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Texas Instruments BQ27505YZGR-J5 — Power Management (PMIC / Gate Driver)
Texas Instruments

BQ27505YZGR-J5 Battery Monitor, Impedance Track™

MPNBQ27505YZGR-J5
Active

Texas Instruments BQ27505YZGR-J5, Impedance Track™ series, Battery Monitor, I²C, Single-Cell Lithium Ion, -40°C~85°C, 12-DSBGA, Tape & Reel.

$4.6920Ref. price · indicative, final on quote
BQ27505YZGR-J5 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

BQ27505YZGR-J5 Technical Specifications
ParameterValue
SeriesImpedance Track™
Mounting typeSurface Mount
InterfaceI²C
Operating temperature-40°C~85°C(TA)
PackageTape & Reel (TR)
FunctionBattery Monitor
Case12-UFBGA, DSBGA
Number of cells1
Battery chemistryLithium Ion

Product details

Impedance Track™ fuel gauge for single-cell Li-Ion packs

The Texas Instruments BQ27505YZGR-J5 is a single-cell Lithium Ion battery monitor from the Impedance Track™ series, communicating over an I²C interface. It is designed for portable devices that need accurate state-of-charge reporting without a host-side coulomb counter — the gauge learns the battery's discharge curve over cycles and compensates for aging. The 12-DSBGA package (0.50 mm pitch BGA) keeps the footprint small but demands controlled reflow assembly and X-ray inspection — not a rework-friendly part.

Single-cell fit — not for multi-cell stacks

This gauge is specified for exactly one series cell. It cannot be used directly with a 2-cell or higher-voltage pack; the internal voltage measurement range and algorithm are calibrated for a single-cell stack. For multi-cell applications, look at the BQ40Z50 or BQ34Z100 family.

Frequently asked questions

Is BQ27505YZGR-J5 compatible with BQ27500?

The BQ27505 and BQ27500 share the same base Impedance Track™ architecture and I²C interface, but they are not drop-in replacements. The BQ27505 uses a different firmware algorithm and chemistry profile. Check the TI application note for the specific BQ27500-to-BQ27505 migration steps — register maps and data flash parameters differ.

What is the equivalent of BQ27505YZGR-J5?

The closest equivalent within the same family is the BQ27500 series, but firmware and chemistry configuration differ. No exact pin-compatible second source exists outside TI's own portfolio. For a drop-in alternative, the BQ27505YZGR-J5 itself remains the active reference.

Can BQ27505YZGR-J5 be used with a 2-cell battery?

No. It is specified for one cell only. Using it with a 2-cell stack would exceed the input voltage range and the gauge algorithm is not calibrated for series cells. For multi-cell packs, use a gauge designed for that purpose, such as the BQ40Z50 series.