Saturday, July 13, 2024

Programmable Silicon Based e-Fuse for Diverse and Demanding Applications

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e-Fuse provides single-chip protection, control, and sensing features ideal for 5V-28V applications.

The eFuse is suitable for use in various applications including portable electronics, wearables, enterprise servers, power tools, etc.

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Littelfuse has released a range of single-chip, e-Fuse Protection IC for 5v – 28V applications. The e-Fuse provides faster response time, highly accurate current limiting, and more integrated protection, control, and sensing features than traditional fuses and PTCs, therefore, it can enhance the safety of the system while reducing the cost and size of the device. The e-fuse can reduce the design-in phase, printed circuit board (PCB) space requirements, BOM cost, and time-to-market compared to typical discrete solutions. The highly integrated silicon-based fuse comes with various safety features, and real-time diagnostics and provides adjustability, flexibility, and reliable protection features in highly compact form factors that save PC board space. The eFuse is suitable for use in various applications including portable electronics, wearables, enterprise servers, power tools, etc.

“The expanded eFuse Protection ICs product line delivers clear performance advantages for electronics designers,” said Bernie Hsieh, Assistant Product Manager of the Protection Semiconductor Business team at Littelfuse. “Compared to traditional fuse, PTCs, power switches, and discrete solutions like Schottky diode and MOSFET combinations, the eFuses provide exceptional integration, adjustability, flexibility, and reliable protection features in highly compact form factors that save PC board space.”

The eFuse Protection ICs can be employed in a wide range of power inputs (3.3V to 28V) with highly integrated protection. These semiconductor-based electronic fuses offer various safety features such as overvoltage, overcurrent, short circuit, and inrush current protection. Moreover, these e-fuses also feature reverse current blocking, under voltage lockout (UVLO), soft start, and overtemperature protection with real-time diagnostics. The eFuse protection ICs are suitable for use in a wide range of electronic designs running at 5V, 12V and 24-28V. The e-fuse also improves product reliability and increases battery life while lowering repair costs, and increasing overall product lifetime.

The e-fuse protection IC series includes the below-mentioned models:

• LS0504EDD12 – 5V, 4A, low Ron power distribution load switch, DFN1.2×1.6 package
• LS12052BD33 – 18V, 5A, overvoltage and blocking FET control, DFN2x2 package
• LS2405IDD23 – 24V, 5A, very low forward voltage diode, low profile 8 lead DFN 2×3 package
• LS24062RQ23 – 28V, 6A, bidirectional, dual port independent current limit setting, 16 lead QFN 2.5×3.2 package

Littelfuse is a Chicago, Illinois, United States-based industrial technology manufacturing company. Littelfuse develops safety products such as fuse and e-fuse for a wide variety of markets including industrial, transportation, and electronics markets.


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