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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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. 145-0390
Mfr. Part No.TPS2041BD
kr 8,159
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
RS Stock No. 905-4624
Mfr. Part No.1689
kr 228,51
Each
Units
- - - - Panel Mount - - - 20 (L) x 38 (W)mm 20mm 38mm - - -
RS Stock No. 527-366
Mfr. Part No.TPS2041BD
kr 9,088
Each (In a Pack of 5)
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
RS Stock No. 146-4839
Mfr. Part No.AP22811BW5-7
kr 0,946
Each (In a Pack of 10)
Units
High Side 1 90mΩ - Surface Mount SOT25 5 3.2A 3.1 x 1.7 x 1.3mm 3.1mm 1.7mm 1.3mm 2.4 V +85 °C
RS Stock No. 122-3271
Mfr. Part No.AP2411S-13
kr 0,975
Each (On a Reel of 2500)
Units
High Side 2 135mΩ Internally Limited Surface Mount SOIC 8 2.85A 4.95 x 3.95 x 1.5mm 4.95mm 3.95mm 1.5mm 5.5 V +85 °C
RS Stock No. 921-0414
Mfr. Part No.AP2152SG-13
kr 4,676
Each (In a Pack of 5)
Units
High Side 2 160mΩ Internally Limited Surface Mount SOIC 8 1A 4.95 x 3.95 x 1.5mm 4.95mm 3.95mm 1.5mm 5.5 V +85 °C
RS Stock No. 166-2029
Mfr. Part No.FSA832L10X
kr 2,273
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. 190-6478
Mfr. Part No.MAX4899AEETE+
kr 35,832
Each (In a Pack of 5)
Units
High Speed - 18Ω 1.67 W Surface Mount TQFN-EP 16 2mA 3 x 3 x 0.75mm 3mm 3mm 0.75mm 3.6 V +85 °C
RS Stock No. 910-1688
Mfr. Part No.MIC2009YM6-TR
BrandMicrochip
kr 8,828
Each (In a Pack of 5)
Units
High Side 1 275mΩ Internally Limited Surface Mount SOT-23 6 0.2 → 2A 2.9 x 1.6 x 1.3mm 2.9mm 1.6mm 1.3mm 5.5 V +85 °C
RS Stock No. 662-2451
Mfr. Part No.TPS2052BD
kr 12,784
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. 177-0790
Mfr. Part No.MIC2075-2YM
BrandMicrochip
kr 3,685
Each (In a Pack of 10)
Units
USB High Side Power 1 160mΩ - Surface Mount SOIC 8 0.85A 4.93 x 3.94 x 1.48mm 4.93mm 3.94mm 1.48mm 5.5 V +85 °C
RS Stock No. 662-2384
Mfr. Part No.TPS2051BDBVT
kr 8,936
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
New
RS Stock No. 204-2528
Mfr. Part No.MAX77958EWV+
kr 17,96
Each (In a Pack of 5)
Units
USB 1 - 24.4 mW Surface Mount WLP 6 - - - - - - -
RS Stock No. 189-7707
Mfr. Part No.MAX893LESA+
kr 10,631
Each (In a Tube of 100)
Units
High Side 2 160mΩ 471 mW Surface Mount SOIC 8 1.2A 5 x 4 x 1.5mm 5mm 4mm 1.5mm 5.5 V +85 °C
RS Stock No. 922-4738
Mfr. Part No.TPS2052BD
kr 10,791
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
RS Stock No. 166-2527
Mfr. Part No.FSUSB30MUX
kr 1,734
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. 122-3302
Mfr. Part No.AP2152MPG-13
kr 5,266
Each (On a Reel of 2500)
Units
High Side 2 150mΩ Internally Limited Surface Mount MSOP 8 1A 3.1 x 3.05 x 0.95mm 3.1mm 3.05mm 0.95mm 5.5 V +85 °C
RS Stock No. 824-5490
Mfr. Part No.AP2152MPG-13
kr 5,412
Each (In a Pack of 5)
Units
High Side 2 150mΩ Internally Limited Surface Mount MSOP 8 1A 3.1 x 3.05 x 0.95mm 3.1mm 3.05mm 0.95mm 5.5 V +85 °C
RS Stock No. 817-5587
Mfr. Part No.TS3USB31ERSER
kr 4,07
Each (On a Tape of 25)
Units
High Side 1 - - Surface Mount UQFN 8 - 1.55 x 1.55 x 0.55mm 1.55mm 1.55mm 0.55mm 4.3 V +85 °C
RS Stock No. 178-4411
Mfr. Part No.FUSB302BVMPX
kr 10,09
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
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