Complete battery pack monitoring, balancing, and protection system
Discover our exclusive device and kit offers
Boost battery lifetime and safety in industrial and consumer applications
Boost battery lifetime and safety in industrial and consumer applications
By integrating a high-precision 12-bit ADC, the L9961 monitors individual cell voltages, stack voltage and cell temperature. A dedicated 16-bit high-accuracy current-sense amplifier (CSA) monitors battery stack current, enabling state-of-charge (SOC)/state-of-health (SOH) estimation via the internal Coulomb counter. Integrated MOSFETs allow balancing of individual cells, while advanced diagnostics and embedded fuse driver complete the comprehensive protection capabilities of the IC.
Cordless power tools
Small appliances
Medical appliances
Drones
Featured products with special offers
L9961: chip for industrial battery management applications up to 5 cells
Free samples with code EV-EW2025-L9961-03
STEVAL-L99615C: expansion kit with L9961 board and STM32G0 Nucleo-64 development board
Buy-1-Get-1-Free with code: EV-EW2025-BMS-EVAL03
Complete development support
Software GUI for L9961 evaluation board
Ready-to-use GUI showing L9961 device performance
- Cell monitoring
- Coulomb counter
- Switch control
- Diagnostics
Show More
Show Less
Software package for L9961 industrial BMS
Software package with standalone firmware driver and application examples
- Coulomb counting mechanism for SOC estimation
- 5-cell voltage, current, temperature and stack voltage monitoring
- Applications examples
- Passive battery cell balancing for cell energy equalization
Show More
Show Less