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Texas Instruments BQ771808DPJR — Discrete Semiconductors
Texas Instruments

BQ771808DPJR Battery Protection IC, 2-5 Cell Li-Ion, 8-WSON

MPNBQ771808DPJR
End of Life

Texas Instruments BQ771808DPJR battery protection IC, Li-Ion 2-5 cell, over-voltage fault protection, surface mount 8-WDFN exposed pad (8-WSON 3x4), -40°C to 110°C operating temperature, Tape & Reel.

$1.35Ref. price · indicative, final on quote
BQ771808DPJR datasheet
Packaging8-WDFN Exposed Pad
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

BQ771808DPJR Technical Specifications
ParameterValue
Mounting typeSurface Mount
Operating temperature-40°C ~ 110°C (TA)
PackageTape & Reel (TR); Cut Tape (CT)
FunctionBattery Protection
Case8-WDFN Exposed Pad
Number of cells2 ~ 5
Fault protectionOver Voltage
Battery chemistryLithium Ion

Product details

Battery protection for 2-5 cell Li-Ion stacks

The Texas Instruments BQ771808DPJR is a Li-Ion battery protection IC that monitors and protects 2 to 5 series-connected cells against over-voltage faults. It operates over a -40°C to 110°C temperature range.

Over-voltage protection — what it covers and what it doesn't

This part provides over-voltage fault protection only. It does not include over-current, short-circuit, or under-voltage detection. For a BOM that needs comprehensive protection (over-current, short, temperature), you would pair this with a separate protector or fuel gauge. The 2-5 cell range gives flexibility across different series-stack configurations, but the protection scope is narrow — design the rest of the safety chain accordingly.

Package and mounting

Surface-mount package with exposed pad (8-WSON 3x4). The exposed pad must be soldered to a thermal land on the PCB for rated dissipation. Tape & Reel (TR) or Cut Tape (CT) options available.

Lifecycle and compliance

ROHS3 compliant. No known PCN for this order code.

Frequently asked questions

What is the closest functional second-source for BQ771808DPJR?

The BQ79612PAPRQ1 is a different tier — it is an automotive-grade (AEC-Q100) battery monitor with SPI/UART interface, over-temperature protection, and a 1-cell range. It is not a pin-compatible or drop-in replacement. For a direct functional equivalent within the same protection-IC family, no official cross-reference is listed; the BQ771808DPJR is the active part for 2-5 cell over-voltage protection.

What is the function of BQ771808DPJR?

It is a Li-Ion battery protection IC that monitors 2 to 5 series cells and triggers a fault output on over-voltage conditions. It does not provide over-current, short-circuit, or under-voltage protection.

What package does BQ771808DPJR come in?

It is supplied in an 8-WDFN exposed pad package (also designated 8-WSON 3x4), available in Tape & Reel or Cut Tape.