopack3
STC3115AIQT
Active
UFDFPN 2X3 10L Industrial Ecopack3
STC3115IJT
Active
Chip Scale Package 0.4mm pitch Industrial Ecopack3
STC3115IQT
Active
UFDFPN 2X3 10L Industrial Ecopack3

STC3115AIJT

Package:

Chip Scale Package 0.4mm pitch

Material Declaration**:

PDF XML

Marketing Status

Active

Package

Chip Scale Package 0.4mm pitch

Grade

Industrial

RoHS Compliance Grade

Ecopack3

STC3115AIQT

Package:

UFDFPN 2X3 10L

Material Declaration**:

PDF XML

Marketing Status

Active

Package

UFDFPN 2X3 10L

Grade

Industrial

RoHS Compliance Grade

Ecopack3

STC3115IJT

Package:

Chip Scale Package 0.4mm pitch

Material Declaration**:

PDF XML

Marketing Status

Active

Package

Chip Scale Package 0.4mm pitch

Grade

Industrial

RoHS Compliance Grade

Ecopack3

STC3115IQT

Package:

UFDFPN 2X3 10L

Material Declaration**:

Marketing Status

Active

Package

UFDFPN 2X3 10L

Grade

Industrial

RoHS Compliance Grade

Ecopack3

(**) 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.

Sample & Buy

Part Number
Order from Distributors
Order from ST
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Country of Origin
Budgetary Price (US$)*/Qty
min
max
STC3115AIQT Available at 6 distributors

Distributor availability ofSTC3115AIQT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 9413 1 Order Now
RS COMPONENTS EUROPE 1600 1 Order Now
FUTURE WORLDWIDE 6000 3000 Order Now
ARROW AMERICA 2298 1 Order Now
MOUSER WORLDWIDE 3224 1 Order Now
Farnell Element14 EUROPE 2942 1 Order Now

Distributor reported inventory date: 2020-08-10

Distributor Name

DIGIKEY

Stock

9413

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1600

Min.Order

1

Region

EUROPE Order Now

FUTURE

Stock

6000

Min.Order

3000

Region

WORLDWIDE Order Now

ARROW

Stock

2298

Min.Order

1

Region

AMERICA Order Now

MOUSER

Stock

3224

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2942

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-10

Buy now
Active
EAR99 NEC Tape And Reel UFDFPN 2X3 10L -40 85 PHILIPPINES 1.26 / 1k
STC3115AIJT Available at 6 distributors

Distributor availability ofSTC3115AIJT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4885 1 Order Now
RS COMPONENTS EUROPE 2245 1 Order Now
ARROW AMERICA 71664 1 Order Now
Farnell Element14 EUROPE 413 1 Order Now
ANGLIA Live EUROPE 100 5000 Order Now
RUTRONIK EUROPE 5000 5000 Order Now

Distributor reported inventory date: 2020-08-10

Distributor Name

DIGIKEY

Stock

4885

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2245

Min.Order

1

Region

EUROPE Order Now

ARROW

Stock

71664

Min.Order

1

Region

AMERICA Order Now

Farnell Element14

Stock

413

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

100

Min.Order

5000

Region

EUROPE Order Now

RUTRONIK

Stock

5000

Min.Order

5000

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-10

Active
EAR99 NEC Tape And Reel Chip Scale Package 0.4mm pitch -40 85 FRANCE 1.176 / 1k
STC3115IJT Available at 4 distributors

Distributor availability ofSTC3115IJT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 324 1 Order Now
ARROW EUROPE 5000 0 Order Now
Newark Element14 AMERICA 1950 0 Order Now
Farnell Element14 EUROPE 2443 1 Order Now

Distributor reported inventory date: 2020-08-10

Distributor Name

DIGIKEY

Stock

324

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

5000

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

1950

Min.Order

0

Region

AMERICA Order Now

Farnell Element14

Stock

2443

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-10

Buy now
Active
EAR99 NEC Tape And Reel Chip Scale Package 0.4mm pitch -40 85 CHINA
STC3115IQT Available at 5 distributors

Distributor availability ofSTC3115IQT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3000 1 Order Now
AVNET AMERICA 3000 0 Order Now
Newark Element14 AMERICA 1098 0 Order Now
MOUSER WORLDWIDE 2400 1 Order Now
Farnell Element14 EUROPE 620 1 Order Now

Distributor reported inventory date: 2020-08-10

Distributor Name

DIGIKEY

Stock

3000

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

3000

Min.Order

0

Region

AMERICA Order Now

Newark Element14

Stock

1098

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

2400

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

620

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-10

Buy now
Active
EAR99 NEC Tape And Reel UFDFPN 2X3 10L -40 85 PHILIPPINES 1.26 / 1k

STC3115AIQT

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

1.26 / 1k

Distributor availability ofSTC3115AIQT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 9413 1 Order Now
RS COMPONENTS EUROPE 1600 1 Order Now
FUTURE WORLDWIDE 6000 3000 Order Now
ARROW AMERICA 2298 1 Order Now
MOUSER WORLDWIDE 3224 1 Order Now
Farnell Element14 EUROPE 2942 1 Order Now

Distributor reported inventory date: 2020-08-10

Distributor Name

DIGIKEY

Stock

9413

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1600

Min.Order

1

Region

EUROPE Order Now

FUTURE

Stock

6000

Min.Order

3000

Region

WORLDWIDE Order Now

ARROW

Stock

2298

Min.Order

1

Region

AMERICA Order Now

MOUSER

Stock

3224

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2942

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-10

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

UFDFPN 2X3 10L

Operating Temperature (°C)

(min)

-40

(max)

85

Budgetary Price (US$)* / Qty

1.26 / 1k

Country of Origin

PHILIPPINES

STC3115AIJT

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

1.176 / 1k

Distributor availability ofSTC3115AIJT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4885 1 Order Now
RS COMPONENTS EUROPE 2245 1 Order Now
ARROW AMERICA 71664 1 Order Now
Farnell Element14 EUROPE 413 1 Order Now
ANGLIA Live EUROPE 100 5000 Order Now
RUTRONIK EUROPE 5000 5000 Order Now

Distributor reported inventory date: 2020-08-10

Distributor Name

DIGIKEY

Stock

4885

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2245

Min.Order

1

Region

EUROPE Order Now

ARROW

Stock

71664

Min.Order

1

Region

AMERICA Order Now

Farnell Element14

Stock

413

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

100

Min.Order

5000

Region

EUROPE Order Now

RUTRONIK

Stock

5000

Min.Order

5000

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-10

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

Chip Scale Package 0.4mm pitch

Operating Temperature (°C)

(min)

-40

(max)

85

Budgetary Price (US$)* / Qty

1.176 / 1k

Country of Origin

FRANCE

STC3115IJT

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

Distributor availability ofSTC3115IJT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 324 1 Order Now
ARROW EUROPE 5000 0 Order Now
Newark Element14 AMERICA 1950 0 Order Now
Farnell Element14 EUROPE 2443 1 Order Now

Distributor reported inventory date: 2020-08-10

Distributor Name

DIGIKEY

Stock

324

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

5000

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

1950

Min.Order

0

Region

AMERICA Order Now

Farnell Element14

Stock

2443

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-10

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

Chip Scale Package 0.4mm pitch

Operating Temperature (°C)

(min)

-40

(max)

85

Budgetary Price (US$)* / Qty

Country of Origin

CHINA

STC3115IQT

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

1.26 / 1k

Distributor availability ofSTC3115IQT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3000 1 Order Now
AVNET AMERICA 3000 0 Order Now
Newark Element14 AMERICA 1098 0 Order Now
MOUSER WORLDWIDE 2400 1 Order Now
Farnell Element14 EUROPE 620 1 Order Now

Distributor reported inventory date: 2020-08-10

Distributor Name

DIGIKEY

Stock

3000

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

3000

Min.Order

0

Region

AMERICA Order Now

Newark Element14

Stock

1098

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

2400

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

620

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-10

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

UFDFPN 2X3 10L

Operating Temperature (°C)

(min)

-40

(max)

85

Budgetary Price (US$)* / Qty

1.26 / 1k

Country of Origin

PHILIPPINES

(*) 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