LTC3300HUK-2 48-Lead QFN Addressable Bidirectional Multicell Battery Balancer
The LTC3300HUK-2 is a fault protected controller for transformer based bidirectional active balancing of multicell battery stacks. Gate drive, precision current sensing, fault detection and a serial interface with a watchdog timer are all integrated, so the balancer is a controller plus a small transformer and a few external parts per cell.
Each device balances up to six series connected cells with an input common mode voltage up to 36 V, and charge from any selected cell can be transferred at high efficiency to or from twelve or more adjacent cells. Because energy moves between cells rather than being burned in a resistor, balancing loss stays low and the pack stays cooler.
Every device has an individually addressable serial interface, so up to 32 controllers can sit on one bus under a single processor, which scales to a stack of nearly 200 cells without extra isolation. A CRC protected interface and a watchdog timer guard against a wiring fault or a stuck host.
Fault protection covers open cell connections, shorted cells and a lost serial link, and the controller reports these conditions rather than silently heating a cell. The device is available in a 48-lead 7 mm by 7 mm QFN or eLQFP with exposed pad, with high temperature versions specified to 150 degrees C for automotive and industrial packs.
The LTC3300HUK-2 is specified from -40 to 150 degrees C. It is RoHS compliant and lead free, every order ships with full traceability, and samples and volume pricing are available on request.
Company Profile
Shenzhen Mingjiada Electronics Co., Ltd. is an independent distributor of electronic components from established manufacturers. Founded in Shenzhen in 1996, Mingjiada has established branches in Hong Kong, Japan, Russia, and Taiwan.
Certified under ISO9001:2014 for quality management systems and ISO14001:2014 for environmental management systems. With an experienced team in sales, R&D and management, we specialize in distributing products from more than 500 established suppliers.
Adhering to the principle of "maximizing benefits for customers," we offer comprehensive product ranges and provide high-quality, responsive service through professional logistics and customer service teams.
Frequently Asked Questions
Are your products new stock?
Yes. Every part we ship is new stock sourced through established supply channels, with full traceability.
Which package does the LTC3300HUK-2 use?
It is supplied in the 48-Lead (7mm x 7mm) QFN package and specified from -40 to 150 degrees C.
How many cells does the LTC3300HUK-2 balance?
Up to six series connected cells per device, with an input common mode voltage up to 36 V.
How is energy moved between cells?
Through a transformer based bidirectional path, so charge from one cell can be transferred to or from twelve or more adjacent cells.
Can several devices be combined?
Yes. Each device is individually addressable and up to 32 can share one serial bus under a single processor.
What faults are detected?
Open cell connections, shorted cells and interface errors, with a CRC protected interface and a watchdog timer.
Which packages are available?
A 48-lead 7 mm by 7 mm QFN or eLQFP with exposed pad, with high temperature versions to 150 degrees C.
How do you ship my order? Is it safe?
We use express carriers including DHL, FedEx, UPS, TNT, and EMS. We can also use your preferred forwarder. Products are carefully packaged to ensure safety, and we take responsibility for any damage to your order.
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