BQ2057WTS SMD IC Li-Ion, Li-Pol From TEXAS INSTRUMENTS (Original)

Specifications: 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 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