BQ2057WSNTRG4

高级线性充电管理IC，适用于单节和两节锂离子和锂聚合物 ADVANCED LINEAR CHARGE MANAGEMENT IC FOR SINGLE-AND TWO-CELL LITHIUM-ION AND LITHIUM-POLYMER

DESCRIPON

The BENCHMARQ bq2057 series advanced Lithium-Ion Li-Ion and Lithium-Polymer Li-Pol linear charge-management ICs are designed for cost sensitive and compact portable electronics. They

combine high-accuracy current and voltage regulation, battery conditioning, temperature monitoring, charge termination, charge-status indication, and AutoComp charge-rate compensation in a single 8-pin IC. MSOP, TSSOP, and SOIC package options are offered to fit a wide range of end applications.

FEATURES

Ideal for Single 4.1 V or 4.2 V and Dual-Cell 8.2 V or 8.4 V Li-Ion or Li-Pol Packs

Requires Small Number of External Components

0.3 V Dropout Voltage for Minimizing Heat Dissipation

Better Than ±1% Voltage Regulation Accuracy With Preset Voltages

AutoCompDynamic 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 and High or Low-Side Current Sensing

Integrated Cell Conditioning for Reviving

   Deeply Discharged Cells and Minimizing Heat

   Dissipation During Initial Stage Of Charge

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

Packaging: 8-Pin SOIC, 8-Pin TSSOP, 8-Pin MSOP