bq34z110

bq34z110 www.ti.com SLUSB55B – JUNE 2012 – REVISED MAY 2013 Wide Range Fuel Gauge with Impedance Track™ for Lead-Acid Batteries Check for Samples: bq34z110 FEATURES 1 23 Supports Lead-Acid Chemistries Capacity Estimation Using Patented Impedance Track™ Technology for Batteries from 4 V to 64 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 bq34z110 is a fuel gauge solution that works independently of battery series-cell configurations, and supports Lead-Acid battery chemistries. Batteries from 4 V to 64 V can be supported through an external voltage translation circuit that can be controlled automatically to reduce system power consumption. The bq34z110 device provides several interface options, including an I2C slave, an HDQ slave, one or four direct LEDs, and an Alert output pin...