BQ2969T Overvoltage and Overtemperature Protection for 2-Series, 3-Series, and 4-Series Cell Li-Ion Batteries with LDO Output and Control / PTC Input
- SLUSFQ8 December 2024 BQ2969T
  
  PRODUCTION DATA

Data Sheet

BQ2969T Overvoltage and Overtemperature Protection for 2-Series, 3-Series, and 4-Series Cell Li-Ion Batteries with LDO Output and Control / PTC Input

1 Features

2-series, 3-series, and 4-series cell overvoltage protection (OVP)
Factory programmed OVP threshold (3.6V to 5.2V) with ±12mV accuracy
Fixed delay timer to trigger FET drive output
(0.25s to 6.5s options)
Control input pin, which can implement cell overtemperature protection (OT) using external PTC thermistor
Integrated 3mA regulated output programmable to 3.8V, 3.3V, 3.15V, 3.0V, 2.5V, 1.8V, or 1.5V
Factory programmed undervoltage (UV) detection threshold (1V to 4.15V) to disable regulator
- OVP and OT remains operational even in undervoltage condition
Output pin options:
- Active high
- Open-drain - active pulldown
- Open-drain - inactive pulldown
Multiple power modes:
- NORMAL mode - no OV or UV: I_CC ≅ 1.23µA
- Undervoltage or disable mode - UV detected or control input low: I_CC ≅ 0.25µA
- Overvoltage mode - OV detected: I_CC ≅ 15µA
Low leakage current per cell input < 100nA
Small package footprint
- 8-Pin WSON (2mm × 2mm)