Features: Significant reduction in charge time with AutoComp charge-rate compensationIdeal for low-dropout linear regul atordesign1-cell, 2-cell, and programmable multicellversionsLow-cost charger implementation with minimum number of externalcomponentsProgrammable current limit to accommodateanyb...
bq2056T: Features: Significant reduction in charge time with AutoComp charge-rate compensationIdeal for low-dropout linear regul atordesign1-cell, 2-cell, and programmable multicellversionsLow-cost charger i...
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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
Symbol | Parameter | Minimum | Maximum | Unit | Notes |
VCC | VCC relative to VSS | -0.3 | 18 | V | |
VT | DC voltage applied on any pin (excluding VCC )relative to VSS |
-0.3 | VCC+0.3 | V | |
TOPR | Operating ambient temperature | -20 | 70 | °C | Commercial |
TSTG | Storage temperature | -40 | 125 | °C | |
TSOLDER | Soldering temperature | - | 260 | °C | 10 sec max. |
PD | Power dissipation | 300 | mV |
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 bq2056T 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.