Power Switch ICs

Power switch ICs (integrated circuits) are electronic components that control the power for another device within the circuit. They are used to enable or disable a power rail. Power switches are often used to control the current to a USB connector to prevent short-circuiting. These switches provide protection for circuits which may experience overload or high operating temperatures. Load switches are active whenever the power is switched on and therefore offer low leakage currents. Load switches are often used instead of a MOSFET as they offer additional protection from a smaller package.

When choosing a power switch it is important to consider the current limit levels. These levels can be fixed or adjustable depending on the device. Power switch ICs come in a standard semiconductor package, such as a SOT-21, SSOP and PDIP.

Where are they used?

  • USB ports (e.g. USB-C)
  • Desktop computers
  • Docking stations
  • General switching or linear applications

High-side and Low-side Switches

High-side switches sit between the positive power line and the load. Low-side switches sit between the load and the ground. High-side switches are more commonly used in heavy-load applications where a short circuit is more likely at the ground. Low-side switches are often cheaper and ideal for when load is controlled through a high-speed PWM. There are also H-bridge switch ICs which require both high-side and low-side switches.

What is an Intelligent Power Switch (IPS)?

Intelligent power switches are ICs that are largely used in the automotive applications. They also play a big role in the “Smart Home” products. An Intelligent power switch combines multiple actions into a single process. They are used in PAC (Programmable Automation Controller), CNC (Computer Numerical Control) & PLC (Programmable Logic Controller), robotics, agricultural systems, security systems & used in green energy, like wind turbines.


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Description Price Power Switch Topology Power Switch Type Switch On Resistance Number of Channels Maximum Operating Supply Voltage Maximum Operating Current Number of Outputs Number of Inputs Power Rating Protection Features Mounting Type Package Type Pin Count Maximum Operating Temperature
RS Stock No. 919-6595
Mfr. Part No.BTS711L1XUMA1
BrandInfineon
£2.299
Each (On a Reel of 1000)
Units
- High Speed 0.165Ω - 16 V 7.5A 4 - - - Surface Mount DSO 20 +150 °C
RS Stock No. 445-2326
Mfr. Part No.BTS711L1XUMA1
BrandInfineon
£4.23
Each
Units
- High Speed 0.165Ω - 16 V 7.5A 4 - - - Surface Mount DSO 20 +150 °C
RS Stock No. 165-8024
Mfr. Part No.BTS442E2E3062ABUMA1
BrandInfineon
£3.897
Each (On a Reel of 1000)
Units
High Side High Side Switch 35mΩ - 42 V 21A 1 - - - Surface Mount TO-263 5 +150 °C
RS Stock No. 911-1017
Mfr. Part No.BSP452HUMA1
BrandInfineon
£0.811
Each (On a Reel of 4000)
Units
- - - - - - - - - - Surface Mount SOT-223 3 + Tab +150 °C
RS Stock No. 823-5576
Mfr. Part No.BSP452HUMA1
BrandInfineon
£1.616
Each (In a Pack of 5)
Units
- - - - - - - - - - Surface Mount SOT-223 3 + Tab +150 °C
RS Stock No. 898-6965
Mfr. Part No.BTS442E2E3062ABUMA1
BrandInfineon
£5.42
Each (In a Pack of 2)
Units
High Side High Side Switch 35mΩ - 42 V 21A 1 - - - Surface Mount TO-263 5 +150 °C
RS Stock No. 919-6655
Mfr. Part No.BTS428L2ATMA1
BrandInfineon
£1.338
Each (On a Reel of 2500)
Units
High Side High Side Switch 120mΩ - 41 V 5.8A 1 - - - Surface Mount TO-252 5 +150 °C
RS Stock No. 753-2876
Mfr. Part No.BTS428L2ATMA1
BrandInfineon
£2.46
Each
Units
High Side High Side Switch 120mΩ - 41 V 5.8A 1 - - - Surface Mount TO-252 5 +150 °C
RS Stock No. 752-8274
Mfr. Part No.BTS5242-2L
BrandInfineon
£2.82
Each
Units
High Side High Side Switch 48mΩ - 28 V 6A 4 - - - Surface Mount SOIC 12 +150 °C
RS Stock No. 753-3131
Mfr. Part No.ITS724GFUMA1
BrandInfineon
£3.36
Each
Units
High Side High Side Switch 90mΩ - 40 V 7.3A 4 - - - Surface Mount SOIC 20 +85 °C
RS Stock No. 919-8727
Mfr. Part No.ITS724GFUMA1
BrandInfineon
£1.871
Each (On a Reel of 1000)
Units
High Side High Side Switch 90mΩ - 40 V 7.3A 4 - - - Surface Mount SOIC 20 +85 °C
RS Stock No. 110-9105
Mfr. Part No.BTS611L1E3128ABUMA1
BrandInfineon
£2.756
Each (In a Pack of 5)
Units
High Side High Side Power Switch 400mΩ - 43 V 4.4A 2 - - - Surface Mount TO-263 7 +150 °C
RS Stock No. 827-5265
Mfr. Part No.BSP75NHUMA1
BrandInfineon
£0.938
Each (In a Pack of 25)
Units
Low Side Low Side Switch 550mΩ - 60 V 0.7A 1 - - - Surface Mount SOT-223 3 + Tab +150 °C
RS Stock No. 919-6692
Mfr. Part No.ITS4141NHUMA1
BrandInfineon
£0.837
Each (On a Reel of 4000)
Units
High Side High Side Switch 320mΩ - 48 V 0.7A 1 - - - Surface Mount SOT-223 3 + Tab +85 °C
RS Stock No. 166-1196
Mfr. Part No.BTS611L1E3128ABUMA1
BrandInfineon
£2.043
Each (On a Reel of 1000)
Units
High Side High Side Power Switch 400mΩ - 43 V 4.4A 2 - - - Surface Mount TO-263 7 +150 °C
RS Stock No. 753-3093
Mfr. Part No.ITS4141NHUMA1
BrandInfineon
£1.47
Each (In a Pack of 2)
Units
High Side High Side Switch 320mΩ - 48 V 0.7A 1 - - - Surface Mount SOT-223 3 + Tab +85 °C
RS Stock No. 124-8771
Mfr. Part No.BSP75NHUMA1
BrandInfineon
£0.505
Each (On a Reel of 4000)
Units
Low Side Low Side Switch 550mΩ - 60 V 0.7A 1 - - - Surface Mount SOT-223 3 + Tab +150 °C
RS Stock No. 110-7725
Mfr. Part No.ITS4200SMEPHUMA1
BrandInfineon
£1.149
Each (In a Pack of 10)
Units
High Side High Side Power Switch 320mΩ - 45 V - 1 - - - Surface Mount SOT-223 3 + Tab +125 °C
RS Stock No. 110-7744
Mfr. Part No.BTS723GWXUMA1
BrandInfineon
£4.483
Each (In a Pack of 4)
Units
High Side High Side Power Switch 210mΩ - 58 V 4.2A 2 - - - Surface Mount DSO-14-37 14 +150 °C
RS Stock No. 124-8773
Mfr. Part No.BTS4140NHUMA1
BrandInfineon
£0.532
Each (On a Reel of 4000)
Units
High Side High Side Switch 3000mΩ - 60 V 0.2A 1 - - - Surface Mount SOT-223 3 + Tab +150 °C