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. 662-2460
Mfr. Part No.TPS2052BDGN
MYR6.508
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. 145-6749
Mfr. Part No.TPS2052BDGN
MYR5.149
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. 100-0706
Mfr. Part No.LM3526M-L/NOPB
MYR5.848
Each (In a Tube of 95)
units
High Side 4 100mΩ 700 mW Surface Mount SOIC 8 2.2A 4.9 x 3.9 x 1.45mm 4.9mm 3.9mm 1.45mm 5.5 V +85 °C
RS Stock No. 460-792
Mfr. Part No.LM3526M-L/NOPB
MYR8.428
Each (In a Pack of 5)
units
High Side 4 100mΩ 700 mW Surface Mount SOIC 8 2.2A 4.9 x 3.9 x 1.45mm 4.9mm 3.9mm 1.45mm 5.5 V +85 °C
RS Stock No. 169-7367
Mfr. Part No.AP2191WG-7
MYR1.918
Each (On a Reel of 3000)
units
High Side 1 170mΩ Internally Limited Surface Mount 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. 920-3403
Mfr. Part No.TPS2044BD
MYR10.27
Each (In a Tube of 40)
units
High Side, USB Power Distribution 8 70mΩ 898.47 mW Surface Mount SOIC 16 1.25A 9.9 x 3.91 x 1.58mm 9.9mm 3.91mm 1.58mm 5.5 V +85 °C
RS Stock No. 122-3270
Mfr. Part No.AP2411MP-13
MYR0.536
Each (On a Reel of 2500)
units
High Side 2 135mΩ Internally Limited Surface Mount 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. 921-0414
Mfr. Part No.AP2152SG-13
MYR4.784
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. 168-5062
Mfr. Part No.TPS2559QWDRCTQ1
MYR8.75
Each (On a Reel of 250)
units
Power 3 13mΩ Internally Limited Surface Mount VSON 10 7460mA 3.1 x 3.1 x 0.95mm 3.1mm 3.1mm 0.95mm 6.5 V +125 °C
New
RS Stock No. 202-7335
Mfr. Part No.NCP81599MNTXG
MYR7.629
Each (In a Pack of 25)
units
Adjustable 1 - 4.1 W Surface Mount QFN32 32 - - - - - - -
RS Stock No. 146-4908
Mfr. Part No.AP22814AW5-7
MYR1.47
Each (In a Pack of 10)
units
High Side 1 65mΩ - Surface Mount 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. 662-2439
Mfr. Part No.TPS2041BDGN
MYR5.702
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. 921-5074
Mfr. Part No.TPS2552DBVT
MYR2.322
Each (On a Reel of 250)
units
USB Power Distribution 1 85mΩ 285 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
RS Stock No. 922-4725
Mfr. Part No.TPS2041BDBVT
MYR3.152
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
New
RS Stock No. 205-2422
Mfr. Part No.NCV81599MWTXG
MYR4.857
Each (On a Reel of 5000)
units
Adjustable 2 - 4.1 W Surface Mount QFNW-32 32 - - - - - - -
RS Stock No. 177-0790
Mfr. Part No.MIC2075-2YM
BrandMicrochip
MYR4.17
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. 179-1647
Mfr. Part No.TPS2034D
MYR13.556
Each (In a Tube of 75)
units
High Side, USB Power Distribution 4 33mΩ 725 mW Surface Mount SOIC 8 3A 4.9 x 3.91 x 1.58mm 4.9mm 3.91mm 1.58mm 5.5 V +85 °C
RS Stock No. 146-0314
Mfr. Part No.MIC2506YM
BrandMicrochip
MYR12.539
Each (In a Tube of 95)
units
High Side, USB Power Distribution 4 75mΩ Internally Limited Surface Mount 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. 732-8746
Mfr. Part No.MAX1607ESA+
MYR6.75
Each
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. 177-0562
Mfr. Part No.MIC2075-1YMM
BrandMicrochip
MYR3.397
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
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