TI gas gauge IC monitors lead-acid batteries - Embedded.com

TI gas gauge IC monitors lead-acid batteries

The bq34z110 gas gauge IC from Texas Instruments Incorporated is a lead-acid battery management gas gauge integrated circuit with TI’s proprietary Impedance Track capacity measurement technology. The bq34z110 comes in a small 14-pin package, and according to the company is the industry’s only scalable power management device to support multi-cell lead-acid battery packs with battery voltages of 4 V, 12 V, 24 V, 48 V and higher. The gauge supports batteries used in mobile and stationary applications like medical instruments, wireless base stations and telecom shelters, e-bikes, inverters and uninterruptible power supplies (UPS).

The bq34z110 constantly informs a user about the battery’s state-of-health and state-of-charge and maintains up to a 95-percent accurate capacity measurement for the entire life of the battery. This information also prevents premature shutdown, increasing the longevity of the battery and end-equipment.

Key features

  • Supports a wide range of lead acid batteries (4 V to 64 V), including large capacity batteries (1 Ahr to 65 Ahr and higher) and high-current applications (0 A to 32 A and higher).
  • 95-percent accurate battery capacity measurement with TI’s Impedance Track algorithm, which uses current, voltage measurements, temperature and battery characteristics to determine battery state-of-charge, state-of-health and capacity.
  • Easy setup configuration with application notes, user guide and bq34z110EVM evaluation module.

More information


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