Single-cell Li-Ion linear charger in 8-VSSOP
The BQ2057PDGKRG4 is a Texas Instruments linear charger IC designed for single-cell Lithium Ion/Polymer battery packs, with a charge termination voltage of 4.1V. It delivers a constant programmable charge current — set by an external resistor — making it a straightforward drop-in for portable devices that need a dedicated charge management IC. Packaged in an 8-VSSOP (3.00 mm width, 0.118-inch pitch), this surface-mount part fits compact PCB layouts common in handheld and wearable electronics. The supply voltage range extends to 15V, accommodating typical 5V USB or wall-adapter inputs without an external pre-regulator.
Obsolete — sourcing through independent channels
Buyers with an existing BOM line requiring this exact order code will need to source from independent distribution or broker inventory. The 8-VSSOP package and Tape & Reel (TR) packaging format are standard for this series, but date-code and lot traceability become critical when buying obsolete parts from the open market — a consistent marking font and package seal are the first screen against re-marked or relabeled stock.
Temperature grade and package fit
Rated for an operating temperature range of -20°C to 70°C, this charger suits consumer and commercial environments — indoor portable gear, battery-powered instruments, and handheld tools. The 8-VSSOP footprint is shared with other TI charger controllers, so a board-level swap to a different TI single-cell charger is mechanically feasible if the pinout matches.