BQ2057CSN

Battery Chargers Overview

The BQ2057CSN is a linear charge management integrated circuit designed for single-cell lithium-ion and lithium-polymer batteries. It operates within a supply voltage range of 4.5 V to 15 V and delivers a regulated output voltage of 4.2 V with an output current capability of 2 A. The device is housed in an SOIC-8 surface-mount package and supports operation across a temperature range of -20 °C to +70 °C.

Battery Chargers Feature Summary

• Linear charging architecture optimized for single-cell lithium-ion and polymer battery chemistries
• Integrated low-dropout regulator providing stable 4.2 V output for precise cell charging
• Supports programmable constant-current charging profiles via external components

Battery Chargers Applications

• Single-cell portable electronic devices requiring compact power solutions
• Consumer electronics utilizing lithium-ion or lithium-polymer battery packs
• Industrial equipment with limited space for battery management systems

Battery Chargers Procurement Notes

Verify the specific suffix 'SN' confirms the SOIC-8 package variant when sourcing. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure design compatibility with the required 4.5 V to 15 V input supply range and thermal management needs for the specified operating temperature limits.

Battery Chargers Selection Notes

Select this component for applications requiring a simple, cost-effective linear charging solution for single-cell Li-Ion or Li-Po batteries. It is suitable where board space is constrained by the SOIC-8 footprint and input voltages remain within the 4.5 V to 15 V operational window. Consider thermal dissipation requirements given the linear regulation nature at higher input-output differentials.

Battery Chargers Part Context

Part of the Texas Instruments BQ2057C series, which focuses on basic battery charge management functions. This series provides essential charging control without complex fuel gauge capabilities, serving as a foundational power management block for simpler portable systems compared to more advanced multi-cell or smart battery controllers.

Battery Chargers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source data.