These fuses safeguard Li-ion battery packs against overcurrent and overcharging (overvoltage) conditions - even when fast charging.
The latest addition, the ITV2718, has been designed to provide a five-amp, three-terminal fuse in a 2.7 x 1.8 mm footprint. The design utilises an embedded fuse and heater element combination to respond quickly, interrupting the battery pack’s charging or discharging circuit before overcharging or overheating conditions occur.
The ITV2718 Battery Protector is suited for a wide range of consumer electronics applications, including: game consoles; E-call, portable routers; portable modems; smartphones, notebooks and tablets
By extending its ITV line of li-ion battery pack protection fuses to include new five-amp-rated devices, Littelfuse said that it was looking to provide electronics engineers with more options for next-gen consumer electronics designs.
The ITV2718 offers a number of key benefits that include:
• Prevents overcurrent and overcharging battery pack damage via fast response time and low internal resistance.
• Surface-mount design simplifies automated printed circuit board (PCB) assembly.
• Meets industry safety requirements via UL and TUV certifications for faster compliance approval.
• Halogen-free and RoHS compliant environmentally friendly components.
The embedded three-terminal fuse cuts off the circuit immediately when an overcurrent condition occurs. The heater element, which is embedded directly under the fuse element, generates enough heat to blow the fuse once the IC or FET detects overcharging.
