STC3115:Gas gauge IC with alarm output for handheld applications

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
Product Specifications
DescriptionVersionSize
DS9300: Gas gauge IC with alarm output for handheld applications7.0837 KB
Application Notes
DescriptionVersionSize
AN4324: STC3115 system integration2.0847 KB
User Manuals
DescriptionVersionSize
UM1836: STSW-BAT001 open source driver for the STC31151.0153 KB
Presentations
DescriptionVersionSize
Health and Wellness Mobility Cloud computing1 MB
Brochures
DescriptionVersionSize
Brochure Power management guide05.20164 MB
Evaluation Tool Software
Part NumberManufacturerDescription
STSW-BAT001STSTC3115 Open source driver
Solution Evaluation Tools
Part NumberManufacturerDescription
STEVAL-ISB014V2Battery monitoring with alarm output for gas gauge applications based on the STC3115
STEVAL-WESU1STWearable sensor unit reference design for fast time to market
Sample & Buy
Part NumberPackagePacking TypeOperating Temperature (°C) (min)Operating Temperature (°C) (max)Unit Price (US$) *QuantityECCN (EU)ECCN (US)Country of Origin
STC3115AIQTUFDFPN 2X3 10LTape And Reel-4085--NECEAR99-
STC3115AIJTChip Scale Package 0.4mm pitchTape And Reel-4085--NECEAR99CHINA
STC3115IJTChip Scale Package 0.4mm pitchTape And Reel-4085--NECEAR99CHINA
STC3115IQTUFDFPN 2X3 10LTape And Reel-4085--NECEAR99PHILIPPINES
Quality & Reliability
Part NumberPackageGradeRoHS Compliance GradeMaterial Declaration**
STC3115AIQTUFDFPN 2X3 10LIndustrialEcopack3md_a0y4-wspc-ufdfpn-wspc-2x3x0.6-wspc-10l-wspc-pitch-wspc-0.5_bcg(v788aej-wspc-(stc3115aiqt)_a_ver2_signed.pdf
md_a0y4-wspc-ufdfpn-wspc-2x3x0.6-wspc-10l-wspc-pitch-wspc-0.5_bcg(v788aej-wspc-(stc3115aiqt)_a_ver2.xml
STC3115AIJTChip Scale Package 0.4mm pitchIndustrialEcopack3md_n5-wspc-csps0.4-wspc-bp-wspc-5-16_dkn5v788adj-wspc-(stc3115aijt)-wspc-wcp-wspc-ver2_signed.pdf
md_n5-wspc-csps0.4-wspc-bp-wspc-5-16_dkn5v788adj-wspc-(stc3115aijt)-wspc-wcp-wspc-ver2.xml
STC3115IJTChip Scale Package 0.4mm pitchIndustrialEcopack3md_n5-wspc-csps0.4-wspc-bp-wspc-5-16_bkn5-wspc-v788adj_vers2_sdm_signed.pdf
md_n5-wspc-csps0.4-wspc-bp-wspc-5-16_bkn5-wspc-v788adj_vers2.xml
STC3115IQTUFDFPN 2X3 10LIndustrialEcopack3
Gas gauge IC with alarm output for handheld applications STC3115
STC3115 system integration STC3115
STSW-BAT001 open source driver for the STC3115 STC3115
Tutorial for MEMS microphones MP23AB02B
Very low drop voltage regulators with inhibit KFXX
md_a0y4-wspc-ufdfpn-wspc-2x3x0.6-wspc-10l-wspc-pitch-wspc-0.5_bcg(v788aej-wspc-(stc3115aiqt)_a_ver2_signed.pdf STC3115
md_a0y4-wspc-ufdfpn-wspc-2x3x0.6-wspc-10l-wspc-pitch-wspc-0.5_bcg(v788aej-wspc-(stc3115aiqt)_a_ver2.xml STC3115
md_n5-wspc-csps0.4-wspc-bp-wspc-5-16_dkn5v788adj-wspc-(stc3115aijt)-wspc-wcp-wspc-ver2_signed.pdf GG25L
md_n5-wspc-csps0.4-wspc-bp-wspc-5-16_dkn5v788adj-wspc-(stc3115aijt)-wspc-wcp-wspc-ver2.xml GG25L
md_n5-wspc-csps0.4-wspc-bp-wspc-5-16_bkn5-wspc-v788adj_vers2_sdm_signed.pdf GG25L
md_n5-wspc-csps0.4-wspc-bp-wspc-5-16_bkn5-wspc-v788adj_vers2.xml GG25L