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 an excellent choice 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 establish an 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 an 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 2mm × 2mm, 10-pin HotRod™ QFN package for improved thermal performance and reduced system footprint.
The devices are characterized for operation over a junction temperature range from –40°C to +125°C.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | TPS25947xx, 2.7V to 23V, 5.5A, 28mΩ True Reverse Current Blocking eFuse with Input Reverse Polarity Protection datasheet (Rev. C) | PDF | HTML | May 21, 2026 |
| Application note | How eFuse Ensures Integrated FET Operation in Safe Operating Area | PDF | HTML | Sep 7, 2022 | |
| Application brief | Using an eFuse to Meet IEC62368-3 for USB 2.0 and USB 3.1 Power Sourcing Ports | PDF | HTML | Feb 7, 2022 | |
| Certificate | TPS25947x UL2367 Certificate of Compliance E169910 | Jan 19, 2022 | ||
| Certificate | TPS25947x UL2367 Certificate of Compliance E339631 | Jan 18, 2022 | ||
| Certificate | TPS25947x CB Test Certificate IEC 62368-1 | Dec 8, 2021 | ||
| Application note | Basics of Power MUX (Rev. A) | PDF | HTML | Oct 20, 2020 | |
| Application brief | Fast Role Swap, Linear ORing with TPS25947 and LM73100 in USB-Type C Systems (Rev. A) | PDF | HTML | Oct 7, 2020 | |
| Application brief | eFuses in Smart Electricity Meters | PDF | HTML | Sep 1, 2020 |
For additional terms or required resources, click any title below to view the detail page where available.
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| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| VQFN-HR (RPW) | 10 | Ultra Librarian |
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