BQ2057CDGKR

Battery Chargers Overview

The BQ2057CDGKR is a low dropout linear charge management integrated circuit designed for lithium-ion and lithium-polymer battery applications. Manufactured by Texas Instruments, this component operates within a supply voltage range of 4.5 V to 15 V and delivers an output current capability of 2 A. It provides a regulated output voltage of 4.2 V, suitable for single-cell charging profiles. The device is housed in an 8-pin VSSOP package with surface mount installation. It supports an operating temperature range from -20 °C to +70 °C.

Battery Chargers Feature Summary

• Integrates low dropout linear regulation for efficient single-cell charging
• Supports both lithium-ion and lithium-polymer battery chemistries
• Features programmable constant-current charging control

Battery Chargers Applications

• Portable electronic devices requiring single-cell power sources
• Consumer electronics utilizing lithium-ion or lithium-polymer batteries
• Battery-powered equipment needing compact linear charge management solutions

Battery Chargers Procurement Notes

Verify the specific suffix 'DGKR' corresponds to the VSSOP-8 package and tape-and-reel delivery format as indicated by distributor listings. Confirm RoHS compliance status and moisture sensitivity level requirements against your assembly process specifications before finalizing procurement orders.

Battery Chargers Selection Notes

Select this component when a compact surface-mount solution is required for single-cell lithium battery charging. Ensure the application environment remains within the specified -20 °C to +70 °C operational temperature range. Verify that the system input voltage stays within the 4.5 V to 15 V operating window to ensure proper functionality.

Battery Chargers Part Context

This part belongs to the BQ2057C series of battery management ICs from Texas Instruments. The series includes variants such as BQ2057CTS and BQ2057CSN, which share similar electrical characteristics but differ in packaging options like TSSOP-8 and SOIC-8. The BQ2057CDGKR specifically utilizes the VSSOP-8 form factor.

Battery Chargers Replacement Considerations

Public documentation identifies MCP73843-420I/MS as a substitute for related discontinued parts in the BQ2057 family. Verify pinout compatibility and thermal performance when considering alternative manufacturers.