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).