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. 166-0897
Mfr. Part No.BTS723GWXUMA1
BrandInfineon
£2.09
Each (On a Reel of 2500)
Units
High Side High Side Power Switch 210mΩ - 58 V 4.2A 2 - - - Surface Mount DSO-14-37 14 +150 °C
RS Stock No. 110-7725
Mfr. Part No.ITS4200SMEPHUMA1
BrandInfineon
£0.978
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. 827-5322
Mfr. Part No.BTS4140NHUMA1
BrandInfineon
£0.871
Each (In a Pack of 20)
Units
High Side High Side Switch 3000mΩ - 60 V 0.2A 1 - - - Surface Mount SOT-223 3 + Tab +150 °C
RS Stock No. 747-0986
Mfr. Part No.NCP380HMUAJAATBG
£0.425
Each (In a Pack of 2)
Units
- - - - 5.5 V 2.1A 2 2 - - Surface Mount UDFN 6 +125 °C
RS Stock No. 752-8407
Mfr. Part No.ITS4140NHUMA1
BrandInfineon
£1.02
Each (In a Pack of 5)
Units
High Side High Side Switch - 60 V 0.2A 1 - - - Surface Mount SOT-223 3 + Tab +85 °C
RS Stock No. 415-140
Mfr. Part No.BTS5215LAUMA1
BrandInfineon
£2.306
Each (In a Pack of 5)
Units
- High Speed 0.07Ω - 40 V - 2 - - - Surface Mount DSO 14 +150 °C
RS Stock No. 123-5539
Mfr. Part No.SEN013DG
£0.711
Each (In a Pack of 10)
Units
- High Voltage Control Signal - 3 - - - - - - Surface Mount SOIC 8 +125 °C
RS Stock No. 124-5357
Mfr. Part No.NCP380HMUAJAATBG
£0.157
Each (On a Reel of 3000)
Units
- - - - 5.5 V 2.1A 2 2 - - Surface Mount UDFN 6 +125 °C
RS Stock No. 669-7528
Mfr. Part No.BSP75GTA
£0.878
Each (In a Pack of 5)
Units
Low Side Low Side Switch 0.52Ω - 60 V 1.4A 1 - - - Surface Mount SOT-223 3 + Tab +150 °C
RS Stock No. 146-2432
Mfr. Part No.SEN013DG
£0.518
Each (In a Tube of 100)
Units
- High Voltage Control Signal - 3 - - - - - - Surface Mount SOIC 8 +125 °C
RS Stock No. 911-1027
Mfr. Part No.BTS5215LAUMA1
BrandInfineon
£1.243
Each (On a Reel of 1000)
Units
- High Speed 0.07Ω - 40 V - 2 - - - Surface Mount DSO 14 +150 °C
RS Stock No. 919-6686
Mfr. Part No.ISP742RIFUMA1
BrandInfineon
£0.496
Each (On a Reel of 2500)
Units
High Side High Side Switch 700mΩ - 16 V 0.4A 1 - - - Surface Mount SOIC 8 +85 °C
RS Stock No. 753-3080
Mfr. Part No.ISP742RIFUMA1
BrandInfineon
£1.07
Each (In a Pack of 2)
Units
High Side High Side Switch 700mΩ - 16 V 0.4A 1 - - - Surface Mount SOIC 8 +85 °C
RS Stock No. 922-7908
Mfr. Part No.BSP75GTA
£0.447
Each (On a Reel of 1000)
Units
Low Side Low Side Switch 0.52Ω - 60 V 1.4A 1 - - - Surface Mount SOT-223 3 + Tab +150 °C
RS Stock No. 919-6633
Mfr. Part No.ITS4140NHUMA1
BrandInfineon
£0.497
Each (On a Reel of 4000)
Units
High Side High Side Switch - 60 V 0.2A 1 - - - Surface Mount SOT-223 3 + Tab +85 °C
RS Stock No. 146-5620
Mfr. Part No.LNK564PN
£0.534
Each (In a Tube of 50)
Units
- Off Lineer 88Ω - - 375mA 1 - 3W Over-Temperature Through Hole DIPB 8 +150 °C
RS Stock No. 165-6888
Mfr. Part No.BTS3046SDLATMA1
BrandInfineon
£0.729
Each (On a Reel of 2500)
Units
Low Side Low Side Switch 50mΩ - 60 V 3.6A 1 - - - Surface Mount TO-252 3 +150 °C
RS Stock No. 165-8041
Mfr. Part No.BSP76E6433HUMA1
BrandInfineon
£0.441
Each (On a Reel of 4000)
Units
Low Side Low Side Switch 480mΩ - 10 V 1.4A 1 - - - Surface Mount SOT-223 3 + Tab +150 °C
RS Stock No. 826-8235
Mfr. Part No.BTS721L1XUMA1
BrandInfineon
£4.99
Each
Units
- - - - - - - - - - Surface Mount DSO 20 -
RS Stock No. 165-4313
Mfr. Part No.MIC2090-1YM5-TR
BrandMicrochip
£0.114
Each (On a Reel of 3000)
Units
High Side MOSFET 1300mΩ - 5.5 V - 1 - - - Surface Mount SOT-23 5 +125 °C