BQ2057 BQ2057WTSTR Charger IC Lithium-Ion/Polymer 8-TSSOP

Features

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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

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 and Highor

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