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$13.04
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 168-4137
製造零件編號TPS2540RTET
HK$12.49
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 921-0470
製造零件編號AP2337SA-7
HK$3.18
/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$5.13
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 864-4743
製造零件編號FSUSB42MUX
HK$2.19
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$1.11
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 730-0657
製造零件編號TPS2540RTET
HK$18.40
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 165-8453
製造零件編號AP2553AW6-7
HK$1.411
個 (在毎卷:3000)
單位
High Side 1 135mΩ Internally Limited Surface Mount SOT-26 6 2542mA 3.1 x 1.7 x 1.3mm 3.1mm 1.7mm 1.3mm 5.5 V +85 °C
RS庫存編號 122-3302
製造零件編號AP2152MPG-13
HK$5.842
個 (在毎卷:2500)
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 905-4624
製造零件編號1689
HK$213.50
單位
- - - - Panel Mount - - - 20 (L) x 38 (W)mm 20mm 38mm - - -
RS庫存編號 923-2461
製造零件編號TPS2042BD
HK$14.20
毎管:75 個
單位
High Side, USB Power Distribution 4 49mΩ 585.82 mW Surface Mount SOIC 8 1.25A 4.9 x 3.91 x 1.58mm 4.9mm 3.91mm 1.58mm 5.5 V +85 °C
RS庫存編號 165-4312
製造零件編號MIC2005A-1YM6-TR
BrandMicrochip
HK$1.827
個 (在毎卷:3000)
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 817-5840
製造零件編號BQ24195RGET
HK$28.49
單位
High Side, Low Side 1 51mΩ - Surface Mount VQFN 24 9A 4.15 x 4.15 x 0.95mm 4.15mm 4.15mm 0.95mm 17 V +85 °C
RS庫存編號 177-0325
製造零件編號MIC2075-2YM
BrandMicrochip
HK$7.151
毎管:95 個
單位
USB High Side Power 1 160mΩ - Surface Mount SOIC 8 0.85A 4.93 x 3.94 x 1.48mm 4.93mm 3.94mm 1.48mm 5.5 V +85 °C
RS庫存編號 145-9133
製造零件編號MIC2025-2YM
BrandMicrochip
HK$6.129
毎管:95 個
單位
High Side, USB Power Distribution 3 90mΩ Internally Limited Surface Mount SOIC 8 0.7A 5 x 3.99 x 1.63mm 5mm 3.99mm 1.63mm 5.5 V +85 °C
RS庫存編號 170-8980
製造零件編號AP2553AFDC-7
HK$1.411
個 (在毎卷:3000)
單位
High Side 1 150mΩ 833 mW Surface Mount U-DFN2020 6 2542mA 2.075 x 2.075 x 0.58mm 2.08mm 2.075mm 0.58mm 5.5 V +85 °C
RS庫存編號 517-1084
製造零件編號TPS2044BD
HK$23.96
/個 (每包:5個)
單位
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庫存編號 133-0735
製造零件編號TPS2559QWDRCTQ1
HK$20.005
/個 (每包:2個)
單位
Power 3 13mΩ Internally Limited Surface Mount VSON 10 7460mA 3.1 x 3.1 x 0.95mm 3.1mm 3.1mm 0.95mm 6.5 V +125 °C
RS庫存編號 862-8906
製造零件編號FSA832L10X
HK$5.49
/個 (每包:25個)
單位
Isolation 1 - Surface Mount MicroPak 10 - 2.1 x 1.6 x 0.5mm 2.1mm 1.6mm 0.5mm 6 V +85 °C