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bq2057 Datasheet Linear Charge Management

Manufacturer: Texas Instruments

Overview: bq2057, bq2057C bq2057T, bq2057W SLUS025F − MAY 2001 − REVISED JULY 2002 ADVANCED LINEAR CHARGE MANAGEMENT IC FOR SINGLEĆ AND TWOĆCELL LITHIUMĆION AND.

General Description

The BENCHMARQ bq2057 series advanced Lithium-Ion (Li-Ion) and Lithium-Polymer (Li-Pol) linear charge-management ICs are designed for costsensitive 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.

Key Features

  • D 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 D Requires Small Number of External Components D 0.3 V Dropout Voltage for Minimizing Heat Dissipation D Better Than ±1% Voltage Regulation Accuracy With Preset Voltages D AutoCompt Dynamic Compensation of Battery Pack’s Internal Impedance to Reduce Charge Time D Optional Cell-Temperature Monitoring Before and During Charge D Integrated Voltage and Current Regulation With Programmable Charge-Current and Hig.

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