The eFuse Protection ICs utilize an innovative design that provides a wide range of power input (3.3 to 28 V) and integrated protection. In addition to overvoltage protection, these electronic fuses protect against overcurrent, short circuit, inrush current, reverse current, and overheating events with real-time diagnostics.

The eFuse circuit protectors are ideal for use in a wide range of consumer electronics and data communications interfaces, including Bluetooth headsets, wearable devices, tablet PCs, charging cables, battery devices, adapter-powered devices, networking, PCs/notebooks, datacom power systems, fan-power controls, HDD and SSD storage drives, and industry 12V/24 power input/output.

“The eFuse Protection ICs provide today’s electronics designers with significant flexibility by integrating robust circuit protection, sensing, and control in a single chip,” said Bernie Hsieh, assistant product manager of the Protection Semiconductor Business team at Littelfuse. “Providing a low power consumption, high-accuracy, current-limiting circuit with quick response time makes them a win-win-win for many portable electronics and datacom applications.”

The eFuse Protection ICs are available in the following series:

• LS0504EVT233 — 5-V, 4-A, overvoltage, overcurrent protection, SOT23-3 package 

• LS0505EVD22 — 5-V, 5-A, overvoltage, overcurrent protection, DFN2x2 package 

• LS1205ExD33 — 18-V, 5-A, programmable current limit, output voltage clamp, DFN3x3 package 

• LS2406ERQ23 — 28-V, 6-A, true reverse blocking, fast role swap, QFN2.5x3.2 package 

They’re available in tape and reel format in quantities of 3,000 (LS0504EVT23 and LS0505EVD22) or 5,000 (LS1205ExD33 and LS2406ERQ23).