28m

:

VIN

OUT

EN/UVLO

dV/dT

GND

BFET

TPS25924x

ILIM

RLIM

VIN

OUT

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TPS259240, TPS259241

SLVSCU9A – AUGUST 2015 – REVISED AUGUST 2015

TPS25924x 12-V eFuse with Over Voltage Protection and Blocking FET Control

1 Features

3 Description

The TPS25924x family of eFuses is a highly

1

•

integrated circuit protection and power management

•

Integrated 28-m

Ω Pass MOSFET

solution in a tiny package. The devices use few

•

Fixed 15-V Over Voltage Clamp

external components and provide multiple protection

modes. They are a robust defense against overloads,

•

shorts circuits, voltage surges, excessive inrush

•

current, and reverse current.

•

Reverse Current Blocking Support

Current limit level can be set with a single external

•

Programmable OUT Slew Rate, UVLO

resistor. Over voltage events are limited by internal

•

Built-in Thermal Shutdown

clamping circuits to a safe fixed maximum, with no

external components required.

•

UL 2367 Recognition Pending

•

Safe During Single Point Failure Test (UL60950)

Applications

with

particular

voltage

ramp

requirements can set dV/dT with a single capacitor to

•

Small Foot Print – 10L (3 mm x 3 mm) VSON

ensure proper output ramp rates. Many systems,

such as SSDs, must not allow holdup capacitance

2 Applications

energy to dump back through the FET body diode

•

Adapter Powered Devices

onto a drooping or shorted input bus. The BFET pin

is for such systems. An external NFET can be

•

HDD and SSD Drives

connected “Back to Back (B2B)” with the TPS25924x

•

Set Top Boxes

output and the gate driven by BFET to prevent

•

Servers / AUX Supplies

current flow from load to source (see Figure 43).

•

Fan Control

Device Information(1)

•

PCI/PCIe Cards

PART NUMBER

PACKAGE

BODY SIZE (NOM)

TPS259241

VSON (10)

3.00 mm × 3.00 mm

TPS259240

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Application Schematic

Transient: Output Short Circuit

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.