bq34z100

bq34z100 www.ti.com SLUSAU1B – MAY 2012 – REVISED DECEMBER 2012 Wide Range Fuel Gauge with Impedance Track™ Technology Check for Samples: bq34z100 FEATURES 1 23 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 APPLICATIONS Light Electric Vehicles Power Tools Medical Instrumentation Uninterruptible Power Supplies (UPS) Mobile Radios DESCRIPTION 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, ...