BQ2011KSN-D121

GAS GAUGE FOR HIGH DISCHARGE RATES 5A, SMALL PACK CAPACITIES 2Ah, 5MOHM SENSE RESISTOR WITH

General Description

The bq2011K Gas Gauge IC is in tended for battery-pack installation to maintain an accurate record of a bat tery’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 ac tivity of the battery. The bq2011K is designed for systems such as power tools with very high discharge rates.

Features

➤ Conservative and repeatable measurement of available charge in rechargeable batteries

➤ Designed for portable equipment such as power tools with high discharge rates

➤ Designed for battery pack integration

   - 120µA typical standby current self-discharge estimation mode

   - Small size enables implementations in as little as 1/2 square inch of PCB

➤ Direct drive of LEDs for capacity display

➤ Self-discharge compensation using internal temperature sensor

➤ Simple single-wire serial communications port for subassembly testing

➤ 16-pin narrow SOIC