BQ2057CDGKRG4

Battery Chargers Overview

The BQ2057CDGKRG4 is an advanced linear charge management integrated circuit designed for single and two-cell lithium-ion and lithium-polymer battery packs. It supports graphite or coke anode chemistries with a maximum output voltage of 4.2V per cell and a programmable constant current up to 2A. The device operates from a supply voltage range of 4.5V to 15V. It features continuous external thermistor monitoring for temperature safety and includes automatic recharge control. The component is housed in an 8-VSSOP package.

Battery Chargers Feature Summary

• Continuous external thermistor monitoring for battery temperature safety
• Automatic recharge control based on battery voltage thresholds
• Programmable constant current charging capability
• Supports both single and dual-cell lithium-ion/polymer configurations

Battery Chargers Applications

• Single-cell lithium-ion battery pack charging systems
• Dual-cell lithium-ion battery pack charging systems
• Lithium-polymer battery management applications
• Portable electronic devices requiring safe linear charging

Battery Chargers Procurement Notes

Verify the complete part number including the G4 suffix, which indicates RoHS compliance and green material status. Confirm the package type matches the design requirements, as the BQ2057 series offers multiple package options such as VSSOP and TSSOP. Ensure the specific variant selected aligns with the intended cell count and thermal management strategy for the target application.

Battery Chargers Selection Notes

Select this component when designing for single or dual-cell Li-Ion/Li-Po batteries using graphite or coke anodes. It is suitable for applications requiring precise temperature monitoring via external thermistors and automatic recharge functionality. Consider the 8-VSSOP package constraints and the 4.5V to 15V input voltage range during system architecture planning.

Battery Chargers Part Context

This part belongs to the Texas Instruments BQ2057C series of battery management ICs. The series provides linear charge management solutions for portable electronics. The BQ2057CDGKRG4 specifically denotes the version with the DGKR suffix indicating the 8-VSSOP package and reel tape packaging configuration within the broader product family.

Battery Chargers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.