Texas Instruments BQ2057 Manuals

This document introduces the features of the BENCHMARQ bq2057 series advanced Li-Ion linear charge-management ICs, including 0.3V dropout voltage, dynamic compensation of battery pack's internal impedance, optional temperature-monitoring before and during charge, integrated voltage and current regulation with programmable charge-current and high- or low-side current sensing, integrated cell conditioning for reviving deeply discharged cells and minimizing heat dissipation during initial stage of charge, better than ±1% voltage regulation accuracy, charge status output for LED or host processor interface, automatic battery-recharge feature, charge termination by minimum current and low-power sleep mode.

This product is a lithium-ion battery charging management IC with low-voltage drop-out protection. It can be used for single or dual cell lithium-ion battery packs and supports coke or graphite anode materials.

The BENCHMARQ bq2057 series advanced Lithium-Ion (Li-Ion) and Lithium-Polymer (Li-Pol) linear charge-management ICs are designed for cost-sensitive and compact portable electronics. They combine high-accuracy current and voltage regulation, battery conditioning, temperature monitoring, charge termination, charge-status indication, and AutoComp to improve performance, lower cost and enable smaller size.