bq2056V

Significant reduction in charge time with AutoComp charge-rate compensation
Ideal for low-dropout linear regul atordesign
1-cell, 2-cell, and programmable multicellversions
Low-cost charger implementation with minimum number of externalcomponents
Programmable current limit to accommodateanybatterysize
Interface to external trickle charger for reviving deeply dischargedbatteries
High-accuracychargecontrol
Sleep mode for low power consumption
Direct battery voltage sense without resistive dividers (bq2056andbq2056T)
Small8-pinSOICpackage

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 of BQ2050SND119TR is typically less than 0.5V when the bq2056 is used with an external PNP transistor or P-channel FET. Features include proprietaryautomatic charge-rate compensation (AutoComp) and a trickle-charger interface 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 modeforlow-powerapplications.