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BQ2971

ACTIVE

Li-Ion/Li Polymer Advanced Single-Cell Battery Protector IC Family

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Data sheet

BQ2971

ACTIVE
Data sheet Order now

Product details

Function Protection Number of series cells (min) 1 Number of series cells (max) 1 Features FET drive, Overcurrent during charge (OCC), Overcurrent during discharge (OCD), Overvoltage, Short-circuit Discharge (SCD), Undervoltage Operating current (typ) (µA) 4 Rating Catalog Vin (max) (V) 8 Overvoltage protection 4.425 Operating temperature range (°C) -40 to 85 Battery overvoltage protection (min) (V) 3.85 Battery overvoltage protection (max) (V) 4.6
Function Protection Number of series cells (min) 1 Number of series cells (max) 1 Features FET drive, Overcurrent during charge (OCC), Overcurrent during discharge (OCD), Overvoltage, Short-circuit Discharge (SCD), Undervoltage Operating current (typ) (µA) 4 Rating Catalog Vin (max) (V) 8 Overvoltage protection 4.425 Operating temperature range (°C) -40 to 85 Battery overvoltage protection (min) (V) 3.85 Battery overvoltage protection (max) (V) 4.6
WSON (DSE) 6 2.25 mm² 1.5 x 1.5
  • Input voltage range pack+: VSS – 0.3V to 12V
  • FET drive:
    • CHG and DSG FET drive output
  • Voltage sensing across external FETs for overcurrent protection (OCP) is within ±5mV (typical)
  • Fault detection
    • Overcharge detection (OVP)
    • Over-discharge detection (UVP)
    • Charge overcurrent detection (OCC)
    • Discharge overcurrent detection (OCD)
    • Load short-circuit detection (SCP)
  • Zero voltage charging for depleted battery
  • Factory programmed fault protection thresholds
    • Fault detection voltage thresholds
    • Fault trigger timers
    • Fault recovery timers
  • Modes of operation without battery charger enabled
    • NORMAL mode ICC = 4µA
    • Shutdown Iq = 100nA
  • Operating temperature range TA = –40°C to +85°C
  • Package:
    • 6-pin DSE (1.50mm × 1.50mm × 0.75mm)
  • Input voltage range pack+: VSS – 0.3V to 12V
  • FET drive:
    • CHG and DSG FET drive output
  • Voltage sensing across external FETs for overcurrent protection (OCP) is within ±5mV (typical)
  • Fault detection
    • Overcharge detection (OVP)
    • Over-discharge detection (UVP)
    • Charge overcurrent detection (OCC)
    • Discharge overcurrent detection (OCD)
    • Load short-circuit detection (SCP)
  • Zero voltage charging for depleted battery
  • Factory programmed fault protection thresholds
    • Fault detection voltage thresholds
    • Fault trigger timers
    • Fault recovery timers
  • Modes of operation without battery charger enabled
    • NORMAL mode ICC = 4µA
    • Shutdown Iq = 100nA
  • Operating temperature range TA = –40°C to +85°C
  • Package:
    • 6-pin DSE (1.50mm × 1.50mm × 0.75mm)

The BQ2970 battery cell protection device provides an accurate monitor and trigger threshold for overcurrent protection during high discharge/charge current operation or battery overcharge conditions.

The BQ2970 device provides the protection functions for Li-ion/Li-polymer cells, and monitors across the external power FETs for protection due to high charge or discharge currents. In addition, there is overcharge and depleted battery monitoring and protection. These features are implemented with low current consumption in NORMAL mode operation.

The BQ2970 battery cell protection device provides an accurate monitor and trigger threshold for overcurrent protection during high discharge/charge current operation or battery overcharge conditions.

The BQ2970 device provides the protection functions for Li-ion/Li-polymer cells, and monitors across the external power FETs for protection due to high charge or discharge currents. In addition, there is overcharge and depleted battery monitoring and protection. These features are implemented with low current consumption in NORMAL mode operation.
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Technical documentation

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* Data sheet BQ297xx Cost-Effective Voltage and Current Protection Integrated Circuit for Single-Cell Li-Ion and Li-Polymer Batteries datasheet (Rev. I) PDF | HTML 02 Aug 2024
Technical article Overcoming common design challenges in an UV sterilization box system PDF | HTML 27 Jul 2020
Technical article Accelerate your electric mask design PDF | HTML 01 Jul 2020
Technical article Get smart: How intelligent battery gauges improve battery life in continuous gluco PDF | HTML 19 Apr 2019
Technical article Battery-charging tips for video doorbell applications PDF | HTML 15 Apr 2019
Application brief Benefits of Battery Gauges and Protectors in Medical Applications PDF | HTML 02 Jul 2018
EVM User's guide bq29700 EVM User’s Guide 04 Mar 2014

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

BQ29700EVM-610 — Single Cell Battery Protection ICs Evaluation Module

The bq29700EVM is a complete evaluation system for the bq297xx family of single cell battery protection ICs. The EVM includes one bq29700-based circuit module.The bq29700-based circuit module is a complete and compact example solution of a bq29700 single cell battery protection IC. The circuit (...)

User guide: PDF
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WSON (DSE) 6 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

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