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STC3105 Datasheet Battery Monitor

Manufacturer: STMicroelectronics

Overview: STC3105 Battery monitor IC with alarm output for gas gauge applications.

General Description

The STC3105 battery monitor includes the hardware functions required to implement a lowcost gas gauge for battery monitoring.

The STC3105 uses accurate measurements of the battery voltage to estimate a battery’s state-ofcharge (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.

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.

STC3105 Distributor