The STMicroelectronics L9963E-TR is an advanced battery management system IC designed to measure and monitor 4 to 14 cells in series with exceptional precision, making it ideal for automotive and energy storage applications. Featuring a high-resolution 16-bit voltage ADC with a maximum error of ±2 mV, it operates reliably across a wide temperature range of [-40°C to +105°C], ensuring consistent performance even in harsh environments. The integrated coulomb counter supports overcurrent detection in both active and standby states while synchronizing current and voltage samples for highly accurate monitoring. With robust communication capabilities through a 2.66 Mbps isolated serial interface, the device efficiently manages multi-device chains, enabling fast data acquisition for systems handling up to 434 cells. Additionally, the passive internal balancing currents of 200 mA and comprehensive balancing options contribute to optimized battery performance and health.
Engineered for safety and reliability, the L9963E-TR features fully redundant measurement paths, intelligent diagnostic routines, and compliance with ISO26262 for ASIL-D systems, making it a trusted choice for applications requiring high safety standards. It supports a variety of use cases, including 48 V and high-voltage automotive battery packs, backup energy storage systems, e-bikes, and portable equipment. Additional functionalities include up to 9 GPIOs with NTC sensing capability, hot-plug robustness, and dual 5 V regulators for external loads, providing flexibility for diverse applications. Nantian Electronics offers a comprehensive stock of this component along with technical documentation and competitive pricing. Feel free to reach out for inquiries or to learn more about its features and applications.
