BQ20Z90 Datasheet PDF

●The BQ20Z90DBT-V150 is a SBS v1.1 compliant Gas Gauge for use with the BQ29330. It is designed for battery-pack or in-system installation. It measures and maintains an accurate record of available charge in Li-ion or Li-polymer batteries using its integrated high-performance analog peripherals. It monitors capacity change, battery impedance, open-circuit voltage and other critical parameters of the battery pack and reports the information to the system host controller over a serial-communication bus. It is designed to work with the BQ29330 analog front-end (AFE) protection IC to maximize functionality and safety and minimize component count and cost in smart battery circuits. The Impedance Track technology continuously analyzes the battery impedance, resulting in superior gas-gauging accuracy. This enables remaining capacity to be calculated with discharge rate, temperature and cell aging all accounted for during each stage of every cycle.

● Better than 1% error over lifetime of the battery

● Instant accuracy - no learning cycle required

● Supports the smart battery specification SBS V1.1

● Full array of programmable voltage, current and temperature protection features

● Better than 0.65nVh of resolution

● Self-calibrating

● Extensive data reporting options for improved system interaction

● Supports SHA-1 authentication

● Lifetime data logging

● Green product and no Sb/Br