TI BQ34Z100PWR-R2

The BQ34Z100-R2 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 16.7 KV can be easily supported through an external voltage translation circuit that is controlled automatically to reduce system power consumption. The BQ34Z100-R2 device provides several interface options, including an I²C peripheral, an HDQ peripheral, one or four direct LEDs, and an ALERT output pin. Additionally, the BQ34Z100-R2 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 16.7 KV
• Aging compensation
• Self-discharge compensation
• Supports battery capacities up to 7000 Ah with standard configuration options
• Supports charge and discharge currents up to 8160 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
• Medical instrumentation
• Mobile radios
• Power tools
• Uninterruptible power supplies (UPS)