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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Part Number
Package
Packing Type
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Budgetary Price (US$)*
Quantity
ECCN (US)
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STC3115AIQT UFDFPN 2X3 10L Tape And Reel -40 85
Active
- EAR99
MORE INFO

Country of Origin:

-

Check Availability

Distributor availability ofSTC3115AIQT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 7774 1 Order Now
Newark Element14 AMERICA 1119 0 Order Now
ARROW AMERICA 35801 1 Order Now
MOUSER WORLDWIDE 9214 1 Order Now
Farnell Element14 EUROPE 4423 1 Order Now

Distributor reported inventory date: 2019-04-17

Distributor Name

DIGIKEY

Stock

7774

Min.Order

1

Region

WORLDWIDE Order Now

Newark Element14

Stock

1119

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

35801

Min.Order

1

Region

AMERICA Order Now

MOUSER

Stock

9214

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

4423

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-04-17

Buy direct
STC3115AIJT Chip Scale Package 0.4mm pitch Tape And Reel -40 85
Active
- EAR99
MORE INFO

Country of Origin:

CHINA

Check Availability

Distributor availability ofSTC3115AIJT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 9809 1 Order Now
AVNET AMERICA 10000 0 Order Now
Newark Element14 AMERICA 2000 0 Order Now
ARROW AMERICA 71540 5000 Order Now
MOUSER WORLDWIDE 10549 1 Order Now
Farnell Element14 EUROPE 2540 1 Order Now

Distributor reported inventory date: 2019-04-17

Distributor Name

DIGIKEY

Stock

9809

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

10000

Min.Order

0

Region

AMERICA Order Now

Newark Element14

Stock

2000

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

71540

Min.Order

5000

Region

AMERICA Order Now

MOUSER

Stock

10549

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2540

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-04-17

Buy direct
STC3115IJT Chip Scale Package 0.4mm pitch Tape And Reel -40 85
Active
- EAR99
MORE INFO

Country of Origin:

CHINA

Check Availability

Distributor availability ofSTC3115IJT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1176 1 Order Now
ARROW EUROPE 5000 0 Order Now
Newark Element14 AMERICA 2000 0 Order Now
ARROW AMERICA 5000 5000 Order Now
MOUSER WORLDWIDE 7347 1 Order Now
Farnell Element14 EUROPE 2835 1 Order Now

Distributor reported inventory date: 2019-04-17

Distributor Name

DIGIKEY

Stock

1176

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

5000

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

2000

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

5000

Min.Order

5000

Region

AMERICA Order Now

MOUSER

Stock

7347

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2835

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-04-17

Buy direct
STC3115IQT UFDFPN 2X3 10L Tape And Reel -40 85
Active
- EAR99
MORE INFO

Country of Origin:

PHILIPPINES

Check Availability

Distributor availability ofSTC3115IQT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2651 1 Order Now
ARROW EUROPE 3000 0 Order Now
Newark Element14 AMERICA 1200 0 Order Now
MOUSER WORLDWIDE 1283 1 Order Now
Farnell Element14 EUROPE 2355 1 Order Now

Distributor reported inventory date: 2019-04-17

Distributor Name

DIGIKEY

Stock

2651

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

3000

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

1200

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

1283

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2355

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-04-17

Buy direct

STC3115AIQT

Package

UFDFPN 2X3 10L

Packing Type

Tape And Reel

Unit Price (US$)

*

Distributor availability ofSTC3115AIQT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 7774 1 Order Now
Newark Element14 AMERICA 1119 0 Order Now
ARROW AMERICA 35801 1 Order Now
MOUSER WORLDWIDE 9214 1 Order Now
Farnell Element14 EUROPE 4423 1 Order Now

Distributor reported inventory date: 2019-04-17

Distributor Name

DIGIKEY

Stock

7774

Min.Order

1

Region

WORLDWIDE Order Now

Newark Element14

Stock

1119

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

35801

Min.Order

1

Region

AMERICA Order Now

MOUSER

Stock

9214

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

4423

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-04-17

Operating Temperature (°C)

(min)

-40

(max)

85

Marketing Status

Active

Unit Price (US$)

-

Quantity

-

ECCN (US)

EAR99

Country of Origin

-

STC3115AIJT

Package

Chip Scale Package 0.4mm pitch

Packing Type

Tape And Reel

Unit Price (US$)

*

Distributor availability ofSTC3115AIJT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 9809 1 Order Now
AVNET AMERICA 10000 0 Order Now
Newark Element14 AMERICA 2000 0 Order Now
ARROW AMERICA 71540 5000 Order Now
MOUSER WORLDWIDE 10549 1 Order Now
Farnell Element14 EUROPE 2540 1 Order Now

Distributor reported inventory date: 2019-04-17

Distributor Name

DIGIKEY

Stock

9809

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

10000

Min.Order

0

Region

AMERICA Order Now

Newark Element14

Stock

2000

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

71540

Min.Order

5000

Region

AMERICA Order Now

MOUSER

Stock

10549

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2540

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-04-17

Operating Temperature (°C)

(min)

-40

(max)

85

Marketing Status

Active

Unit Price (US$)

-

Quantity

-

ECCN (US)

EAR99

Country of Origin

CHINA

STC3115IJT

Package

Chip Scale Package 0.4mm pitch

Packing Type

Tape And Reel

Unit Price (US$)

*

Distributor availability ofSTC3115IJT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1176 1 Order Now
ARROW EUROPE 5000 0 Order Now
Newark Element14 AMERICA 2000 0 Order Now
ARROW AMERICA 5000 5000 Order Now
MOUSER WORLDWIDE 7347 1 Order Now
Farnell Element14 EUROPE 2835 1 Order Now

Distributor reported inventory date: 2019-04-17

Distributor Name

DIGIKEY

Stock

1176

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

5000

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

2000

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

5000

Min.Order

5000

Region

AMERICA Order Now

MOUSER

Stock

7347

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2835

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-04-17

Operating Temperature (°C)

(min)

-40

(max)

85

Marketing Status

Active

Unit Price (US$)

-

Quantity

-

ECCN (US)

EAR99

Country of Origin

CHINA

STC3115IQT

Package

UFDFPN 2X3 10L

Packing Type

Tape And Reel

Unit Price (US$)

*

Distributor availability ofSTC3115IQT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2651 1 Order Now
ARROW EUROPE 3000 0 Order Now
Newark Element14 AMERICA 1200 0 Order Now
MOUSER WORLDWIDE 1283 1 Order Now
Farnell Element14 EUROPE 2355 1 Order Now

Distributor reported inventory date: 2019-04-17

Distributor Name

DIGIKEY

Stock

2651

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

3000

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

1200

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

1283

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2355

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-04-17

Operating Temperature (°C)

(min)

-40

(max)

85

Marketing Status

Active

Unit Price (US$)

-

Quantity

-

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

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

Publications and Collaterals

    • Description Version Size Action
      Brochure Power management guide 10.2018
      4.42 MB
      PDF

      Brochure Power management guide

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**:

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.