Battery monitor IC with alarm output for gas gauge applications

The STC3105 battery monitor includes the hardware functions required to implement a low-cost gas gauge for battery monitoring. The STC3105 uses accurate measurements of the battery voltage to estimate a battery’s state-of-charge (SOC). It uses a low cost sense resistor to precisely sense the charge or discharge states, detect light-load conditions without ambiguity for voltage measurements, and accurate SOC calculation. The coulomb counter method is used for SOC tracking in high-load conditions.

An alarm output signals a low SOC condition, and can also indicate low battery voltage. The alarm threshold levels are programmable.

The device is programmable through an I2C interface.

Key Features

  • 0.5% accuracy battery voltage monitoring
  • Low battery alarm output with programmable thresholds
  • Low power: 60 μA in power-saving mode, 2 μA max in standby mode
  • Ideal for implementation of robust gas gauge systems using open-circuit voltage and coulomb counter methods
  • Small 3x2 mm package

デザイン

技術文書

製品スペック
Description バージョン サイズ
DS8643 DS8643: Battery monitor IC with alarm output for gas gauge applications 1.1 320 KB
アプリケーションノート
Description バージョン サイズ
AN3395 AN3395: Sensing resistor selection and usage in STC310x battery monitoring applications 1.2 149 KB
ユーザマニュアル
Description バージョン サイズ
UM1054 UM1054: STEVAL-ISB013v1 demonstration board based on the STC3105 battery monitor IC with alarm output for gas gauge applications 1.2 305 KB

プレゼンテーション & トレーニング資料

プレゼンテーション
Description バージョン サイズ
Health and Wellness Mobility Cloud computing 1 MB

Publications and Collaterals

パンフレット
Description バージョン サイズ
Brochure Power management guide 05.2016 4 MB

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サンプル & 購入

製品型番 パッケージ Packing Type Operating Temperature (°C) (min) Operating Temperature (°C) (max) Marketing Status Unit Price (US$) * 数量 ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
STC3105IQT TDFN 3.0X2.0X0.75 8L PITCH 0.65 Tape And Reel -40 85 NRND - - NEC EAR99 MALAYSIA 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

品質 & 信頼性

製品型番 Marketing Status パッケージ Grade RoHS Compliance Grade Material Declaration**
STC3105IQT NRNDTDFN 3.0X2.0X0.75 8L PITCH 0.65IndustrialNot compliant
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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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