1 Features
• Wide input voltage range: 2.7 V to 26 V
– 30-V absolute maximum
• Low on-resistance: RON = 2.7-mΩ typical
• Adjustable current limit threshold
– Range: 2 A to 18 A
– Accuracy: ±8% (typical for ILIM > 5 A)
• Circuit breaker and current limiter options
• Adjustable overcurrent blanking timer
– Handles load transients without tripping
• Accurate current monitor output
– ±1.5% (typical at 25°C for IOUT > 3 A)
– ±3% (maximum for IOUT > 3 A)
• User configurable fault response
– Latch-off or auto-retry
– Number of retries (finite or indefinite)
– Delay between retries
• Robust short-circuit protection
– Fast-trip response time < 400-ns typical
– Immune to line transients – no nuisance
tripping
• Adjustable output slew rate (dVdt) control
• Option to drive external FET for reverse current
blocking in disabled/OFF state
• Adjustable undervoltage lockout
• Adjustable overvoltage lockout
• Integrated overtemperature protection
• Power good indication
• Small footprint: 4-mm × 4-mm QFN package

2 Applications
• Hot-swap, hot-plug
• Power multiplexing
• Server standby rail, PCIe riser, add-on card, and
fan module protection
• Router and switch optical module protection
• Industrial PC
• Cordless power tool charger

3 Description
The TPS25983 family of eFuses is a highly-integrated
circuit protection and power management device in
a small package. The devices are operational over
a wide input voltage range. A single part caters
to low-voltage systems needing minimal I*R voltage
drop as well as higher voltage, high current systems
needing low power dissipation. The TPS25983 family
is a robust defense against overloads, short-circuits,
voltage surges, reverse current, and excessive inrush
current.
Overvoltage events are limited by internal cutoff
circuits with user adjustable overvoltage threshold.
Multiple device options exist to choose between the
response to overcurrent conditions, circuit breaker, or
active current limiter. The overcurrent limit threshold
can be set with a single external resistor. The devices
intelligently manage the overcurrent response by
distinguishing between transient events and actual
faults, thereby allowing the system to function
uninterrupted during line and load transients without
compromising on the robustness of the protection
against faults. The device can be configured to
stay latched-off or retry automatically after a fault
shutdown. The number of auto-retries as well as
the retry delay are configurable with capacitors. This
feature enables remote systems to automatically
recover from temporary faults while making sure that
the power supplies are not stressed indefinitely due to
a persistent fault.
The devices provide an option to drive an external
N-FET connected in series to facilitate reverse current
blocking in disabled or OFF state.
Also, the devices integrate an accurate analog
load current monitor to provide enhanced system
monitoring and diagnostic capabilities.
The TPS25983 devices are available in a small, 4 mm
× 4 mm QFN package. The devices are characterized
for operation over a junction temperature range of
–40°C to 125°C.