Li-ion battery protectors to guard against overcurrent

The innovative design provides fast response and reliable performance to interrupt the charging or discharging circuit before the battery pack becomes overcharged or overheated. Available in five compact, surface-mount packages, the Littelfuse ITV Series product line is available in current ratings of 12A, 15A, 30A and 45A.

“The ITV Series is an important addition to our li-ion battery protection portfolio, helping solve customer applications requiring current ratings from 12A to 45A,” said Stephen Li, Global Product Manager at Littelfuse.“Here’s how it works: An embedded fuse element cuts off the circuit when overcurrent issues occur. A heater element, directly embedded under the fuse element, generates enough heat to blow the fuse once overcharging is detected by IC or FET.”

This combination of robust overcurrent / overvoltage protection and surface mountable packaging is recommended for li-ion battery packs used in:

• Power tools
• Robotic appliances
• E-bikes and e-scooters
• Uninterruptable Power Supplies (UPS)
• Emergency radio and eCall

The Littelfuse ITV Series of battery protectors include these benefits:

• Innovative three-terminal fuse design protects against damage from both overcurrent and overcharging.
• Surface mountable form factor improves assembly efficiency.
• Low internal resistance minimises power loss.
• UL and TUV certifications aid compliance with industry standards.
• Environmentally friendly component is both ROHS compliant and halogen-free.

The ITV Series surface mount battery protectors are available in tape and reel format in quantities of 3,000. Sample requests may be placed through authorised Littelfuse distributors worldwide.