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
MYR9.08
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. 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. 145-6749
Mfr. Part No.TPS2052BDGN
MYR7.69
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. 177-0562
Mfr. Part No.MIC2075-1YMM
BrandMicrochip
MYR3.636
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. 165-8346
Mfr. Part No.AP2511MP-13
MYR0.589
Each (On a Reel of 2500)
units
High Side 2 135mΩ Internally Limited Surface Mount MSOP 8EP 8 4.6A 3.1 x 3.1 x 0.95mm 3.1mm 3.1mm 0.95mm 5.5 V +85 °C
RS Stock No. 146-4711
Mfr. Part No.AP22814AM8-13
MYR1.18
Each (On a Reel of 2500)
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. 169-7367
Mfr. Part No.AP2191WG-7
MYR2.798
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
New
RS Stock No. 190-6493
Mfr. Part No.MAX4906FELB+T
MYR26.455
Each (In a Pack of 2)
units
- - 423.7 mW Surface Mount μDFN 10 - 2.05 x 2.05 x 0.55mm 2.05mm 2.05mm 0.55mm 3.6 V +85 °C
RS Stock No. 154-7658
Mfr. Part No.LTC4090EDJC#PBF
MYR23.693
Each (In a Tube of 61)
units
- 2 215mΩ - Surface Mount DFN 22 0.525A 6 x 3 x 0.75mm 6mm 3mm 0.75mm 5.5 V +85 °C
RS Stock No. 162-7142
Mfr. Part No.TPS2065D
MYR5.44
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
RS Stock No. 146-4712
Mfr. Part No.AP22814BM8-13
MYR1.18
Each (On a Reel of 2500)
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. 146-4719
Mfr. Part No.AP22804ASN-7
MYR1.08
Each (On a Reel of 3000)
units
High Side 1 65mΩ - Surface Mount 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. 822-8824
Mfr. Part No.AP2191WG-7
MYR3.44
Each (In a Pack of 10)
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. 910-1506
Mfr. Part No.MIC2026-2YM
BrandMicrochip
MYR4.14
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. 165-8353
Mfr. Part No.AP2337SA-7
MYR0.532
Each (On a Reel of 3000)
units
High Side 1 170mΩ Internally Limited Surface Mount SOT-23 3 1.9A 3 x 1.4 x 1.1mm 3mm 1.4mm 1.1mm 5.5 V +85 °C
RS Stock No. 146-4793
Mfr. Part No.AP22814AM8-13
MYR2.28
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. 739-5156
Mfr. Part No.FSUSB63UMX
MYR4.70
Each
units
Analogue - - - Surface Mount UMLP 12 - 1.8 x 1.8 x 0.5mm 1.8mm 1.8mm 0.5mm - +85 °C
RS Stock No. 146-4721
Mfr. Part No.AP22804BSN-7
MYR1.08
Each (On a Reel of 3000)
units
High Side 1 65mΩ - Surface Mount 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. 146-4709
Mfr. Part No.AP22814BSN-7
MYR1.18
Each (On a Reel of 3000)
units
High Side 1 65mΩ - Surface Mount U-DFN2020 5 + Tab 3.8A 2.07 x 2.07 x 0.58mm 2.07mm 2.07mm 0.58mm 2.4 V +85 °C
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