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 Package Type Pin Count Current Limit Dimensions Length Width Height Maximum Input Voltage Maximum Operating Temperature Automotive Standard
RS Stock No. 169-0426
Mfr. Part No.BD6510F-E2
BrandROHM
$1.79
Each (On a Reel of 2500)
units
USB High Side Power 4 100mΩ 560 mW SOP 8 2A 5 x 4.4 x 1.5mm 5mm 4.4mm 1.5mm - - -
RS Stock No. 122-2325
Mfr. Part No.AP2331SA-7
$0.208
Each (On a Reel of 3000)
units
High Side 1 350mΩ - SOT-23 3 0.5A 3 x 1.4 x 1.1mm 3mm 1.4mm 1.1mm 5.2 V +85 °C -
RS Stock No. 162-7140
Mfr. Part No.TPS2062D
$2.83
Each (In a Tube of 75)
units
High Side, USB Power Distribution 4 70mΩ 585.82 mW SOIC 8 1.5A 4.9 x 3.91 x 1.58mm 4.9mm 3.91mm 1.58mm 5.5 V +85 °C -
RS Stock No. 822-8830
Mfr. Part No.AP2401MP-13
$0.497
Each (In a Pack of 25)
units
High Side 2 135mΩ Internally Limited MSOP 8 2.85A 3.1 x 3.1 x 0.95mm 3.1mm 3.1mm 0.95mm 5.5 V +85 °C -
RS Stock No. 910-1691
Mfr. Part No.MIC2026-2YM-TR
BrandMicrochip
$1.53
Each (In a Pack of 10)
units
High Side 2 170mΩ Internally Limited SOIC 8 - 4.93 x 3.94 x 1.48mm 4.93mm 3.94mm 1.48mm 5.5 V +85 °C -
RS Stock No. 146-4707
Mfr. Part No.AP22814AW5-7
$0.387
Each (On a Reel of 3000)
units
High Side 1 65mΩ - SOT25 5 3.8A 3.1 x 1.7 x 1.3mm 3.1mm 1.7mm 1.3mm 2.4 V +85 °C -
RS Stock No. 921-0414
Mfr. Part No.AP2152SG-13
$1.60
Each (In a Pack of 5)
units
High Side 2 160mΩ Internally Limited 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. 146-4714
Mfr. Part No.AP22811BW5-7
$0.326
Each (On a Reel of 3000)
units
High Side 1 90mΩ - 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. 910-1600
Mfr. Part No.MIC2506YM
BrandMicrochip
$5.56
Each (In a Pack of 2)
units
High Side, USB Power Distribution 4 75mΩ Internally Limited SOIC 8 2A 4.93 x 3.94 x 1.48mm 4.93mm 3.94mm 1.48mm 7.5 V +85 °C -
RS Stock No. 146-4781
Mfr. Part No.AP22804BSN-7
$0.783
Each (In a Pack of 10)
units
High Side 1 65mΩ - U-DFN2020 5 + Tab 3.3A 2.07 x 2.07 x 0.58mm 2.07mm 2.07mm 0.58mm 2.4 V +85 °C -
RS Stock No. 171-3082
Mfr. Part No.TC7USB42MU
BrandToshiba
$0.518
Each (In a Pack of 25)
units
USB 2 14Ω 200 mW UQFN 10 50mA 1.4 x 1.8 x 0.5mm 1.4mm 1.8mm 0.5mm 4.3 V +85 °C -
RS Stock No. 911-2720
Mfr. Part No.MIC2005-0.5YM6-TR
BrandMicrochip
$1.392
Each (In a Pack of 5)
units
High Side, USB Power Distribution 1 275mΩ Internally Limited 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. 122-3267
Mfr. Part No.AP2111SG-13
$0.369
Each (On a Reel of 2500)
units
High Side 2 170mΩ Internally Limited SOIC 8 2.8A 4.95 x 3.95 x 1.5mm 4.95mm 3.95mm 1.5mm 5.5 V +85 °C -
RS Stock No. 146-0314
Mfr. Part No.MIC2506YM
BrandMicrochip
$4.632
Each (In a Tube of 95)
units
High Side, USB Power Distribution 4 75mΩ Internally Limited SOIC 8 2A 4.93 x 3.94 x 1.48mm 4.93mm 3.94mm 1.48mm 7.5 V +85 °C -
RS Stock No. 186-1262
Mfr. Part No.FUSB307BVMPX
$1.478
Each (On a Reel of 3000)
units
USB - - - WQFN 16 210.5mA 3 x 3 x 0.75mm 3mm 3mm 0.75mm 21.5 V +105 °C -
RS Stock No. 822-8824
Mfr. Part No.AP2191WG-7
$1.28
Each (In a Pack of 10)
units
High Side 1 170mΩ Internally Limited SOT-25 5 2.6A 3.1 x 1.7 x 1.3mm 3.1mm 1.7mm 1.3mm 5.5 V +85 °C -
RS Stock No. 662-2413
Mfr. Part No.TPS2021D
$4.48
Each (In a Pack of 5)
units
High Side, USB Power Distribution 4 33mΩ 725 mW SOIC 8 0.9A 4.9 x 3.91 x 1.58mm 4.9mm 3.91mm 1.58mm 5.5 V +85 °C -
RS Stock No. 146-4711
Mfr. Part No.AP22814AM8-13
$0.374
Each (On a Reel of 2500)
units
High Side 2 65mΩ - MSOP 8 3.8A 3.1 x 3.1 x 0.95mm 3.1mm 3.1mm 0.95mm 2.4 V +85 °C -
RS Stock No. 171-2069
Mfr. Part No.BD6516F-E2
BrandROHM
$1.32
Each (On a Reel of 2500)
units
High Side 2 180Ω 670 mW SOP 8 1.65A 5 x 4.4 x 1.5mm 5mm 4.4mm 1.5mm 5.5 V +85 °C -
RS Stock No. 162-7141
Mfr. Part No.TPS2064DGN
$4.128
Each (In a Tube of 80)
units
High Side, USB Power Distribution 4 70mΩ 1.37 W MSOP 8 2.1A 3 x 3 x 1.02mm 3mm 3mm 1.02mm 5.5 V +70 °C -
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