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 251 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. 922-4729
Mfr. Part No.TPS2051BDBVT
R 17.512
Each (On a Reel of 250)
units
High Side, USB Power Distribution 2 95mΩ 285 mW Surface Mount SOT-23 5 1.25A 2.9 x 1.6 x 1.15mm 2.9mm 1.6mm 1.15mm 5.5 V +85 °C
RS stock no. 662-2384
Mfr. Part No.TPS2051BDBVT
R 18.816
Each (In a Pack of 5)
units
High Side, USB Power Distribution 2 95mΩ 285 mW Surface Mount SOT-23 5 1.25A 2.9 x 1.6 x 1.15mm 2.9mm 1.6mm 1.15mm 5.5 V +85 °C
RS stock no. 423-163
Mfr. Part No.TPS2042BD
R 20.832
Each (In a Pack of 5)
units
High Side, USB Power Distribution 4 49mΩ 585.82 mW Surface Mount SOIC 8 1.25A 4.9 x 3.91 x 1.58mm 4.9mm 3.91mm 1.58mm 5.5 V +85 °C
RS stock no. 923-2461
Mfr. Part No.TPS2042BD
R 23.868
Each (In a Tube of 75)
units
High Side, USB Power Distribution 4 49mΩ 585.82 mW Surface Mount SOIC 8 1.25A 4.9 x 3.91 x 1.58mm 4.9mm 3.91mm 1.58mm 5.5 V +85 °C
RS stock no. 111-5720
Mfr. Part No.UPD1002-A/MQ
BrandMicrochip
R 17.496
Each (In a Pack of 5)
units
USB Power Distribution - - - Surface Mount SQFN 32 - 5.1 x 5.1 x 0.95mm 5.1mm 5.1mm 0.95mm 6 V +70 °C
RS stock no. 144-5735
Mfr. Part No.UPD1002-A/MQ
BrandMicrochip
R 17.196
Each (In a Tray of 490)
units
USB Power Distribution - - - Surface Mount SQFN 32 - 5.1 x 5.1 x 0.95mm 5.1mm 5.1mm 0.95mm 6 V +70 °C
RS stock no. 812-0408
Mfr. Part No.TPS2511DGN
R 24.313
Each (In a Pack of 10)
units
High Side 1 120mΩ Internally Limited Surface Mount MSOP 8 3330mA 3.1 x 3.1 x 0.95mm 3.1mm 3.1mm 0.95mm 5.5 V +85 °C
RS stock no. 165-4312
Mfr. Part No.MIC2005A-1YM6-TR
BrandMicrochip
R 3.126
Each (On a Reel of 3000)
units
High Side, USB Power Distribution 1 275mΩ Internally Limited Surface Mount SOT-23 6 0.9A 2.9 x 1.6 x 0.9mm 2.9mm 1.6mm 0.9mm 5.5 V +85 °C
RS stock no. 670-9999
Mfr. Part No.FSUSB30MUX
R 8.59
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 5.204
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. 910-1676
Mfr. Part No.MIC2026-1YM-TR
BrandMicrochip
R 13.549
Each (In a Pack of 10)
units
High Side 2 170mΩ Internally Limited Surface Mount SOIC 8 - 4.93 x 3.94 x 1.48mm 4.93mm 3.94mm 1.48mm 5.5 V +85 °C
RS stock no. 662-2451
Mfr. Part No.TPS2052BD
R 28.716
Each (In a Pack of 5)
units
High Side, USB Power Distribution 2 70mΩ 585.82 mW Surface Mount SOIC 8 1.25A 4.9 x 3.91 x 1.58mm 4.9mm 3.91mm 1.58mm 5.5 V +85 °C
RS stock no. 166-2089
Mfr. Part No.FAN3989MLP8X
R 6.24
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. 910-1509
Mfr. Part No.MIC2026-1YM
BrandMicrochip
R 13.543
Each (In a Pack of 10)
units
High Side, USB Power Distribution 4 90mΩ Internally Limited Surface Mount SOIC 8 0.9A 5 x 3.99 x 1.63mm 5mm 3.99mm 1.63mm 5.5 V +85 °C
RS stock no. 911-2723
Mfr. Part No.MIC2005A-1YM6-TR
BrandMicrochip
R 3.575
Each (In a Pack of 25)
units
High Side, USB Power Distribution 1 275mΩ Internally Limited Surface Mount SOT-23 6 0.9A 2.9 x 1.6 x 0.9mm 2.9mm 1.6mm 0.9mm 5.5 V +85 °C
RS stock no. 162-7918
Mfr. Part No.TPS2511DGN
R 24.588
Each (In a Tube of 80)
units
High Side 1 120mΩ Internally Limited Surface Mount MSOP 8 3330mA 3.1 x 3.1 x 0.95mm 3.1mm 3.1mm 0.95mm 5.5 V +85 °C
RS stock no. 809-4996
Mfr. Part No.FAN3989MLP8X
R 6.216
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. 165-4275
Mfr. Part No.MIC2026-1YM-TR
BrandMicrochip
R 11.278
Each (On a Reel of 2500)
units
High Side, USB Power Distribution 4 90mΩ Internally Limited Surface Mount SOIC 8 0.9A 5 x 3.99 x 1.63mm 5mm 3.99mm 1.63mm 5.5 V +85 °C
RS stock no. 165-4087
Mfr. Part No.MIC2026-1YM
BrandMicrochip
R 12.649
Each (In a Tube of 95)
units
High Side, USB Power Distribution 4 90mΩ Internally Limited Surface Mount SOIC 8 0.9A 5 x 3.99 x 1.63mm 5mm 3.99mm 1.63mm 5.5 V +85 °C
RS stock no. 922-4738
Mfr. Part No.TPS2052BD
R 21.029
Each (In a Tube of 75)
units
High Side, USB Power Distribution 4 70mΩ 585.82 mW Surface Mount SOIC 8 1.25A 4.9 x 3.91 x 1.58mm 4.9mm 3.91mm 1.58mm 5.5 V +85 °C