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. 145-6749
Mfr. Part No.TPS2052BDGN
MYR5.478
Each (In a Tube of 80)
units
High Side, USB Power Distribution 4 70mΩ 1.71 W Surface Mount MSOP 8 1.25A 3 x 3 x 1.02mm 3mm 3mm 1.02mm 5.5 V +85 °C
RS Stock No. 662-2460
Mfr. Part No.TPS2052BDGN
MYR7.394
Each (In a Pack of 5)
units
High Side, USB Power Distribution 4 70mΩ 1.71 W Surface Mount MSOP 8 1.25A 3 x 3 x 1.02mm 3mm 3mm 1.02mm 5.5 V +85 °C
RS Stock No. 145-6565
Mfr. Part No.TPS2066D
MYR7.191
Each (In a Tube of 75)
units
High Side, USB Power Distribution 4 70mΩ 585.82 mW Surface Mount SOIC 8 1.5A 4.9 x 3.91 x 1.58mm 4.9mm 3.91mm 1.58mm 5.5 V +85 °C
New
RS Stock No. 178-4289
Mfr. Part No.FUSB307BMPX
MYR3.294
Each (On a Reel of 3000)
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. 145-6966
Mfr. Part No.TPS2051BD
MYR3.863
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. 662-2473
Mfr. Part No.TPS2064DGN
MYR10.688
Each (In a Pack of 5)
units
High Side, USB Power Distribution 4 70mΩ 1.37 W Surface Mount MSOP 8 2.1A 3 x 3 x 1.02mm 3mm 3mm 1.02mm 5.5 V +70 °C
RS Stock No. 662-2384
Mfr. Part No.TPS2051BDBVT
MYR5.752
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. 809-9890
Mfr. Part No.ADP194ACBZ-R7
MYR2.99
Each (In a Pack of 10)
units
High Side 1 120mΩ - Surface Mount WLCSP 4 - 0.8 x 0.8 x 0.33mm 0.8mm 0.8mm 0.33mm 3.6 V +85 °C
RS Stock No. 527-366
Mfr. Part No.TPS2041BD
MYR4.416
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
MYR1.90
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. 177-0314
Mfr. Part No.MIC2025-1YM
MYR2.87
Each (In a Tube of 95)
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. 165-4275
Mfr. Part No.MIC2026-1YM-TR
BrandMicrochip
MYR3.055
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. 146-4807
Mfr. Part No.AP22814BM8-13
MYR1.14
Each (In a Pack of 10)
units
High Side 2 65mΩ - Surface Mount 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. 922-4725
Mfr. Part No.TPS2041BDBVT
MYR3.961
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. 177-0562
Mfr. Part No.MIC2075-1YMM
MYR3.355
Each (In a Pack of 20)
units
USB High Side Power 1 160mΩ - Surface Mount MSOP 8 0.85A 3 x 3 x 0.92mm 3mm 3mm 0.92mm 5.5 V +85 °C
RS Stock No. 169-8418
Mfr. Part No.MAX1607ESA+
BrandMaxim
MYR4.54
Each (In a Tube of 100)
units
High Side 1 150mΩ 471 mW Surface Mount SOIC 8 1A 5 x 4 x 1.5mm 5mm 4mm 1.5mm 5.5 V +85 °C
RS Stock No. 662-2413
Mfr. Part No.TPS2021D
MYR5.472
Each (In a Pack of 5)
units
High Side, USB Power Distribution 4 33mΩ 725 mW Surface Mount 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. 145-9400
Mfr. Part No.MIC2545A-1YM
BrandMicrochip
MYR8.419
Each (In a Tube of 95)
units
High Side, USB Power Distribution - - Internally Limited Surface Mount SOP 8 3A 5 x 3.99 x 1.63mm 5mm 3.99mm 1.63mm 5.5 V +85 °C
RS Stock No. 709-8795
Mfr. Part No.TPS2553DBVT
MYR8.08
Each
units
USB Power Distribution 1 85mΩ 625 mW Surface Mount SOT-23 6 1.2A 2.9 x 1.6 x 1.15mm 2.9mm 1.6mm 1.15mm 6.5 V +85 °C
New
RS Stock No. 190-1291
Mfr. Part No.MAX893LESA+
BrandMaxim
MYR10.52
Each (In a Pack of 5)
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
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