Skip to main content
Log in
Texas Instruments BQ2057CDGK — Power Management (PMIC / Gate Driver)

BQ2057CDGK Texas Instruments Li-Ion/Polymer Charger IC

MPNBQ2057CDGK
Active

Texas Instruments BQ2057CDGK, single-cell Li-Ion/Polymer linear charger IC, 4.2V battery pack voltage, programmable charge current, -20°C to 70°C, 8-TSSOP package, Tube delivery.

$2.8670Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

BQ2057CDGK specifications
ParameterValue
MountingSurface Mount
Battery pack voltage4.2V
Voltage15V
Current - chargingConstant - Programmable
Operating temperature-20°C~70°C(TA)
PackageTube
Case8-TSSOP, 8-MSOP (0.118\", 3.00mm Width)
Number of cells1
Battery chemistryLithium Ion/Polymer
Programmable featuresCurrent

Product details

Single-cell Li-Ion/Polymer charger with programmable current

The BQ2057CDGK is a single-cell linear charger IC for Lithium Ion and Lithium Polymer batteries, terminating at 4.2V pack voltage. Charge current is programmable via an external resistor — no I²C, no digital interface, just a resistor from the ISET pin to ground. Supply voltage maxes at 15V, so a 5V USB rail or a 12V wall adapter both work without a pre-regulator.

Active production, Tube delivery, sourcing posture

The standard delivery format is Tube (rail), which suits low-to-medium volume assembly. We source this part against your BOM quantity and confirm current pricing and lead time at quote. No stock-holding claim — availability is confirmed per RFQ.

Frequently asked questions

Can BQ2057CDGK charge Li-Polymer batteries?

Yes, the BQ2057CDGK is specified for both Lithium Ion and Lithium Polymer chemistries, with a 4.2V battery pack voltage.

What is the difference between BQ2057CDGK and BQ2057C?

Both share the same base product number BQ2057 and are functionally similar. The difference typically lies in the charge termination or status indicator logic — confirm the status pin behaviour matches your design before substituting.