BQ34Z100

• Supports Li-Ion and LiFePO4 Chemistries
• Capacity Estimation Using Patented Impedance Track Technology
  for Batteries from 3 V 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
• Five-LED and Higher Display Through Port Expander
• Reduced Power Modes (Typical Battery Pack Operating Range Conditions)
  • Normal Operation: < 140 µA Average
  • Sleep: < 64 µA Average
  • Full Sleep: < 19 µA Average
• Package: 14-Pin TSSOP

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 V 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.