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 812-0408
製造零件編號TPS2511DGN
HK$13.04
/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 162-7918
製造零件編號TPS2511DGN
HK$14.996
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 921-0470
製造零件編號AP2337SA-7
HK$2.76
/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 739-5144
製造零件編號FSUSB42MUX
HK$5.28
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 864-4743
製造零件編號FSUSB42MUX
HK$2.009
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 165-8353
製造零件編號AP2337SA-7
HK$1.208
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 824-5490
製造零件編號AP2152MPG-13
HK$12.41
/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 122-2931
製造零件編號AP2156MPG-13
HK$4.335
個 (在毎卷:2500)
單位
High Side 2 160mΩ Internally Limited Surface Mount MSOP 8 1A 3.1 x 3.1 x 0.95mm 3.1mm 3.1mm 0.95mm 5.5 V +85 °C
RS庫存編號 824-5513
製造零件編號AP2142SG-13
HK$10.70
/個 (每包:5個)
單位
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庫存編號 170-9001
製造零件編號AP2152SG-13
HK$8.67
個 (在毎卷:2500)
單位
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
全新
RS庫存編號 209-7680
製造零件編號MIC2025-1YM-TR
BrandMicrochip
HK$5.639
個 (在毎卷:2500)
單位
USB High Side Power 1 140000000Ω - Surface Mount SOIC 8 - - - - - - -
RS庫存編號 178-4635
製造零件編號FSUSB242UCX
HK$5.026
/個 (每包:10個)
單位
USB 2 - Surface Mount WLCSP 9 - 1.26 x 1.26 x 0.31mm 1.26mm 1.26mm 0.31mm 5.5 V +85 °C
RS庫存編號 162-7141
製造零件編號TPS2064DGN
HK$20.446
毎管:80 個
單位
High Side, USB Power Distribution 4 70mΩ 1.37 W Surface Mount MSOP 8 2.1A 3 x 3 x 1.02mm 3mm 3mm 1.02mm 5.5 V +70 °C
RS庫存編號 146-4793
製造零件編號AP22814AM8-13
HK$4.77
/個 (每包:10個)
單位
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庫存編號 662-2384
製造零件編號TPS2051BDBVT
HK$10.242
/個 (每包:5個)
單位
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
RS庫存編號 202-7334
製造零件編號NCP81599MNTXG
HK$6.858
個 (在毎卷:2500)
單位
Adjustable 1 - 4.1 W Surface Mount QFN32 32 - - - - - - -
RS庫存編號 122-3267
製造零件編號AP2111SG-13
HK$2.452
個 (在毎卷:2500)
單位
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庫存編號 122-3270
製造零件編號AP2411MP-13
HK$1.303
個 (在毎卷:2500)
單位
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庫存編號 177-0326
製造零件編號MIC2075-2YMM
BrandMicrochip
HK$6.077
毎管:100 個
單位
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庫存編號 122-2325
製造零件編號AP2331SA-7
HK$1.303
個 (在毎卷:3000)
單位
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