The new TPS25946 from Texas Instruments is an input-power protection e-fuse with bi-directional current support in a small package. It offers a highly integrated circuit protection and power management solution in one device.
This e-fuse has an input voltage range of 2,7 to 23 V and an adjustable current limit with a range of 5,5 A. The back-to-back FET design has a low on-resistance of only 28 mΩ and a fast overvoltage protection with 1,2 µs response time. The fast trip response for short-circuit protection takes place at a typical 500 ns response time.
The device can withstand a junction temperature range of -40 to 125°C and also provides for over-temperature protection in a QFN housing measuring just 2 x 2 mm with a 0,45 mm pitch. The TPS25946 offers robust protection against voltage surges, short-circuits and in-rush current ideal for PC/Notebook applications.
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