LTC3300ILXE-1#PBF

LTC3300-1 is a fault-protected controller IC for transformer-based bidirectional active balancing of multicell 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. Each device can balance upto 6 series-connected battery cells with an input common mode voltage up to 36V. Charge from any selected cell can be transferred at high efficiency to or from 12 or more adjacent cells. A unique level-shifting SPI-compatible serial interface enables multiple LTC3300-1 devices to be connected in series, without opto-couplers or isolators, allowing for balancing of every cell in a long string of series-connected batteries. It is widely used in applications such as electric vehicles/plug-in HEVs, high power UPS/Grid energy storage systems, general purpose multicell battery stacks etc.

• Bidirectional synchronous flyback balancing of upto 6 Li-Ion or LiFePO4 cells in series
• Upto 10A balancing current (set by externals)
• Bidirectional architecture minimizes balancing time and power dissipation
• Upto 92% charge transfer efficiency
• Stackable architecture enables <gt/>1000V systems
• Uses simple 2-winding transformers
• 1MHz daisy-chainable serial interface with 4bit CRC packet error checking
• High noise margin serial communication, numerous fault protection features
• Operating temperature is -40°C to 125°C
• Package style is 48-lead plastic eLQFP

Note

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party