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 Stock No. 905-4652
Mfr. Part No.1304
PHP269.29
Each
units
USB - - - Panel Mount - - 500mA 30 x 12.5 x 8mm 30mm 12.5mm 8mm 4.2 V -
RS Stock No. 162-4887
Mfr. Part No.TPS2020D
PHP74.32
Each (In a Tube of 75)
units
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 Stock No. 462-6123
Mfr. Part No.TPS2020D
PHP183.06
Each
units
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 Stock No. 170-9002
Mfr. Part No.AP2182ASG-13
PHP22.525
Each (On a Reel of 2500)
units
Low Side 2 130mΩ Internally Limited Surface Mount SOIC 8 2.4A 4.95 x 3.95 x 1.5mm 4.95mm 3.95mm 1.5mm 5.5 V +85 °C
RS Stock No. 662-2413
Mfr. Part No.TPS2021D
PHP102.664
Each (In a Pack of 5)
units
High Side, USB Power Distribution 4 33mΩ 725 mW Surface Mount SOIC 8 0.9A 4.9 x 3.91 x 1.58mm 4.9mm 3.91mm 1.58mm 5.5 V +85 °C
RS Stock No. 146-1247
Mfr. Part No.MAX893LESA+
BrandMaxim
PHP115.13
Each (In a Tube of 100)
units
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 Stock No. 921-0492
Mfr. Part No.AP2553AW6-7
PHP27.124
Each (In a Pack of 10)
units
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 Stock No. 921-0433
Mfr. Part No.AP2182ASG-13
PHP28.552
Each (In a Pack of 10)
units
Low Side 2 130mΩ Internally Limited Surface Mount SOIC 8 2.4A 4.95 x 3.95 x 1.5mm 4.95mm 3.95mm 1.5mm 5.5 V +85 °C
RS Stock No. 910-1868
Mfr. Part No.MIC2545A-1YM
BrandMicrochip
PHP162.415
Each (In a Pack of 2)
units
High Side, USB Power Distribution - - Internally Limited Surface Mount SOP 8 3A 5 x 3.99 x 1.63mm 5mm 3.99mm 1.63mm 5.5 V +85 °C
RS Stock No. 165-8453
Mfr. Part No.AP2553AW6-7
PHP23.988
Each (On a Reel of 3000)
units
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 Stock No. 162-7135
Mfr. Part No.TPS2021D
PHP74.32
Each (In a Tube of 75)
units
High Side, USB Power Distribution 4 33mΩ 725 mW Surface Mount SOIC 8 0.9A 4.9 x 3.91 x 1.58mm 4.9mm 3.91mm 1.58mm 5.5 V +85 °C
RS Stock No. 921-0445
Mfr. Part No.AP2191SG-13
PHP50.243
Each (In a Pack of 10)
units
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 Stock No. 165-8558
Mfr. Part No.AP2191SG-13
PHP39.624
Each (On a Reel of 2500)
units
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 Stock No. 162-7142
Mfr. Part No.TPS2065D
PHP59.759
Each (In a Tube of 75)
units
High Side, USB Power Distribution 4 70mΩ 585.82 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 Stock No. 145-9400
Mfr. Part No.MIC2545A-1YM
BrandMicrochip
PHP92.162
Each (In a Tube of 95)
units
High Side, USB Power Distribution - - Internally Limited Surface Mount SOP 8 3A 5 x 3.99 x 1.63mm 5mm 3.99mm 1.63mm 5.5 V +85 °C
RS Stock No. 662-2482
Mfr. Part No.TPS2065D
PHP136.286
Each (In a Pack of 5)
units
High Side, USB Power Distribution 4 70mΩ 585.82 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 Stock No. 732-8106
Mfr. Part No.MAX893LESA+
BrandMaxim
PHP109.69
Each
units
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 Stock No. 817-5840
Mfr. Part No.BQ24195RGET
PHP219.18
Each
units
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 Stock No. 122-2931
Mfr. Part No.AP2156MPG-13
PHP20.082
Each (On a Reel of 2500)
units
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 Stock No. 160-2561
Mfr. Part No.ADP194ACBZ-R7
PHP28.095
Each (On a Reel of 3000)
units
High Side 1 120mΩ - Surface Mount WLCSP 4 - 0.8 x 0.8 x 0.33mm 0.8mm 0.8mm 0.33mm 3.6 V +85 °C
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