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 switchesMost 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. 761-9547
Mfr. Part No.LTC4090EDJC#PBF
£5.98
Each
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. 921-0411
Mfr. Part No.AP2171DM8G-13
£0.086
Each (In a Pack of 30)
Units
High Side 2 115mΩ Internally Limited Surface Mount MSOP 8 1.9A 3.1 x 3.1 x 0.95mm 3.1mm 3.1mm 0.95mm 5.5 V +85 °C
RS Stock No. 662-2439
Mfr. Part No.TPS2041BDGN
£1.378
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. 921-0473
Mfr. Part No.AP2501M8-13
£0.272
Each (In a Pack of 30)
Units
Low Side 2 135mΩ Internally Limited Surface Mount MSOP 8 4.6A 3.1 x 3.1 x 0.8mm 3.1mm 3.1mm 0.8mm 5.5 V +85 °C
RS Stock No. 824-5513
Mfr. Part No.AP2142SG-13
£0.384
Each (In a Pack of 5)
Units
High Side 2 160mΩ Internally Limited Surface Mount SOP 8 1A 4.95 x 3.95 x 1.5mm 4.95mm 3.95mm 1.5mm 5.5 V +85 °C
RS Stock No. 145-1047
Mfr. Part No.TPS2148IDGN
£2.002
Each (In a Tube of 80)
Units
High Side, USB Power Distribution 2 340mΩ 1.46 W Surface Mount MSOP 8 0.4A 3 x 3 x 1.02mm 3mm 3mm 1.02mm 5.5 V +85 °C
RS Stock No. 169-0426
Mfr. Part No.BD6510F-E2
BrandROHM
£0.89
Each (On a Reel of 2500)
Units
USB High Side Power 4 100mΩ 560 mW Surface Mount SOP 8 2A 5 x 4.4 x 1.5mm 5mm 4.4mm 1.5mm - -
RS Stock No. 165-8345
Mfr. Part No.AP2501M8-13
£0.11
Each (On a Reel of 2500)
Units
Low Side 2 135mΩ Internally Limited Surface Mount MSOP 8 4.6A 3.1 x 3.1 x 0.8mm 3.1mm 3.1mm 0.8mm 5.5 V +85 °C
RS Stock No. 162-7138
Mfr. Part No.TPS2041BDGN
£1.173
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. 122-3267
Mfr. Part No.AP2111SG-13
£0.167
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. 517-1056
Mfr. Part No.TPS2034D
£2.216
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. 146-1247
Mfr. Part No.MAX893LESA+
£1.08
Each (In a Tube of 100)
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
RS Stock No. 122-3270
Mfr. Part No.AP2411MP-13
£0.10
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. 732-8106
Mfr. Part No.MAX893LESA+
£1.65
Each
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
RS Stock No. 169-7369
Mfr. Part No.AP2401MP-13
£0.10
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. 165-4209
Mfr. Part No.UCS1003-2-BP
BrandMicrochip
£0.925
Each (In a Tray of 490)
Units
- 2 55mΩ 2.19 W Surface Mount QFN 20 3000mA 4.1 x 4.1 x 0.9mm 4.1mm 4.1mm 0.9mm 5.5 V +125 °C
RS Stock No. 145-7721
Mfr. Part No.TPS2042BDGN
£1.443
Each (In a Tube of 80)
Units
High Side, USB Power Distribution 4 49mΩ 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. 823-3176
Mfr. Part No.AP2111SG-13
£0.17
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. 169-7472
Mfr. Part No.AP2142SG-13
£0.386
Each (On a Reel of 2500)
Units
High Side 2 160mΩ Internally Limited Surface Mount SOP 8 1A 4.95 x 3.95 x 1.5mm 4.95mm 3.95mm 1.5mm 5.5 V +85 °C
RS Stock No. 165-8523
Mfr. Part No.AP2171DM8G-13
£0.088
Each (On a Reel of 2500)
Units
High Side 2 115mΩ Internally Limited Surface Mount MSOP 8 1.9A 3.1 x 3.1 x 0.95mm 3.1mm 3.1mm 0.95mm 5.5 V +85 °C
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