1 Features

• Input operating voltage range: 4.5 V to 16 V

– Absolute maximum: 20 V

– Withstands negative voltages up to –1 V at

output

• Integrated FET with ultra-low on-resistance: 0.8

mΩ (typical)

• Rated for RMS current of 55 A and peak current of

70 A

• Supports parallel connection of multiple eFuses for

higher current support

– Active device state synchronization and load

sharing during start-up and steady-state

• Robust overcurrent protection

– Adjustable overcurrent threshold (IOCP): 10 A to

55 A with accuracy of ±5

– Circuit-breaker response during steady state

operation with adjustable transient overcurrent

timer (ITIMER) to support peak currents up to 2

× IOCP

– Adjustable active current limit during start-up

(ILIM)

• Robust short-circuit protection

– Fast-trip response (< 200 ns) to output shortcircuit

events

– Adjustable threshold (2 × IOCP)

– Immune to supply line transients — no

nuisance tripping

• Precise analog load current monitoring

– Accuracy: ±1.4

– Bandwidth: > 500 kHz

• Fast overvoltage protection (fixed 16.7-V

threshold)

• Adjustable output slew rate control (dVdt) for

inrush current protection

• Active high enable input with adjustable

undervoltage lockout (UVLO)

• Overtemperature Protection (OTP) to ensure FET

SOA

– Guaranteed FET SOA: 10 W√s

• Integrated FET health monitoring and reporting

• Analog die temperature monitor output (TEMP)

• Dedicated fault indication pin (FLT)

• Power-Good indication pin (PG)

• Small footprint: QFN 5 mm × 5 mm

• 100 Pb free

2 Applications

• Input hotswap and hotplug

• Server and high performance computing

• Network interface cards

• Graphics and Hardware accelerator cards

• Data center switches and routers

• Fan trays

3 Description

The TPS25984x is an integrated, high-current circuit

protection and power management solution in a small

package. The device provides multiple protection

modes using very few external components and is a

robust defense against overloads, short circuits, and

excessive inrush current.

Applications with particular inrush current

requirements can set the output slew rate with a

single external capacitor. Output current limit level

can be set by user as per system needs. A user

adjustable overcurrent blanking timer allows systems

to support transient peaks in the load current without

tripping the eFuse.