DV2057T;DV2057;DV2057C;DV2057W;中文规格书,Datasheet资料.pdf

DV2057/C/T/W Advanced Li-Ion Charger Development System Control of On-Board Linear Regulator Features ➤ bq2057 charge-control evaluation and development system for single- and dual-cell Li-Ion packs with coke or graphite anodes ➤ Optional temperature monitoring before and during charge ➤ Proprietary AutoComp charge-rate compensation ➤ Integrated trickle-charge for conditioning deeply discharged batteries ➤ Regulated charge current and voltage ➤ Charge status output for LED or host-processor approximately 10% of the regulation current. The condi- interface to indicate charge-in-progress, tioning current also minimizes heat dissipation in the full-capacity, and fault conditions external pass element during the initial stage of charge. ➤ Automatic battery-re-charge feature Once the battery voltage reaches the internal threshold, VMIN, full charge begins. The DV2057/C/T/W complete ➤ Charge termination by minimum current the charge cycle in two phases. While the pack is below the regulation voltage, a constant-current phase replen- ➤ Direct battery connection ishes approxi