The TPS25982 family of eFuses is a highly integrated circuit protection and power
management solution 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. They are a robust defense
against overloads, short-circuits, voltage surges and excessive inrush current.
Overvoltage events are limited by internal cutoff circuits, with multiple device options
to choose the overvoltage threshold.
Multiple device options exist to choose between the response to overcurrent conditions,
circuit breaker or active current limiter. The overcurrent limit and fast-trip (short-circuit)
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 enables remote systems to automatically recover from
temporary faults while ensuring that power supplies are not stressed indefinitely due to a
The TPS25982 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.