BQ2056SNTR

Li-Ion Low-Dropout Linear Charge Management IC With AutoCompTM 8-SOIC -20 to 70

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