bq34Z100 Wide-Range Fuel Gauge

bq34Z100 Wide-Range Fuel Gauge

The Texas Instruments' bq34z100 is a fuel gauge solution that works independently of battery series-cell configurations, and supports a wide-range of Li-Ion and LiFePO4 battery chemistries. Batteries from 3 to 65 V can be supported through an external voltage translation circuit that can be controlled automatically to reduce system power consumption.

The bq34z100 device provides several interface options, including an I²C slave, an HDQ slave, one or four direct LEDs, and an alert output pin. Additionally, the bq34z100 provides support for an external port expander for more than four LEDs.

Features  
  • Supports Li-Ion and LiFePO4 chemistries
  • Capacity estimation using patented Impedance Track Technology for batteries from 3 to 65 V
    • Aging compensation
    • Self-discharge compensation
  • Supports battery capacities above 65 Ahr
  • Supports charge and discharge currents above 32 A
  • External NTC thermistor support
  • Supports two-wire I²C and HDQ single-wire communication interfaces with host system
  • SHA-1/HMAC authentication
  • One- or four-LED direct display control
Manufacturer