Li-Ion/Li Polymer Advanced Single-Cell Battery Protector IC Family - BQ2970

BQ2970 (ACTIVE)

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

 

Special note

The bq2970 is a family of single-cell (1S) advanced battery protectors with various spin versions that differ in thresholds and delay timers, so please refer to the datasheet for a list of the spin versions or look at the table below.

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.

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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Parametrics Compare all products in Battery Monitor, Protection & Authentication Solutions

 
Function
Number of Series Cells (Min)
Number of Series Cells (Max)
Communication Interface
Features
Typical Operating Current (Typ) (uA)
Rating
Vin (Max) (V)
Pin/Package
BQ2970 BQ2980
Protection    Protection   
1     
1     
No Communication    No Communication   
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)   
Analog current sense
High-Side NCH CHG/DSG FET Drive
Programmable EEPROM or EPROM
Temperature sense
Over-current in Charge (OCC)
Over-current in Discharge (OCD)   
4    5   
Catalog    Catalog   
8    5.5   
6WSON    8X2QFN