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. 822-8830
Mfr. Part No.AP2401MP-13
R 5.281
Each (In a Pack of 25)
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. 823-3176
Mfr. Part No.AP2111SG-13
R 3.459
Each (In a Pack of 20)
units
High Side 2 170mΩ Internally Limited Surface Mount 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. 739-5156
Mfr. Part No.FSUSB63UMX
R 20.28
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. 122-3267
Mfr. Part No.AP2111SG-13
R 3.356
Each (On a Reel of 2500)
units
High Side 2 170mΩ Internally Limited Surface Mount 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. 169-7369
Mfr. Part No.AP2401MP-13
R 2.101
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. 460-758
Mfr. Part No.LM3525M-L/NOPB
R 23.076
Each (In a Pack of 5)
units
High Side 3 80mΩ 700 mW Surface Mount SOIC 8 2.25A 4.9 x 3.9 x 1.45mm 4.9mm 3.9mm 1.45mm 5.5 V +85 °C
RS stock no. 154-7658
Mfr. Part No.LTC4090EDJC#PBF
R 88.658
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. 921-0486
Mfr. Part No.AP2511MP-13
R 5.765
Each (In a Pack of 30)
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. 662-2457
Mfr. Part No.TPS2051BDGN
R 19.758
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. 517-1056
Mfr. Part No.TPS2034D
R 43.084
Each (In a Pack of 5)
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. 121-9198
Mfr. Part No.TPS2051BDGN
R 16.791
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. 910-1506
Mfr. Part No.MIC2026-2YM
BrandMicrochip
R 16.773
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. 165-4225
Mfr. Part No.MIC2005A-1YM5-TR
BrandMicrochip
R 3.537
Each (On a Reel of 3000)
units
High Side 1 275mΩ Internally Limited Surface Mount SOT-23 5 0.5A 2.9 x 1.6 x 1.3mm 2.9mm 1.6mm 1.3mm 5.5 V +85 °C
RS stock no. 910-1496
Mfr. Part No.MIC2076-2YM
BrandMicrochip
R 20.254
Each (In a Pack of 5)
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. 517-1084
Mfr. Part No.TPS2044BD
R 45.998
Each (In a Pack of 5)
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. 920-3403
Mfr. Part No.TPS2044BD
R 39.648
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. 122-2325
Mfr. Part No.AP2331SA-7
R 2.199
Each (On a Reel of 3000)
units
High Side 1 350mΩ - Surface Mount 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. 709-8824
Mfr. Part No.TPS2552DBVT
R 17.27
Each
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. 739-5144
Mfr. Part No.FSUSB42MUX
R 11.30
Each
units
- 2 6.5Ω - Surface Mount MSOP 10 - 3 x 3 x 0.7mm 3mm 3mm 0.7mm - +85 °C
RS stock no. 145-9131
Mfr. Part No.MIC2076-2YM
BrandMicrochip
R 16.988
Each (In a Tube of 95)
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