Gas gauge IC with alarm output

The GG25L includes the hardware functions required to implement a low-cost gas gauge for battery monitoring. The GG25L 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 GG25L offers advanced features to ensure high performance gas gauging in all application conditions.

Key Features

  • OptimGaugeTM 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 with debounce delay
  • Low battery level alarm output with programmable thresholds
  • Internal temperature sensor
  • Battery swap detection
  • Low power: 45 μA in power-saving mode, 2 μA max in standby mode
  • 1.4 x 2.0 mm 10-bump CSP package

Design

Technical Documentation

Product Specifications
Description Version Size
DS10206 DS10206: Gas gauge IC with alarm output 1.0 580 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 05.2016 4 MB
Support & Community



Sample & Buy

Part Number Package Packing Type Operating Temperature (°C) (min) Operating Temperature (°C) (max) Marketing Status Unit Price (US$) * Quantity ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
GG25LJ Chip Scale Package 0.4mm pitch Tape And Reel -40 85 NRND - - NEC EAR99 CHINA MORE INFO DISTRIBUTOR AVAILABILITY
GG25LAJ Chip Scale Package 0.4mm pitch Tape And Reel -40 85 NRND - - NEC EAR99 CHINA MORE INFO 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**
GG25LJ NRNDChip Scale Package 0.4mm pitchIndustrialEcopack3 0 0
GG25LAJ NRNDChip Scale Package 0.4mm pitchIndustrialEcopack3 0 0
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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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