Overvoltage Protection For 2-Series and 3-Series Cell Li-Ion Batteries - BQ294533

BQ294533 (ACTIVE)

Overvoltage Protection For 2-Series and 3-Series Cell Li-Ion Batteries

 

Description

The bq2945xx family of products is a secondary-level voltage monitor and protector for Li-Ion battery pack systems. Each cell is monitored independently for an overvoltage condition. Based on the configuration, an output is triggered after a fixed delay if any of the two or three cells has an overvoltage condition. This output is triggered into a high state after an overvoltage condition satisfies the specified delay timer.

Features

  • 2-Series and 3-Series Cell Overvoltage Monitor for Secondary Protection
  • Fixed Programmable Delay Timer
  • Fixed OVP Threshold
    • Available Range From 3.85 V to 4.6 V
  • Fixed OVP Delay Option: 4 s or 6.5 s
  • High-Accuracy Overvoltage Protection:
    ±10 mV
  • Low Power Consumption ICC ≈ 1 µA
    (VCELL(ALL) < VPROTECT)
  • Low Leakage Current per Cell Input < 100 nA
  • Small Package Footprint
    • 6-Pin SON

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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
BQ294533
Protection   
2   
3   
No Communication   
Programmable EEPROM or EPROM
Over-voltage (OV)   
1   
Catalog   
25   
6WSON