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庫存編號 162-7918
製造零件編號TPS2511DGN
HK$13.666
毎管:80 個
單位
High Side 1 120mΩ Internally Limited Surface Mount MSOP 8 3330mA 3.1 x 3.1 x 0.95mm 3.1mm 3.1mm 0.95mm 5.5 V +85 °C
RS庫存編號 812-0408
製造零件編號TPS2511DGN
HK$13.716
/個 (每包:10個)
單位
High Side 1 120mΩ Internally Limited Surface Mount MSOP 8 3330mA 3.1 x 3.1 x 0.95mm 3.1mm 3.1mm 0.95mm 5.5 V +85 °C
RS庫存編號 730-0657
製造零件編號TPS2540RTET
HK$17.48
單位
High Side 1 120mΩ Internally Limited Surface Mount WQFN 16 2.8A 3.15 x 3.15 x 0.75mm 3.15mm 3.15mm 0.75mm 5.5 V +85 °C
RS庫存編號 165-8353
製造零件編號AP2337SA-7
HK$1.11
個 (在毎卷:3000)
單位
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庫存編號 864-4743
製造零件編號FSUSB42MUX
HK$1.978
個 (在毎卷:4000)
單位
- 1 6.5Ω - Surface Mount MSOP 10 - 3 x 3 x 0.85mm 3mm 3mm 0.85mm - +85 °C
RS庫存編號 921-0470
製造零件編號AP2337SA-7
HK$1.831
/個 (每包:30個)
單位
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庫存編號 168-4137
製造零件編號TPS2540RTET
HK$11.806
個 (在毎卷:250)
單位
High Side 1 120mΩ Internally Limited Surface Mount WQFN 16 2.8A 3.15 x 3.15 x 0.75mm 3.15mm 3.15mm 0.75mm 5.5 V +85 °C
RS庫存編號 739-5144
製造零件編號FSUSB42MUX
HK$5.13
單位
- 2 6.5Ω - Surface Mount MSOP 10 - 3 x 3 x 0.7mm 3mm 3mm 0.7mm - +85 °C
RS庫存編號 910-1830
製造零件編號MIC2076-1YM
BrandMicrochip
HK$9.704
/個 (每包:5個)
單位
High Side, USB Power Distribution - - 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
全新
RS庫存編號 178-4287
製造零件編號FUSB303TMX
HK$1.811
個 (在毎卷:5000)
單位
USB 1 - - Surface Mount QFN 12 - 1.65 x 1.65 x 0.35mm 1.65mm 1.65mm 0.35mm 22 V +85 °C
RS庫存編號 805-7186
製造零件編號NCP383LMUAJAATXG
HK$6.473
/個 (每包:10個)
單位
High Side 2 95Ω 850 mW Surface Mount UDFN 10 3.01A 3 x 3 x 0.5mm 3mm 3mm 0.5mm 5.5 V +85 °C
全新
RS庫存編號 178-4289
製造零件編號FUSB307BMPX
HK$6.213
個 (在毎卷:3000)
單位
USB 1 - - Surface Mount WQFN 16 210.5mA 3 x 3 x 0.75mm 3mm 3mm 0.75mm 21.5 V +85 °C
RS庫存編號 162-4887
製造零件編號TPS2020D
HK$12.121
毎管:75 個
單位
High Side, USB Power Distribution 4 33mΩ 725 mW Surface Mount SOIC 8 0.3A 4.9 x 3.91 x 1.58mm 4.9mm 3.91mm 1.58mm 5.5 V +85 °C
RS庫存編號 145-1047
製造零件編號TPS2148IDGN
HK$17.241
毎管:80 個
單位
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庫存編號 824-5490
製造零件編號AP2152MPG-13
HK$8.564
/個 (每包:5個)
單位
High Side 2 150mΩ Internally Limited Surface Mount MSOP 8 1A 3.1 x 3.05 x 0.95mm 3.1mm 3.05mm 0.95mm 5.5 V +85 °C
RS庫存編號 145-9131
製造零件編號MIC2076-2YM
BrandMicrochip
HK$6.949
毎管:95 個
單位
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庫存編號 911-2720
製造零件編號MIC2005-0.5YM6-TR
BrandMicrochip
HK$6.99
/個 (每包:5個)
單位
High Side, USB Power Distribution 1 275mΩ Internally Limited Surface Mount SOT-23 6 0.9A 2.9 x 1.6 x 0.9mm 2.9mm 1.6mm 0.9mm 5.5 V +85 °C
RS庫存編號 823-3185
製造零件編號AP2411MP-13
HK$2.175
/個 (每包:25個)
單位
High Side 1 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庫存編號 162-4888
製造零件編號TPS2022D
HK$11.524
毎管:75 個
單位
High Side, USB Power Distribution 4 33mΩ 725 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庫存編號 423-090
製造零件編號TPS2042BDGN
HK$15.904
/個 (每包:5個)
單位
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