BQ2013H - Benchmarq

BQ2013H Gas Gauge IC

The bq2013H Gas Gauge IC is intended for battery-pack installation to maintain an accurate record of a battery’s available charge. The IC monitors a voltage drop across a sense resistor connected in series between the negative battery terminal and ground to determine charge and discharge activity of the battery. The bq2013H is designed for high cpaacity batt.

Features

➤ Accurate measurement of available charge in rechargeable batteries ➤ Designed for electric assist bicycles and other applications ➤ Measures a wide dynamic current range ➤ Supports NiCd, NiMH or lead acid ➤ Designed for battery pack inte- gration - 120µA typical standby current (self-discharge estimation mode) - Small size enables imple- mentations in as little as 1 2 square inch of PCB ➤ Direct drive of LEDs for capacity display ➤ Automatic charge and selfdischarge compensation using in- ternal temperature sensor ➤ Simple single-wire serial communications port for subassem.