Integrated back-to-back FETs with low On-Resistance: RON = 28.3 mΩ (typ)
Ideal diode operation with true reverse current blocking
Fast overvoltage protection
Overvoltage clamp (OVC) with pin-selectable threshold (3.8 V, 5.7 V, 13.8 V) and 5-µs (typ) response time OR
Adjustable overvoltage lockout (OVLO) with 1.2-µs (typ) response time
Overcurrent protection with load current monitor output (ILM)
Active current limit OR circuit-breaker options
Adjustable threshold (ILIM) 0.5 A - 6 A
±10% accuracy for ILIM > 1 A
Adjustable transient blanking timer (ITIMER) to allow peak currents up to 2 x ILIM
Output load current monitor accuracy: ±6% (IOUT ≥ 1 A)
Fast-trip response for short-circuit protection
500-ns (typ) response time
Adjustable (2 x ILIM) and fixed thresholds
Active high enable input with adjustable undervoltage lockout threshold (UVLO)
Adjustable output slew rate control (dVdt)
Priority power MUX control (AUXOFF) and Fault indication (FLT) OR
Power Good indication (PG) with adjustable threshold (PGTH)
UL 2367 recognition (pending)
IEC 62368 CB certification (pending)
Small footprint: QFN 2 mm x 2 mm, 0.45-mm pitch
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Description for the TPS25947
The TPS25947xx family of eFuses is a highly integrated circuit protection and power management solution in a small package. The devices provide multiple protection modes using very few external components and are a robust defense against overloads, short-circuits, voltage surges, reverse polarity and excessive inrush current. With integrated back-to-back FETs, reverse current flow from output to input is blocked at all times, making the devices well suited for power MUX/ORing applications as well as systems which need load side energy hold up storage in case input power supply fails. The devices use linear ORing based scheme to ensure almost zero DC reverse current and emulate ideal diode behavior with minimum forward voltage drop and power dissipation.
Output slew rate and inrush current can be adjusted using a single external capacitor. Loads are protected from input overvoltage conditions either by clamping the output to a safe fixed maximum voltage (pin selectable), or by cutting off the output if input exceeds an adjustable overvoltage threshold. The devices respond to output overload by actively limiting the current or breaking the circuit. The output current limit threshold as well as the transient overcurrent blanking timer are user adjustable. The current limit control pin also functions as an analog load current monitor.
The devices are available in a 2-mm x 2-mm, 10-pin HotRod QFN package for improved thermal performance and reduced system footprint.
The devices are characterized for operation over a junction temperature range of –40°C to +125°C.
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is a continuous length of cut tape from one reel to maintain lot- and date-code traceability, built to the exact quantity requested. Following industry standards, a brass shim connects an 18-inch leader and trailer on both sides of the cut tape for direct feeding into automated assembly machines. TI includes a reeling fee for custom reel orders.
Cut tape is a length of tape cut from a reel. TI may fulfill orders using multiple strips of cut tapes or boxes to satisfy the quantity requested.TI often ships
devices inside a box or in the tube or tray, depending on inventory availability. We pack all tapes, tubes or sample boxes according to internal electrostatic discharge and moisture-sensitivity-level protection requirements.
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