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Texas Instruments BQ25306RTER — Power Management (PMIC / Gate Driver)
Texas Instruments

BQ25306RTER 2-cell Li-ion charger, 3 A max, USB, 16-WQFN

MPNBQ25306RTER
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Texas Instruments BQ25306RTER 2-cell Li-Ion/Polymer charger IC, 3 A max charge current, 9 V battery pack, USB interface, 16-WFQFN exposed pad, -40°C to 85°C.

$2.3500Ref. price · indicative, final on quote
BQ25306RTER datasheet
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

BQ25306RTER Technical Specifications
ParameterValue
Mounting typeSurface Mount
Battery pack voltage9V
Voltage17V
Current - chargingConstant - Programmable
Charge current - max3A
InterfaceUSB
Operating temperature-40°C~85°C(TA)
PackageTape & Reel (TR); Cut Tape (CT)
Case16-WFQFN Exposed Pad
Number of cells2
Fault protectionOver Voltage
Battery chemistryLithium Ion/Polymer
Programmable featuresVoltage

Product details

2-cell Li-ion charger with USB input and 3 A ceiling

The Texas Instruments BQ25306RTER is a 2-cell Li-ion/polymer battery charger IC that takes a USB input and delivers a programmable charge current up to 3 A to a 9 V battery pack.

Charge current and cell count — the fit decision

The 3 A maximum charge current sets the charge-time floor for a 2-cell pack: a 2000 mAh 2S pack charges at roughly C/0.67, which is fast enough for most field tools but not a supercharger. The 9 V battery pack voltage confirms this is a 2-cell charger — a 1S pack at 4.2 V or a 3S pack at 12.6 V will not terminate correctly.

USB interface and programmable voltage

The USB interface means this charger can be powered from a standard 5 V USB port or a 5 V wall adapter. The programmable voltage feature lets you set the regulation voltage for the 2-cell pack, which is useful if your battery chemistry or cell balance requires a slightly different float voltage than the default. The constant-current charging mode is programmable via an external resistor, giving you control over the charge rate without firmware.

Package and temperature grade

Surface-mount assembly is straightforward with a standard reflow profile for QFN packages.

Frequently asked questions

Does the BQ25306RTER work with 2-cell batteries?

Yes. The BQ25306RTER is designed for 2-cell Li-ion/polymer packs with a nominal 9 V battery pack voltage. It will not properly charge a 1-cell or 3-cell pack.

What is the maximum charge current of the BQ25306RTER?

The maximum charge current is 3 A. The charge current is constant and programmable via an external resistor.