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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detalji proizvoda Proizvođač 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 Minimum Input Voltage Minimum Output Current Minimum Operating Temperature
ON Semiconductor FUSB303TMX, USB Power Switch, USB, 4 V min. 12-Pin, QFN ON Semiconductor USB 1 - - Surface Mount QFN 12 - 1.65 x 1.65 x 0.35mm 1.65mm 1.65mm 0.35mm 22 V +85 °C 4 V - -40 °C
ON Semiconductor FSUSB242UCX, Dual USB Power Switch, USB, 5Ω, 2.7 V min. 9-Pin, WLCSP ON Semiconductor 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 2.7 V - -40 °C
ON Semiconductor FUSB307BMPX, USB Power Switch, USB, 4 V min. 16-Pin, WQFN ON Semiconductor USB 1 - - Surface Mount WQFN 16 210.5mA 3 x 3 x 0.75mm 3mm 3mm 0.75mm 21.5 V +85 °C 4 V 30mA -40 °C
ON Semiconductor FSUSB242UCX, Dual USB Power Switch, USB, 5Ω, 2.7 V min. 9-Pin, WLCSP ON Semiconductor 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 2.7 V - -40 °C
ON Semiconductor FUSB302BVMPX, USB Power Switch, USB, 4 V min. 14-Pin, WQFN ON Semiconductor USB 1 - - Surface Mount WQFN 14 - 2.5 x 2.5 x 0.72mm 2.5mm 2.5mm 0.72mm 21 V +105 °C 4 V - -40 °C
ON Semiconductor FUSB302BVMPX, USB Power Switch, USB, 4 V min. 14-Pin, WQFN ON Semiconductor USB 1 - - Surface Mount WQFN 14 - 2.5 x 2.5 x 0.72mm 2.5mm 2.5mm 0.72mm 21 V +105 °C 4 V - -40 °C
ON Semiconductor FUSB303TMX, USB Power Switch, USB, 4 V min. 12-Pin, QFN ON Semiconductor USB 1 - - Surface Mount QFN 12 - 1.65 x 1.65 x 0.35mm 1.65mm 1.65mm 0.35mm 22 V +85 °C 4 V - -40 °C
ON Semiconductor FUSB307BMPX, USB Power Switch, USB, 4 V min. 16-Pin, WQFN ON Semiconductor USB 1 - - Surface Mount WQFN 16 210.5mA 3 x 3 x 0.75mm 3mm 3mm 0.75mm 21.5 V +85 °C 4 V 30mA -40 °C
ON Semiconductor, FSA1153UCX ON Semiconductor USB - - Surface Mount WLCSP 12 - 1.605 x 1.44 x 0.42mm 1.61mm 1.44mm 0.42mm 5.5 V +85 °C 2.7 V - -40 °C
ON Semiconductor, FSA1153UCX ON Semiconductor USB - - Surface Mount WLCSP 12 - 1.605 x 1.44 x 0.42mm 1.61mm 1.44mm 0.42mm 5.5 V +85 °C 2.7 V - -40 °C
ON Semiconductor, FUSB307BVMPX ON Semiconductor USB - - - Surface Mount WQFN 16 210.5mA 3 x 3 x 0.75mm 3mm 3mm 0.75mm 21.5 V +105 °C 5 V 30mA -40 °C
ON Semiconductor, FUSB307BVMPX ON Semiconductor USB - - - Surface Mount WQFN 16 210.5mA 3 x 3 x 0.75mm 3mm 3mm 0.75mm 21.5 V +105 °C 5 V 30mA -40 °C
Microchip Technology MIC2025-2YMM, USB Power Switch High Side, 160mΩ, 2.7 V min. 8-Pin, MSOP Microchip Technology 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 2.7 V 500mA -40 °C
Microchip Technology MIC2075-1YMM, Power Distribution Switch High Side, 160mΩ, 2.7 V min. 8-Pin, MSOP Microchip Technology 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 2.7 V 500mA -40 °C
Microchip Technology MIC2075-2YMM, Power Distribution Switch High Side, 160mΩ, 2.7 V min. 8-Pin, MSOP Microchip Technology 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 2.7 V 500mA -40 °C
Microchip Technology MIC2075-1YM, Power Distribution Switch High Side, 160mΩ, 2.7 V min. 8-Pin, SOIC Microchip Technology 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 2.7 V 500mA -40 °C
Microchip Technology MIC2075-2YM, Power Distribution Switch High Side, 160mΩ, 2.7 V min. 8-Pin, SOIC Microchip Technology 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 2.7 V 500mA -40 °C
Microchip Technology MIC2025-1YMM, USB Power Switch High Side, 160mΩ, 2.7 V min. 8-Pin, MSOP Microchip Technology 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 2.7 V 500mA -40 °C
Microchip Technology MIC2025-1YM, USB Power Switch High Side, 160mΩ, 2.7 V min. 8-Pin, SOIC Microchip Technology 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 2.7 V 500mA -40 °C
Microchip Technology MIC2505-2YM, Power Distribution Switch, High Side, 75mΩ, 3 V min. 8-Pin, SOIC Microchip Technology High Side 1 75mΩ - Surface Mount SOIC 8 4A 4.93 x 3.94 x 1.48mm 4.93mm 3.94mm 1.48mm 7.5 V +85 °C 3 V 2A -40 °C
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