TI BQ771815DPJR

The BQ7718xy series provides overvoltage monitors and protectors for lithium-ion battery pack systems. Each cell is independently monitored for overvoltage conditions. To enable faster production line testing, BQ7718xy devices offer a Customer Test Mode (CTM) with significantly reduced delay times. In BQ7718xy devices, when an overvoltage condition is detected on any cell, an internal delay timer is initiated. Upon delay timer expiration, the output is triggered to its active state (high or low, depending on configuration).

• Overvoltage protection for 2, 3, 4, and 5 series-connected cells
• Internal delay timer
• Fixed OVP threshold
• High-accuracy overvoltage protection: ±10mV
• Low quiescent current ICC ≈ 1μA (VCELL(ALL) < VPROJECT)
• Low leakage current < 100nA per cell input
• Functional safety support
• Documentation to assist functional safety system design
• Package options:
  • Small 8-pin QFN (3.00mm × 4.00mm) package
  • 8-pin MSOP with leads (3.00mm × 5.00mm, with leads)

• Lithium-ion battery pack protection
• Handheld gardening tools
• Handheld power tools
• Cordless vacuum cleaners
• UPS backup batteries
• Light electric vehicles (e-bikes, electric scooters, pedal-assist bicycles)