与AutoComp⑩充电速率补偿低压降锂离子充电控制芯片 Low-Dropout Li-Ion Charge-Control ICs with AutoComp⑩ Charge-Rate Compensation
General Description
The bq2056 series ICs are low-cost precision linear charge-control devices for Li-Ion batteries. With a minimum number of external components, the bq2056 is a complete low dropout linear charger. The dropout voltage is typically less than 0.5V when the bq2056 is used with an external PNP transistor or P-channel FET. Features include proprietary automatic charge-rate compensation AutoComp and a trickle-charger in terface output for reviving deeply discharged cells. The bq2056 supports a single-cell 4.1V pack and the 2056T supports a two-cell 8.2V pack. The bq2056V may be externally programmed for supporting other voltages. All versions feature a sleep mode for low-power applications.
Features
➤ Significant reduction in charge time with AutoComp charge-rate compensation
➤ Ideal for low-dropout linear regulator design
➤ 1-cell, 2-cell, and programmable multicell versions
➤ Low-cost charger implementation with minimum number of external components
➤ Programmable current limit to accommodate any battery size
➤ Interface to external trickle charger for reviving deeply discharged batteries
➤ High-accuracy charge control
➤ Sleep mode for low power consumption
➤ Direct battery voltage sense without resistive dividers bq2056 and bq2056T
➤ Small 8-pin SOIC package