DESCRIPTION

The LTC® 3300-2 is a fault-protected controller IC for transformer-based bidirectional active balancing of multi cell battery stacks. All associated gate drive circuitry, precision current sensing, fault detection circuitry and a robust serial interface with built-in watchdog timer are integrated.

FEATURES

Bidirectional Synchronous Flyback Balancing
of Up to 6 Li-Ion or LiFePO₄ Cells in Series
Up to 10A Balancing Current (Set by Externals)
Integrates Seamlessly with the LTC680x Family of Multicell Battery Stack Monitors
Bidirectional Architecture Minimizes Balancing Time and Power Dissipation
Up to 92% Charge Transfer Efficiency
Stackable Architecture Enables >800V Systems
Uses Simple 2-Winding Transformers
1MHz Serial Interface with 4-Bit CRC Packet Error Checking
Individually Addressable with 5-Bit Address
Numerous Fault Protection Features
48-Lead Exposed Pad QFN and LQFP Packages

APPLICATIONS

Electric Vehicles/Plug-in HEVs
High Power UPS/Grid Energy Storage Systems
General Purpose Multicell Battery Stacks