Battery protectors prevent overcurrents and overcharging damage

11-05-2022 | Littelfuse | Passives

Littelfuse, Inc. offers the new ITV4030, a series of 22A, three-terminal, surface-mountable Li-ion battery protectors.


These 4mm x 3mm devices protect battery packs against overcurrent and overcharging conditions. The innovative design employs embedded fuse and heater elements that deliver fast response and reliable performance to interrupt the charging or discharging circuit before the battery pack becomes overcharged or overheated.


The device works by an embedded three-terminal fuse that cuts off the circuit when overcurrent issues occur. A heater element, directly embedded under the fuse element, induces enough heat to blow the fuse once overcharging is detected by IC or FET.


The device is excellent for usage in a wide range of data communications interfaces for consumer electronics, including tablets, robotic appliances, power tools, e-bikes and e-scooters, and emergency radios and eCall.


“The ITV4030 is a 22A rated device, which extends our ITV line of li-ion battery protectors to provide more options for electronics designers,” said Stephen Li, global product manager at Littelfuse. “Expanding our portfolio of three-terminal surface-mountable battery pack protectors enables us to provide these innovative solutions to a broader range of applications.”


The device offers key benefits that include surface-mountable design simplifying automated PC board assembly processes; certifications from UL and TUV aid in securing approvals with satisfying industry compliance needs. The environmentally friendly component is halogen-free and RoHS compliant.

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