Texas Instruments

BQ76PL455ATPFCTQ1

BQ76PL455ATPFCTQ1 Description

The BQ76PL455ATPFCTQ1 from Texas Instruments is a high-performance, automotive-grade battery management IC designed for monitoring and protecting lithium-ion battery packs with 6 to 16 cells. As part of the Functional Safety (FuSa) series, it meets stringent automotive reliability standards, making it ideal for electric vehicles (EVs), hybrid electric vehicles (HEVs), and energy storage systems. The device integrates over/under-voltage fault protection, ensuring safe operation under extreme conditions. Its UART interface enables seamless communication with host controllers, while its surface-mount 80TQFP package optimizes board space. Although marked as obsolete, it remains a robust solution for legacy designs requiring compliance with ROHS3 and REACH regulations.

BQ76PL455ATPFCTQ1 Features

• Cell Monitoring: Supports 6 to 16 series-connected cells with precision voltage measurement.
• Automotive Compliance: AEC-Q100 qualified for harsh environments, ensuring reliability in automotive applications.
• Fault Protection: Integrated over-voltage and under-voltage detection safeguards battery packs.
• Communication Interface: UART for efficient data exchange with microcontrollers or BMS hosts.
• Packaging: 80TQFP (Tape & Reel) for automated assembly, with MSL 3 (168 hours) moisture sensitivity.
• Functional Safety: Designed for ISO 26262 compliance, critical for automotive safety systems.

BQ76PL455ATPFCTQ1 Applications

• Electric Vehicles (EV/HEV/PHEV): Ensures reliable battery monitoring and protection in high-voltage traction systems.
• Grid Energy Storage: Manages large-scale battery arrays in renewable energy systems.
• Industrial UPS: Provides fault-tolerant monitoring for backup power solutions.
• Telecom Power Systems: Enhances safety in 48V battery backup units.

Conclusion of BQ76PL455ATPFCTQ1

The BQ76PL455ATPFCTQ1 stands out for its automotive-grade robustness, precise cell monitoring, and integrated safety features. While obsolete, its functional safety compliance and multi-cell support make it a preferred choice for legacy automotive and industrial designs. Engineers seeking a proven, high-reliability BMS IC for 6-16 cell systems will find this device exceptionally capable, despite its phase-out status. For new designs, TI's newer FuSa-compliant alternatives should be evaluated.