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. 808-8966
Mfr. Part No.FPF2700MX
£1.968
Each (In a Pack of 5)
Units
- - - - 36 V 2A 1 1 - - Surface Mount SOIC 8 +125 °C
RS Stock No. 753-2876
Mfr. Part No.BTS428L2ATMA1
BrandInfineon
£2.16
Each
Units
High Side High Side Switch 120mΩ - 41 V 5.8A 1 - - - Surface Mount TO-252 5 +150 °C
RS Stock No. 162-8784
Mfr. Part No.TPS2561DRCT
£1.041
Each (On a Reel of 250)
Units
- Distribution 70mΩ - 6.5 V 2.5A 2 - 2.403W - Surface Mount SON 10 +85 °C
RS Stock No. 825-6765
Mfr. Part No.TPS2561DRCT
£1.742
Each (In a Pack of 5)
Units
- Distribution 70mΩ - 6.5 V 2.5A 2 - 2.403W - Surface Mount SON 10 +85 °C
RS Stock No. 919-6655
Mfr. Part No.BTS428L2ATMA1
BrandInfineon
£1.164
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. 671-0148
Mfr. Part No.FSCQ1565RTYDTU
£2.27
Each (In a Pack of 5)
Units
- - 0.53Ω - - - 1 - - - Through Hole TO-220F 5 +85 °C
RS Stock No. 166-2720
Mfr. Part No.FSCQ1565RTYDTU
£1.88
Each (In a Tube of 50)
Units
- - 0.53Ω - - - 1 - - - Through Hole TO-220F 5 +85 °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. 146-5664
Mfr. Part No.TNY277GN
£0.525
Each (In a Tube of 50)
Units
- Off Lineer 13.5Ω - - 1650mA 1 - 18W Over-Temperature Surface Mount SMDC 8 +150 °C
RS Stock No. 110-7746
Mfr. Part No.BTS432E2E3062ABUMA1
BrandInfineon
£3.843
Each (In a Pack of 4)
Units
High Side High Side Power Switch 70mΩ - 63 V 11A 1 - - - Surface Mount TO-263 5 +150 °C
RS Stock No. 166-1129
Mfr. Part No.BTS432E2E3062ABUMA1
BrandInfineon
£1.728
Each (On a Reel of 1000)
Units
High Side High Side Power Switch 70mΩ - 63 V 11A 1 - - - Surface Mount TO-263 5 +150 °C
RS Stock No. 919-8727
Mfr. Part No.ITS724GFUMA1
BrandInfineon
£1.627
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. 753-3131
Mfr. Part No.ITS724GFUMA1
BrandInfineon
£2.92
Each
Units
High Side High Side Switch 90mΩ - 40 V 7.3A 4 - - - Surface Mount SOIC 20 +85 °C
RS Stock No. 168-6831
Mfr. Part No.VN330SP-E
£3.978
Each (In a Tube of 50)
Units
High Side Solid State Relay 0.4Ω - 45 V 0.7A 4 - - - Surface Mount PowerSO 10 +150 °C
RS Stock No. 714-1161
Mfr. Part No.VN330SP-E
£4.68
Each
Units
High Side Solid State Relay 0.4Ω - 45 V 0.7A 4 - - - Surface Mount PowerSO 10 +150 °C
RS Stock No. 146-5697
Mfr. Part No.TOP256EN
£1.387
Each (In a Tube of 48)
Units
- Off Lineer 4.75Ω - - 4.08A 1 - 86W Over-Temperature Surface Mount eSIPC 7 +150 °C
RS Stock No. 146-5672
Mfr. Part No.TNY278GN
£1.285
Each (In a Tube of 50)
Units
- Off Lineer - - 1650mA 1 - 21.5W Over-Temperature Surface Mount SMDC 8 +150 °C
RS Stock No. 462-6117
Mfr. Part No.TPS2010AD
£1.86
Each (In a Pack of 5)
Units
- - - - 5.5 V 0.3A 1 1 - - Surface Mount SOIC 8 +85 °C
RS Stock No. 670-9999
Mfr. Part No.FSUSB30MUX
£0.426
Each (In a Pack of 5)
Units
- - 10Ω - - - 1 - - - Surface Mount MSOP 10 +85 °C
RS Stock No. 166-2527
Mfr. Part No.FSUSB30MUX
£0.16
Each (On a Reel of 4000)
Units
- - 10Ω - - - 1 - - - Surface Mount MSOP 10 +85 °C