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 165-8557
製造零件編號AP2145SG-13
HK$4.01
個 (在毎卷:2500)
單位
Low Side 2 140mΩ 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
RS庫存編號 186-1261
製造零件編號FSA1153UCX
HK$3.10
個 (在毎卷:3000)
單位
USB - - Surface Mount WLCSP 12 - 1.605 x 1.44 x 0.42mm 1.61mm 1.44mm 0.42mm 5.5 V +85 °C
RS庫存編號 885-5410
製造零件編號AP2553AFDC-7
HK$3.41
/個 (每包:10個)
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 177-0324
製造零件編號MIC2075-1YMM
BrandMicrochip
HK$5.311
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 662-2451
製造零件編號TPS2052BD
HK$12.246
/個 (每包:5個)
單位
High Side, USB Power Distribution 2 70mΩ 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 700-0735
製造零件編號BD6510F-E2
BrandROHM
HK$22.30
/個 (每包:2個)
單位
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庫存編號 665-8894
製造零件編號TPS2150IPWP
HK$33.46
/個 (每包:5個)
單位
- - - Internally Limited Surface Mount HTSSOP 14 - 5 x 4.4 x 1.15mm 5mm 4.4mm 1.15mm - +85 °C
RS庫存編號 812-0405
製造零件編號TPS2500DRCT
HK$18.776
/個 (每包:5個)
單位
High Side, Low Side 1 120mΩ 2.4 W Surface Mount VSON 10 130 → 1400mA 3.1 x 3.1 x 0.95mm 3.1mm 3.1mm 0.95mm 5.25 V +85 °C
RS庫存編號 921-0411
製造零件編號AP2171DM8G-13
HK$3.29
/個 (每包:30個)
單位
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庫存編號 165-4129
製造零件編號MIC2505-1YM
BrandMicrochip
HK$14.046
毎管:95 個
單位
High Side, USB Power Distribution - - Internally Limited Surface Mount SOIC 8 4A 4.93 x 3.94 x 1.48mm 4.93mm 3.94mm 1.48mm 7.5 V +85 °C
RS庫存編號 171-3040
製造零件編號TC7USB42MU
BrandToshiba
HK$1.435
個 (在毎卷:3000)
單位
USB 2 14Ω 200 mW Surface Mount UQFN 10 50mA 1.4 x 1.8 x 0.5mm 1.4mm 1.8mm 0.5mm 4.3 V +85 °C
RS庫存編號 822-8824
製造零件編號AP2191WG-7
HK$7.19
/個 (每包:10個)
單位
High Side 1 170mΩ Internally Limited Surface Mount SOT-25 5 2.6A 3.1 x 1.7 x 1.3mm 3.1mm 1.7mm 1.3mm 5.5 V +85 °C
RS庫存編號 189-7707
製造零件編號MAX893LESA+
HK$11.435
毎管:100 個
單位
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庫存編號 165-8558
製造零件編號AP2191SG-13
HK$4.491
個 (在毎卷:2500)
單位
High Side 2 115mΩ Internally Limited Surface Mount SOIC 8 2.6A 4.95 x 3.95 x 1.5mm 4.95mm 3.95mm 1.5mm 5.5 V +85 °C
RS庫存編號 145-0390
製造零件編號TPS2041BD
HK$8.899
毎管:75 個
單位
High Side, USB Power Distribution 4 70mΩ 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 146-0314
製造零件編號MIC2506YM
BrandMicrochip
HK$25.794
毎管:95 個
單位
High Side, USB Power Distribution 4 75mΩ Internally Limited Surface Mount SOIC 8 2A 4.93 x 3.94 x 1.48mm 4.93mm 3.94mm 1.48mm 7.5 V +85 °C
RS庫存編號 911-2720
製造零件編號MIC2005-0.5YM6-TR
BrandMicrochip
HK$7.32
/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 910-1506
製造零件編號MIC2026-2YM
BrandMicrochip
HK$8.57
/個 (每包:10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 910-1496
製造零件編號MIC2076-2YM
BrandMicrochip
HK$10.22
/個 (每包:5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 190-4412
製造零件編號MAX4899AEETE+
HK$26.839
毎管:100 個
單位
High Speed - 18Ω 1.67 W Surface Mount TQFN-EP 16 2mA 3 x 3 x 0.75mm 3mm 3mm 0.75mm 3.6 V +85 °C