1 Features
1• 4.5-V to 18-V Protection
• Integrated 28-mΩ Pass MOSFET
• Absolute Maximum Voltage of 20 V
• 1-A to 5-A Adjustable ILIMIT
• ±8% ILIMIT Accuracy at 3.7A
• Reverse Current Blocking Support
• Programmable OUT Slew Rate, UVLO
• Built-in Thermal Shutdown
• UL 2367 Recognized – File No. E339631*
– *RILIM ≤ 130 kΩ (5 A maximum)
• Safe During Single Point Failure Test (UL60950)
• Small Foot Print – 10L (3 mm x 3 mm) VSON

2 Applications
• HDD and SSD Drives
• Set Top Boxes
• Servers / AUX Supplies
• Fan Control
• PCI/PCIe Cards
• Adapter Powered Devices

3 Description
The TPS25927x family of eFuses is a highly
integrated circuit protection and power management
solution in a tiny package. The devices use few
external components and provide multiple protection
modes. They are a robust defense against overloads,
shorts circuits, excessive inrush current, and reverse
current.
Current limit level can be set with a single external
resistor. Applications with particular voltage ramp
requirements can set dV/dT pin with a single
capacitor to ensure proper output ramp rates.
Many systems, such as SSDs, must not allow holdup
capacitance energy to dump back through the FET
body diode onto a drooping or shorted input bus. The
BFET pin is for such systems. An external NFET can
be connected “Back to Back (B2B)” with the
TPS25927x output and the gate driven by BFET to
prevent current flow from load to source.