Texas Instruments High-Performance Analog PMIC - PMIC - Battery Management - BQ2083DBT BQ2083DBT

The BQ2083DBT is a battery management integrated circuit designed for accurate measurement of available charge in lithium-ion and lithium-polymer batteries. It complies with the Smart Battery Specification (SBS) V1.1 and is intended for use in conjunction with the TI bq29311 analog front-end protection IC, facilitating a compact and efficient battery pack design. The device features a low-power RISC CPU core and integrated flash memory, eliminating the need for external configuration EEPROM. This IC employs a high-resolution 16-bit integrating converter for measuring charge flow, achieving better than 3-nVh resolution and an offset error of less than 1-µV. It also utilizes a 16-bit delta-sigma converter for precise voltage and temperature measurements. Programmable cell modeling enhances battery fuel gauge accuracy, while the onboard ADC monitors individual cell voltages and supports safety features such as cell balancing. The BQ2083DBT communicates via the SMBus protocol, providing data on battery capacity, temperature, voltage, current, and remaining runtime predictions. It includes LED drivers for visual capacity indication and is packaged in a 38-pin TSSOP format, suitable for applications in notebook PCs, medical equipment, and portable instrumentation.