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Texas Instruments BQ2057TSN — Power Management (PMIC / Gate Driver)

BQ2057TSN Texas Instruments Li-Ion/Polymer Charger IC –

MPNBQ2057TSN
Active

Texas Instruments BQ2057TSN, single-cell Lithium Ion/Polymer linear charger IC, 4.1V battery pack voltage, programmable constant-current, 8-SOIC surface-mount package, tube.

$3.1005Ref. price · indicative, final on quote
Texas Instruments BQ2057TSN datasheet (PDF)
Packaging8-SOIC (0.154", 3.90mm Width)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

BQ2057TSN specifications
ParameterValue
MountingSurface Mount
Battery pack voltage4.1V
Supply voltage15V
Current - chargingConstant - Programmable
Operating temperature-20°C~70°C(TA)
PackageTube
Case8-SOIC (0.154\", 3.90mm Width)
Number of cells1
Battery chemistryLithium Ion/Polymer
Programmable featuresCurrent

Product details

Single-cell Li-Ion/Polymer linear charger in 8-SOIC

The BQ2057TSN is a Texas Instruments linear charge-management IC designed for single-cell Lithium Ion or Lithium Polymer battery packs, with a fixed 4.1V charge-termination voltage. Charge current is programmable via an external resistor, allowing the designer to set the constant-current phase to match the cell's recommended rate.

Package and mounting – 8-SOIC tube delivery

Active production – sourcing posture

Because the part is active, buyers can commit to multi-year builds without a last-time-buy trigger.

Frequently asked questions

How can I order the BQ2057TSN or check stock and pricing?

The BQ2057TSN is an active Texas Instruments part. Submit an RFQ with your target quantity and we will confirm current availability, pricing, and lead time. The tube package (8-SOIC) is the standard ordering code for this line item.