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BQ2057 Datasheet PDF

Part Series:BQ2057 Series
Category:Battery Management
Description:Battery Charge Management Low Dropout Linear 1-cell Li-Ion Charge Controller with AutoCompTM, 4.2V Linear Charge Management Li-Ion/Li-Pol 2000mA 4.2V 8Pin SOIC Tube
Document:BQ2057WSN Datasheet PDF (34 Pages)

BQ2057 Datasheet PDF Battery Management

33 Pages
TI
Battery Charge Management Low Dropout Linear 1-cell Li-Ion Charge Controller with AutoCompTM, 4.2V Linear Charge Management Li-Ion/Li-Pol 2000mA 4.2V 8Pin SOIC Tube
33 Pages
TI
Battery Charge Management Low Dropout Linear 2-cell Li-Ion Charge Controller with AutoCompTM, 8.4V Linear Charge Management Li-Ion/Li-Pol 2000mA 8.4V 8Pin SOIC T/R
33 Pages
TI
Battery Charge Management Low Dropout Linear 2-cell Li-Ion Charge Controller with AutoCompTM, 8.4V Linear Charge Management Li-Ion/Li-Pol 2000mA 8.4V 8Pin TSSOP T/R
33 Pages
TI
Battery Charge Management Low Dropout Linear 1-cell Li-Ion Charge Controller with AutoCompTM, 4.2V Linear Charge Management Li-Ion/Li-Pol 2000mA 4.2V 8Pin TSSOP T/R
33 Pages
TI
Battery Charge Management Low Dropout Linear 1-cell Li-Ion Charge Controller with AutoCompTM, 4.2V Linear Charge Management Li-Ion/Li-Pol 2000mA 4.2V 8Pin TSSOP Tube
33 Pages
TI
Battery Charge Management Low Dropout Linear 2-cell Li-Ion Charge Controller with AutoCompTM, 8.4V Linear Charge Management Li-Ion/Li-Pol 2000mA 8.4V 8Pin TSSOP Tube
33 Pages
TI
Battery Charge Management Low Dropout Linear 1-cell Li-Ion Charge Controller with AutoCompTM, 4.2V Linear Charge Management Li-Ion/Li-Pol 2000mA 4.2V 8Pin SOIC T/R
33 Pages
TI
Battery Charge Management Low Dropout Linear 1-cell Li-Ion Charge Controller with AutoCompTM, 4.2V Linear Charge Management Li-Ion/Li-Pol 2000mA 4.2V 8Pin VSSOP Tube
33 Pages
TI
Battery Charge Management Low Dropout Linear 2-cell Li-Ion Charge Controller with AutoCompTM, 8.2V Linear Charge Management Li-Ion/Li-Pol 2000mA 8.2V 8Pin TSSOP Tube
33 Pages
TI
Battery Charge Management Low Dropout Linear 1-cell Li-Ion Charge Controller with AutoCompTM, 4.2V Linear Charge Management Li-Ion/Li-Pol 2000mA 4.2V 8Pin VSSOP T/R
33 Pages
TI
Battery Charge Management Low Dropout Linear 1-cell Li-Ion Charge Controller with AutoCompTM, 4.1V Linear Charge Management Li-Ion/Li-Pol 2000mA 4.1V 8Pin SOIC Tube
33 Pages
TI
Battery Charge Management Low Dropout Linear 1-cell Li-Ion Charge Controller with AutoCompTM, 4.1V Linear Charge Management Li-Ion/Li-Pol 2000mA 8.2V 8Pin TSSOP Tube
33 Pages
TI
Battery Charge Management Low Dropout Linear 2-cell Li-Ion Charge Controller with AutoCompTM, 8.2V Linear Charge Management Li-Ion/Li-Pol 2000mA 8.2V 8Pin TSSOP T/R
33 Pages
TI
Battery Charge Management Low Dropout Linear 1-cell Li-Ion Charge Controller with AutoCompTM, 4.1V Linear Charge Management Li-Ion/Li-Pol 2000mA 4.1V 8Pin VSSOP Tube
33 Pages
TI
Linear Charge Management Li-Ion/Li-Pol 2000mA 4.2V 8Pin TSSOP T/R
33 Pages
TI
Linear Charge Management Li-Ion/Li-Pol 2000mA 4.2V 8Pin VSSOP T/R

BQ2057CSN - TI Specifications

TYPE
DESCRIPTION
Mounting Style
Surface Mount
Number of Pins
8 Pin
Supply Voltage (DC)
15.0V (max)
Case/Package
SOIC-8
Input Voltage (DC)
15.0 V
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BQ2057CSN - TI Function Overview

The BQ2057CSN is a Lithium-ion (Li-ion) and Lithium-polymer (Li-pol) linear charge-management Integrated Circuit which is designed for compact portable electronics. The BQ2057 continuously measures battery temperature using an external thermistor. For safety, the charge controller inhibits charge until the battery temperature is within user-defined thresholds. The charge controller then charges the battery in three phases conditioning, constant current and constant voltage. If the battery voltage is below the low-voltage threshold, V(min), the charge controller precharges using a low current to condition the battery. The conditioning charge rate is approximately 10% of the regulation current. The conditioning current also minimizes heat dissipation in the external pass element during the initial stage of the charge. After conditioning, the charge controller applies a constant current to the battery. An external sense-resistor sets the current.
Requires small number of external components
Better than ±1% voltage regulation accuracy with pre-set voltages
AutoComp™ Dynamic compensation of battery pack"s internal impedance to reduce charge time
Optional cell-temperature monitoring before and during charge
Integrated voltage and current regulation with programmable charge-current
Integrated cell conditioning for reviving deeply discharged cells
Charge status output for single or dual led or host processor interface
Automatic battery-recharge feature
Charge termination by minimum current
Automatic low-power sleep mode when VCC is removed
EVMs Available for quick evaluation
Green product and no Sb/Br
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