1 Features

1• 2.5-V to 18-V Operation

• Accurate Current Limiting for Startup

• Programmable FET SOA Protection

• Adjustable Current Sense Threshold

• Programmable Fault Timer

• Power-Good Output

• Fast Breaker for Short-Circuit Protection

• Analog Load-Current Monitor Output

• Programmable UV and OV

• Low-current Standby Mode

• FET Fault Detection Flag

• 3-mm × 3-mm, 16-Pin QFN package

2 Applications

• Server Backplanes

• Storage Area Networks (SAN)

• Telecommunications Mezzanine Cards

• Medical Systems

• Plug-In Modules

• Base Stations

3 Description

The TPS24720 is an easy-to-use, full-featured

protection device for 2.5-V to 18-V power rails. This

hot-swap controller drives an external N-channel

MOSFET, while protecting source, load and external

MOSFET against multiple potentially damaging

events. During startup, load current and MOSFET

power dissipation are limited to user-selected values.

After startup, currents above the user-selected limit

will be allowed to flow until programmed timeout –

except in extreme overload events when load is

immediately disconnected from source.

Programmable power limiting ensures the external

MOSFET operates inside its safe operating area

(SOA) at all times. This allows use of smaller FETs

while improving system reliability. Power good, Fault,

FET Fault, and current monitor outputs are provided

for system status monitoring and downstream load

control.