1 Features
• VOPERATING = 4.5 V to 13.8 V, VABSMAX = 20 V
• Integrated 28-mΩ Pass MOSFET
• Fixed 15-V Over Voltage Clamp
• 1-A to 5-A Adjustable ILIMIT
• ±8% ILIMIT Accuracy at 3.7 A
• 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
• Adapter Powered Devices
• HDD and SSD Drives
• Set Top Boxes
• Servers / AUX Supplies
• Fan Control
• PCI/PCIe Cards

3 Description
The TPS25924x 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, voltage surges, excessive inrush
current, and reverse current.
Current limit level can be set with a single external
resistor. Over voltage events are limited by internal
clamping circuits to a safe fixed maximum, with no
external components required.
Applications with particular voltage ramp
requirements can set dV/dT 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 TPS25924x
output and the gate driven by BFET to prevent
current flow from load to source (see Figure 43).