BQ2057PDGKG4

Overview

The BQ2057PDGKG4 is a single-cell lithium-ion or lithium-polymer battery charger integrated circuit manufactured by Texas Instruments. It operates within a supply voltage range of up to 15V and supports a battery pack voltage of 4.1V. The device features programmable constant-current charging capabilities and is housed in an 8-VSSOP surface-mount package. It is designed for operation across a temperature range of -20°C to 70°C.

Feature Summary

• Supports charging for single-cell lithium-ion and lithium-polymer batteries
• Features programmable constant-current charging control
• Operates with a maximum supply voltage of 15V

Applications

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

Procurement Notes

Verify component status as the BQ2057PDGK series is listed as obsolete. Confirm availability through authorized distributors or alternative suppliers. Ensure the specific G4 suffix variant matches design requirements. Check for lead times and stock levels from verified vendors before integration into production schedules.

Selection Notes

Select this component for applications requiring a single-cell Li-Ion or Li-Po charge controller. The 8-VSSOP package suits space-constrained designs. Verify that the 15V maximum supply voltage aligns with the system input. Ensure thermal management meets the -20°C to 70°C operating range requirements for the intended environment.

Part Context

This part belongs to the BQ2057 family of battery chargers from Texas Instruments. The family includes variants for single and dual-cell configurations, such as the BQ2057CTS and BQ2057WTSTR. These ICs provide linear charge management solutions for portable applications, differing primarily in cell count and output voltage specifications.

Replacement Considerations

Publicly confirmed substitute: MCP73843-420I/MS (Microchip Technology). Verify pin compatibility and electrical parameters before substitution.