BQ34Z100-R2 Multi-Chemistry Impedance Track™ Fuel Gauge

Product Highlights > BQ34Z100-R2 Multi-Chemistry Impedance Track™ Fuel Gauge

            BQ34Z100-R2 Multi-Chemistry Impedance Track™ Fuel Gauge
                    Texas Instruments' wide-range flexible gas gauge is designed for batteries with a range of 3 V to 16.7 kV
    

Image of Texas Instruments' BQ34Z100-R2 Multi-Chemistry Impedance Track™ Fuel Gauge Texas Instruments' BQ34Z100-R2 is an impedance track fuel gauge for Li-ion, PbA, NiMH, and NiCd batteries, and works independently from the battery series cell configurations. Batteries with a range of 3 V to 16.7 kV are easily supported through an external voltage translation circuit that is controlled automatically to reduce the 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. The gauge also has support for an external port expander and more than four LEDs.

Features

Supports Li-ion, LiFePO4, PbA, NiMH, and NiCd chemistries
Capacity estimation using patented impedance track technology for batteries with a range of 3 V to 16.7 kV
- Aging compensation
- Self-discharge compensation
Battery capacities: up to 7,000 Ah with standard configuration options
Charge and discharge currents: up to 8,160 A with standard configuration options
External NTC thermistor support

Supports two-wire I²C and HDQ single-wire communication interfaces with a host system
SHA-1/HMAC authentication
One- or four-LED direct display control
Five-LED and higher display through the port expander
Reduced power modes (typical battery pack operating range conditions):
- NORMAL operation: <145 µA (avg.)
- SLEEP: <84 µA (avg.)
- FULL SLEEP: <30 µA (avg.)
Package: 14-pin TSSOP

Applications

Light electric vehicles
Medical instrumentation
Mobile radios

Power tools
Uninterruptible power supplies (UPS)