Littelfuse LS12052BD33 eFuse with Overvoltage Protection

Littelfuse LS12052BD33 eFuse with Overvoltage Protection is an 18V 5A integrated load switch that uses few external components and offers multiple protection modes. The LS12052BD33 provides a robust defense against overload, short circuit, input voltage surge, excessive inrush current, and reverse current blocking with an external NFET. The low 25mΩ RDS(ON) helps reduce power loss during typical operation, and the current limit level can be set with a lone external resistor. Littelfuse LS12052BD33 eFuse features a fixed overvoltage 14.4V output voltage clamp and a wide 2.7V to 18V input voltage range in a small 3mm x 3mm 10-lead DFN package. Applications include hard-disk drives (HDDs) and solid-state drives (SSDs), adapter-powered devices, notebook PCs, PCI and PCIe cards, and industrial.

Features

  • Wide 2.7V to 18V input voltage range
  • Low 25mΩ RDS(ON) for the integrated protection switch
  • External programmable soft-start time
  • External programmable current limit
  • Supports reverse current blocking
  • Short-circuit protection
  • Fixed overvoltage 14.4V output voltage clamp
  • Accurate 1.29V EN pin turn-on threshold
  • Thermal shutdown protection and auto-recovery
  • 3mm x 3mm 10-lead DFN package
  • Lead free and RoHS compliant

Applications

  • HDDs and SSDs
  • Adapter-powered devices
  • Notebook PCs
  • PCI and PCIe cards
  • Industrial

Typical Application

Littelfuse LS12052BD33 eFuse with Overvoltage Protection

Functional Block Diagram

Littelfuse LS12052BD33 eFuse with Overvoltage Protection

Pinout Designation

Littelfuse LS12052BD33 eFuse with Overvoltage Protection

Littelfuse LS12052BD33 eFuse with Overvoltage Protection