Update: 30 September, 2023
The bq2058T Lithium Ion Pack Supervisor is a small, integrated product that provides over-voltage, under-voltage protection and overcurrent monitoring for two lithium-ion (Li-Ion) series cells, accommodating battery packs containing series/parallel configurations. The low operating current does not overdischarge the cells during periods of storage and does not significantly increase the system discharge load. The bq2058T can be part of a low-cost Li-Ion charge control system within the battery pack. The bq2058T controls two external FETs to limit the charge and discharge potentials. The bq2058T allows charging when each individual cell voltage is below VOV (overvoltage limit). If the voltage on any cell exceeds VOV for a user-configurable delay period (tOVD), the open-drain CHG pin goes to the high-impedance state, shutting off charge to the battery pack. This safety feature prevents overcharge of any cell within the battery pack. After an over-voltage condition occurs, each cell must fall below VCE (charge enable voltage) for the bq2058T to re-enable charging.
File format: PDF
Size: -
MD5 Checksum: 2380D58C837DDAC8CB73F2FBC8ADB993
Publication date: 03 July, 2012
Downloads: -
PDF Link: TEXAS INSTRUMENTS bq2058T handbook PDF