STC3115

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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

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Embedded Software

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      STC3115 Open source driver

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

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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
Package
Packing Type
Temperature (°C) Marketing Status
ECCN (US)
Country of Origin
Budgetary Price (US$)*/Qty
min
max
STC3115AIQT Available at 8 distributors

Distributor availability ofSTC3115AIQT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5457 1 Order Now
RS COMPONENTS EUROPE 1660 1 Order Now
AVNET AMERICA 9000 0 Order Now
FUTURE WORLDWIDE 3000 3000 Order Now
Newark Element14 AMERICA 878 0 Order Now
ARROW AMERICA 2298 1 Order Now
MOUSER WORLDWIDE 349 1 Order Now
Farnell Element14 EUROPE 498 1 Order Now

Distributor reported inventory date: 2020-07-10

Distributor Name

DIGIKEY

Stock

5457

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1660

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

9000

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

3000

Min.Order

3000

Region

WORLDWIDE Order Now

Newark Element14

Stock

878

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

2298

Min.Order

1

Region

AMERICA Order Now

MOUSER

Stock

349

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

498

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-10

Buy now UFDFPN 2X3 10L Tape And Reel -40 85
Active
EAR99 PHILIPPINES 1.26 / 1k
STC3115AIJT Available at 7 distributors

Distributor availability ofSTC3115AIJT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4300 1 Order Now
RS COMPONENTS EUROPE 2395 1 Order Now
ARROW EUROPE 5000 0 Order Now
ARROW AMERICA 71664 1 Order Now
MOUSER WORLDWIDE 3073 1 Order Now
Farnell Element14 EUROPE 438 1 Order Now
ANGLIA Live EUROPE 100 5000 Order Now

Distributor reported inventory date: 2020-07-10

Distributor Name

DIGIKEY

Stock

4300

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2395

Min.Order

1

Region

EUROPE Order Now

ARROW

Stock

5000

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

71664

Min.Order

1

Region

AMERICA Order Now

MOUSER

Stock

3073

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

438

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

100

Min.Order

5000

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-10

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

Distributor availability ofSTC3115IJT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 300 1 Order Now
ARROW EUROPE 5000 0 Order Now
Newark Element14 AMERICA 1950 0 Order Now
Farnell Element14 EUROPE 2448 1 Order Now

Distributor reported inventory date: 2020-07-10

Distributor Name

DIGIKEY

Stock

300

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

2448

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-10

Buy now Chip Scale Package 0.4mm pitch Tape And Reel -40 85
Active
EAR99 CHINA
STC3115IQT Available at 3 distributors

Distributor availability ofSTC3115IQT

Distributor Name
Region Stock Min. Order Third party link
AVNET AMERICA 3000 0 Order Now
Newark Element14 AMERICA 1098 0 Order Now
Farnell Element14 EUROPE 970 1 Order Now

Distributor reported inventory date: 2020-07-10

Distributor Name

AVNET

Stock

3000

Min.Order

0

Region

AMERICA Order Now

Newark Element14

Stock

1098

Min.Order

0

Region

AMERICA Order Now

Farnell Element14

Stock

970

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-10

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

STC3115AIQT

Package

UFDFPN 2X3 10L

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

1.26 / 1k

Distributor availability ofSTC3115AIQT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5457 1 Order Now
RS COMPONENTS EUROPE 1660 1 Order Now
AVNET AMERICA 9000 0 Order Now
FUTURE WORLDWIDE 3000 3000 Order Now
Newark Element14 AMERICA 878 0 Order Now
ARROW AMERICA 2298 1 Order Now
MOUSER WORLDWIDE 349 1 Order Now
Farnell Element14 EUROPE 498 1 Order Now

Distributor reported inventory date: 2020-07-10

Distributor Name

DIGIKEY

Stock

5457

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1660

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

9000

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

3000

Min.Order

3000

Region

WORLDWIDE Order Now

Newark Element14

Stock

878

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

2298

Min.Order

1

Region

AMERICA Order Now

MOUSER

Stock

349

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

498

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-10

Operating Temperature (°C)

(min)

-40

(max)

85

Marketing Status

Active

Budgetary Price (US$)* / Qty

1.26 / 1k

ECCN (US)

EAR99

Country of Origin

PHILIPPINES

STC3115AIJT

Package

Chip Scale Package 0.4mm pitch

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

1.176 / 1k

Distributor availability ofSTC3115AIJT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4300 1 Order Now
RS COMPONENTS EUROPE 2395 1 Order Now
ARROW EUROPE 5000 0 Order Now
ARROW AMERICA 71664 1 Order Now
MOUSER WORLDWIDE 3073 1 Order Now
Farnell Element14 EUROPE 438 1 Order Now
ANGLIA Live EUROPE 100 5000 Order Now

Distributor reported inventory date: 2020-07-10

Distributor Name

DIGIKEY

Stock

4300

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2395

Min.Order

1

Region

EUROPE Order Now

ARROW

Stock

5000

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

71664

Min.Order

1

Region

AMERICA Order Now

MOUSER

Stock

3073

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

438

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

100

Min.Order

5000

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-10

Operating Temperature (°C)

(min)

-40

(max)

85

Marketing Status

Active

Budgetary Price (US$)* / Qty

1.176 / 1k

ECCN (US)

EAR99

Country of Origin

FRANCE

STC3115IJT

Package

Chip Scale Package 0.4mm pitch

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

Distributor availability ofSTC3115IJT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 300 1 Order Now
ARROW EUROPE 5000 0 Order Now
Newark Element14 AMERICA 1950 0 Order Now
Farnell Element14 EUROPE 2448 1 Order Now

Distributor reported inventory date: 2020-07-10

Distributor Name

DIGIKEY

Stock

300

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

2448

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-10

Operating Temperature (°C)

(min)

-40

(max)

85

Marketing Status

Active

Budgetary Price (US$)* / Qty

ECCN (US)

EAR99

Country of Origin

CHINA

STC3115IQT

Package

UFDFPN 2X3 10L

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

1.26 / 1k

Distributor availability ofSTC3115IQT

Distributor Name
Region Stock Min. Order Third party link
AVNET AMERICA 3000 0 Order Now
Newark Element14 AMERICA 1098 0 Order Now
Farnell Element14 EUROPE 970 1 Order Now

Distributor reported inventory date: 2020-07-10

Distributor Name

AVNET

Stock

3000

Min.Order

0

Region

AMERICA Order Now

Newark Element14

Stock

1098

Min.Order

0

Region

AMERICA Order Now

Farnell Element14

Stock

970

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-10

Operating Temperature (°C)

(min)

-40

(max)

85

Marketing Status

Active

Budgetary Price (US$)* / Qty

1.26 / 1k

ECCN (US)

EAR99

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