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.