TI BQ34Z100PWR-G1

The bq34z100-G1 device is an Impedance Track™ fuel gauge for Li-Ion, PbA, NiMH, and NiCd batteries, and works independently of battery series-cell configurations. Batteries from 3 V to 65 V can be easily supported through an external voltage translation circuit that is controlled automatically to reduce system power consumption. The bq34z100-G1 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-G1 provides support for an external port expander for more than four LEDs.

• Supports Li-Ion, LiFePO4, PbA, NiMH, and NiCd Chemistries
• Capacity Estimation Using Patented Impedance Track™ Technology for Batteries from 3 V to 65 V
• Aging Compensation
• Self-Discharge Compensation
• Supports Battery Capacities up to 29 Ah with Standard Configuration Options
• Supports Charge and Discharge Currents up to 32 A with Standard Configuration Options
• 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: <145-μA Average
  • Sleep: <84-μA Average
  • Full Sleep: <30-μA Average
• Package: 14-Pin TSSOP

• Light Electric Vehicles
• Power Tools
• Medical Instrumentation
• Uninterruptible Power Supplies (UPS)
• Mobile Radios