BQ2057WSN

Battery Chargers Overview

The BQ2057WSN is a low dropout linear charge controller designed for two-cell lithium-ion or lithium-polymer battery packs. It provides an output voltage of 8.4 V and supports an output current of 2 A. The device operates within a supply voltage range of 4.5 V to 15 V. It is housed in an 8-SOIC package with surface mount installation. The component functions across a temperature range from -20 °C to +70 °C.

Battery Chargers Feature Summary

• Integrates AutoComp technology for automatic compensation of system voltage drops during charging
• Supports programmable constant-current and constant-voltage charging profiles
• Includes thermal regulation to manage heat dissipation during operation

Battery Chargers Applications

• Portable electronic devices requiring two-cell battery management
• Lithium-ion power tool battery packs
• Medical equipment utilizing rechargeable lithium batteries

Battery Chargers Procurement Notes

Verify the specific suffix against official Texas Instruments documentation to confirm package type and environmental compliance. Confirm RoHS status and moisture sensitivity level requirements for your assembly process. Ensure the ordering part number matches the exact pinout and thermal characteristics required by your design.

Battery Chargers Selection Notes

Select this component for applications requiring a simple linear charging solution for two-series lithium cells. Consider the SOIC-8 package constraints and thermal performance limits. Verify that the input voltage source remains within the specified 4.5 V to 15 V operational range for stable regulation.

Battery Chargers Part Context

This part belongs to the BQ2057 family of battery chargers from Texas Instruments. Variants such as BQ2057WSNG4 indicate lead-free construction. Other members like BQ2057PDGK support single-cell configurations, while WSN variants are optimized for two-cell stacks.

Battery Chargers Replacement Considerations

Public confirmed substitute: BQ2057WSNTR.