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. 761-3616
Mfr. Part No.FDC6331L
TWD19.40
Each (In a Pack of 5)
units
- Integrated Load Switch 0.1Ω - 8 V 2.8A 2 - 0.7W - Surface Mount SOT-23 6 +150 °C
RS Stock No. 145-8901
Mfr. Part No.VN751STR
TWD42.90
Each (On a Reel of 2500)
units
High Side Driver 180mΩ - 36 V 2.5A 1 - - - Surface Mount SOIC 8 +150 °C
RS Stock No. 862-9195
Mfr. Part No.FSUSB74MPX
TWD52.20
Each (In a Pack of 5)
units
- USB - 4.4 V - 1 - - - Surface Mount MLP 16 +85 °C
RS Stock No. 919-6696
Mfr. Part No.ISP772TFUMA1
BrandInfineon
TWD30.70
Each (On a Reel of 2500)
units
High Side High Side Switch 120mΩ - 16 V 3.1A 1 - - - Surface Mount SOIC 8 +85 °C
RS Stock No. 919-6646
Mfr. Part No.BTS3410GXUMA1
BrandInfineon
TWD22.90
Each (On a Reel of 2500)
units
Low Side Low Side Switch 480mΩ - 10 V 1.65A 2 - - - Surface Mount SOIC 8 +150 °C
RS Stock No. 808-8944
Mfr. Part No.FPF2110
TWD31.80
Each (In a Pack of 10)
units
- MOSFET Load 200mΩ - 5.5 V 800mA 1 - 667mW - Surface Mount SOT-23 5 +85 °C
RS Stock No. 828-7668
Mfr. Part No.AP2553W6-7
TWD13.10
Each (In a Pack of 10)
units
- Power Switch 135mΩ - 5.5 V 2.1A 1 - 340mW - Surface Mount SOT-26 6 +85 °C
RS Stock No. 793-1415
Mfr. Part No.VNS3NV04DPTR-E
TWD63.00
Each (In a Pack of 5)
units
- OMNIFET: Fully Autoprotected Power MOSFET - - 40 V 3.5A - - - - Surface Mount SOIC 8 -
RS Stock No. 919-8718
Mfr. Part No.ITS4880RCUMA1
BrandInfineon
TWD157.80
Each (On a Reel of 800)
units
High Side High Side Switch 320mΩ - 45 V 0.625A 8 - - - Surface Mount SOIC 36 +85 °C
RS Stock No. 919-8733
Mfr. Part No.BSP752RXUMA2
BrandInfineon
TWD28.50
Each (On a Reel of 2500)
units
High Side High Side Switch 380mΩ - 52 V 1.7A 1 - - - Surface Mount DSO 8 +150 °C
RS Stock No. 146-5653
Mfr. Part No.LNK606PG
TWD36.60
Each (In a Tube of 50)
units
- - - - - - - - - - Through Hole DIPC 7 +150 °C
RS Stock No. 751-2982
Mfr. Part No.AP2280-1WG-7
TWD16.80
Each (In a Pack of 25)
units
High Side High Side Switch 250mΩ - 6 V 2A 1 - - - Surface Mount SOT-25 5 +85 °C
RS Stock No. 752-8230
Mfr. Part No.BSP772TXUMA1
BrandInfineon
TWD65.00
Each (In a Pack of 2)
units
High Side High Side Switch 120mΩ - 16 V 3.1A 1 - - - Surface Mount SOIC 8 +150 °C
RS Stock No. 166-0814
Mfr. Part No.BTS50301EJAXUMA1
BrandInfineon
TWD24.90
Each (On a Reel of 2500)
units
High Side High Side Power Switch 60mΩ - 28 V 5A 1 - - - Surface Mount DSO-8-43 8 +150 °C
RS Stock No. 165-4277
Mfr. Part No.MIC2026-2YM-TR
BrandMicrochip
TWD27.10
Each (On a Reel of 2500)
units
High Side - 170mΩ - 5.5 V - 2 - - - Surface Mount SOIC 8 +85 °C
RS Stock No. 165-8211
Mfr. Part No.BTS3405GXUMA1
BrandInfineon
TWD26.20
Each (On a Reel of 2500)
units
Low Side Smart Low-Side 1.9Ω - 10 V 350mA 1 - - - Surface Mount SOIC 8 +150 °C
RS Stock No. 862-9205
Mfr. Part No.FSUSB74UMX
TWD31.60
Each (In a Pack of 5)
units
- USB - 4.4 V - 1 - - - Surface Mount UMLP 16 +85 °C
RS Stock No. 752-8227
Mfr. Part No.BSP752TXUMA1
BrandInfineon
TWD60.00
Each (In a Pack of 2)
units
High Side High Side Switch 380mΩ - 16 V 1.7A 1 - - - Surface Mount SOIC 8 +150 °C
RS Stock No. 753-2822
Mfr. Part No.BSP762TXUMA1
BrandInfineon
TWD66.50
Each (In a Pack of 2)
units
High Side High Side Switch 200mΩ - 16 V 2.4A 1 - - - Surface Mount SOIC 8 +150 °C
RS Stock No. 919-6611
Mfr. Part No.BTS500551TMAATMA1
BrandInfineon
TWD101.30
Each (On a Reel of 1000)
units
High Side High Side Switch 17mΩ - 34 V 70A 1 - - - Surface Mount TO-220 7 +150 °C