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Product details

Parameters

Function Protection Number of series cells (Min) 1 Number of series cells (Max) 1 Communication interface No Communication Features Low-Side NCH CHG/DSG FET Drive, Programmable EEPROM or EPROM, Over-current in Charge (OCC), Over-current in Discharge (OCD), Over-voltage (OV), Short-circuit Discharge (SCD), Under-voltage (UV) Typical operating current (Typ) (uA) 4 Rating Catalog Vin (Max) (V) 8 open-in-new Find other Battery protectors

Package | Pins | Size

WSON (DSE) 6 2 mm² 1.5 x 1.5 open-in-new Find other Battery protectors

Features

  • Input voltage range pack+: VSS – 0.3 V to 12 V
  • FET drive:
    • CHG and DSG FET drive output
  • Voltage sensing across external FETs for overcurrent protection (OCP) is within ±5 mV (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 = 4 µA
    • Shutdown Iq = 100 nA
  • Operating temperature range TA = –40°C to +85°C
  • Package:
    • 6-pin DSE (1.50 mm × 1.50 mm × 0.75 mm)

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Description

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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Download

Technical documentation

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Type Title Date
* Datasheet BQ297xx Cost-Effective Voltage and Current Protection Integrated Circuit for Single-Cell Li-Ion and Li-Polymer Batteries datasheet (Rev. G) Jan. 16, 2020

Design & development

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

Hardware development

EVALUATION BOARDS Download
$49.00
Description

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 (...)

Features
  • Populated circuit module for quick setup and evaluation.

CAD/CAE symbols

Package Pins Download
WSON (DSE) 6 View options

Ordering & quality

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