USB Power Switches

USB power switches are power management devices used to charge electronic devices on USB ports and hubs on computers, docking stations, handheld devices and automotive devices. 


How do USB power switches work?

They work by monitoring the current on a device and latch a switch off if the output current is shorted. They often have an auto reset feature which reactivates the switch once the short circuit is removed. They work in the same way as hot swap controllers, which allow circuit boards and electronic cards to be inserted into equipment, removing the need to power down during use.


Features of USB power switches

Most USB power switches have multiple safety features. For instance, built in thermal-overload protection limits junction temperature and dissipation of power. 


The internal circuity is limited to an accurate figure to protect the input supply against short circuit conditions as well as overload. They're also fitted with fault signals that notify the microprocessor whenever there's a current-limit, under voltage lockout (UVLO), short-circuit fault or thermal overload.


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Viewing 1 - 20 of 24 products
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Description Price Switch Type Number of Outputs Switch On Resistance Maximum Power Dissipation Mounting Type Package Type Pin Count Current Limit Dimensions Length Width Height Maximum Input Voltage Maximum Operating Temperature
RS stock no. 670-9999
Mfr. Part No.FSUSB30MUX
R 9.05
Each (In a Pack of 5)
units
- 1 10Ω - Surface Mount MSOP 10 - 3 x 3 x 1.1mm 3mm 3mm 1.1mm - +85 °C
RS stock no. 166-2527
Mfr. Part No.FSUSB30MUX
R 3.62
Each (On a Reel of 4000)
units
- 1 10Ω - Surface Mount MSOP 10 - 3 x 3 x 1.1mm 3mm 3mm 1.1mm - +85 °C
RS stock no. 166-2089
Mfr. Part No.FAN3989MLP8X
R 7.42
Each (On a Reel of 3000)
units
- 1 - - Surface Mount MLP 8 1.5A 3 x 3 x 0.75mm 3mm 3mm 0.75mm 20 V +85 °C
RS stock no. 809-4996
Mfr. Part No.FAN3989MLP8X
R 17.156
Each (On a Tape of 5)
units
- 1 - - Surface Mount MLP 8 1.5A 3 x 3 x 0.75mm 3mm 3mm 0.75mm 20 V +85 °C
RS stock no. 739-5156
Mfr. Part No.FSUSB63UMX
R 19.55
Each
units
Analogue - - - Surface Mount UMLP 12 - 1.8 x 1.8 x 0.5mm 1.8mm 1.8mm 0.5mm - +85 °C
RS stock no. 864-4712
Mfr. Part No.FSUSB63UMX
R 7.797
Each (On a Reel of 5000)
units
Multiplexer - - - Surface Mount UMLP 12 - 1.8 x 1.8 x 0.5mm 1.8mm 1.8mm 0.5mm - +85 °C
RS stock no. 864-4743
Mfr. Part No.FSUSB42MUX
R 4.098
Each (On a Reel of 4000)
units
- 1 6.5Ω - Surface Mount MSOP 10 - 3 x 3 x 0.85mm 3mm 3mm 0.85mm - +85 °C
RS stock no. 739-5144
Mfr. Part No.FSUSB42MUX
R 10.19
Each
units
- 2 6.5Ω - Surface Mount MSOP 10 - 3 x 3 x 0.7mm 3mm 3mm 0.7mm - +85 °C
RS stock no. 178-4411
Mfr. Part No.FUSB302BVMPX
R 19.236
Each (In a Pack of 10)
units
USB 1 - - Surface Mount WQFN 14 - 2.5 x 2.5 x 0.72mm 2.5mm 2.5mm 0.72mm 21 V +105 °C
RS stock no. 862-8906
Mfr. Part No.FSA832L10X
R 9.425
Each (In a Pack of 25)
units
Isolation 1 - Surface Mount MicroPak 10 - 2.1 x 1.6 x 0.5mm 2.1mm 1.6mm 0.5mm 6 V +85 °C
RS stock no. 178-4287
Mfr. Part No.FUSB303TMX
R 3.192
Each (On a Reel of 5000)
units
USB 1 - - Surface Mount QFN 12 - 1.65 x 1.65 x 0.35mm 1.65mm 1.65mm 0.35mm 22 V +85 °C
RS stock no. 166-2029
Mfr. Part No.FSA832L10X
R 4.306
Each (On a Reel of 5000)
units
Isolation 1 - Surface Mount MicroPak 10 - 2.1 x 1.6 x 0.5mm 2.1mm 1.6mm 0.5mm 6 V +85 °C
RS stock no. 186-1487
Mfr. Part No.FSA1153UCX
R 13.188
Each (In a Pack of 10)
units
USB - - Surface Mount WLCSP 12 - 1.605 x 1.44 x 0.42mm 1.61mm 1.44mm 0.42mm 5.5 V +85 °C
RS stock no. 178-4284
Mfr. Part No.FUSB302BVMPX
R 14.651
Each (On a Reel of 3000)
units
USB 1 - - Surface Mount WQFN 14 - 2.5 x 2.5 x 0.72mm 2.5mm 2.5mm 0.72mm 21 V +105 °C
RS stock no. 163-0710
Mfr. Part No.NCP383LMUAJAATXG
R 6.878
Each (On a Reel of 3000)
units
High Side 2 95Ω 850 mW Surface Mount UDFN 10 3.01A 3 x 3 x 0.5mm 3mm 3mm 0.5mm 5.5 V +85 °C
RS stock no. 178-4282
Mfr. Part No.FSUSB242UCX
R 3.84
Each (On a Reel of 3000)
units
USB 2 - Surface Mount WLCSP 9 - 1.26 x 1.26 x 0.31mm 1.26mm 1.26mm 0.31mm 5.5 V +85 °C
RS stock no. 178-4635
Mfr. Part No.FSUSB242UCX
R 9.177
Each (In a Pack of 10)
units
USB 2 - Surface Mount WLCSP 9 - 1.26 x 1.26 x 0.31mm 1.26mm 1.26mm 0.31mm 5.5 V +85 °C
RS stock no. 186-1507
Mfr. Part No.FUSB307BVMPX
R 25.368
Each (In a Pack of 5)
units
USB - - - Surface Mount WQFN 16 210.5mA 3 x 3 x 0.75mm 3mm 3mm 0.75mm 21.5 V +105 °C
RS stock no. 178-4474
Mfr. Part No.FUSB307BMPX
R 18.165
Each (In a Pack of 10)
units
USB 1 - - Surface Mount WQFN 16 210.5mA 3 x 3 x 0.75mm 3mm 3mm 0.75mm 21.5 V +85 °C
RS stock no. 805-7186
Mfr. Part No.NCP383LMUAJAATXG
R 13.577
Each (In a Pack of 10)
units
High Side 2 95Ω 850 mW Surface Mount UDFN 10 3.01A 3 x 3 x 0.5mm 3mm 3mm 0.5mm 5.5 V +85 °C