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. 862-9094
Mfr. Part No.FSL117MRIN
SGD2.006
Each (In a Pack of 5)
units
- PWM Controller 11Ω - - 0.8A 1 - 10W - Through Hole PDIP 8 +125 °C
RS Stock No. 880-5553
Mfr. Part No.VNN3NV04PTR-E
SGD1.48
Each (In a Pack of 10)
units
- - - - - - - - - - Surface Mount SOT-223 3 + Tab -
RS Stock No. 753-3071
Mfr. Part No.ISP452HUMA1
BrandInfineon
SGD3.22
Each (In a Pack of 2)
units
High Side High Side Switch 0.4Ω - 40 V 0.7A 1 - - - Surface Mount SOT-223 3 + Tab +85 °C
RS Stock No. 123-5392
Mfr. Part No.LNK605DG
SGD1.512
Each (In a Pack of 5)
units
- - - - - - - - - - Surface Mount SOIC 7 +150 °C
RS Stock No. 809-0830
Mfr. Part No.FDC6323L
SGD0.707
Each (On a Tape of 20)
units
- Integrated Load - - 8 V 1A 2 - 0.7W - Surface Mount SOT-23 6 +150 °C
RS Stock No. 124-8772
Mfr. Part No.BSP742RXUMA1
BrandInfineon
SGD1.069
Each (On a Reel of 2500)
units
High Side High Side Switch 700mΩ - 34 V 0.4A 1 - - - Surface Mount DSO 8 +150 °C
RS Stock No. 445-2326
Mfr. Part No.BTS711L1XUMA1
BrandInfineon
SGD9.01
Each
units
- High Speed Switch 0.165Ω - 16 V 7.5A 4 - - - Surface Mount DSO 20 +150 °C
RS Stock No. 124-8773
Mfr. Part No.BTS4140NHUMA1
BrandInfineon
SGD0.999
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
RS Stock No. 917-5504
Mfr. Part No.FPF2109
SGD1.55
Each (In a Pack of 10)
units
- - - - - - 1 - - - Surface Mount SOT-23 5 +125 °C
RS Stock No. 165-5294
Mfr. Part No.VN5160STR-E
SGD0.938
Each (On a Reel of 2500)
units
- - - - - - - - - - - - - -
RS Stock No. 162-8784
Mfr. Part No.TPS2561DRCT
SGD3.307
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
SGD3.646
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. 911-1017
Mfr. Part No.BSP452HUMA1
BrandInfineon
SGD1.311
Each (On a Reel of 4000)
units
- - - - - - - - - - Surface Mount SOT-223 3 + Tab +150 °C
RS Stock No. 165-4087
Mfr. Part No.MIC2026-1YM
BrandMicrochip
SGD1.365
Each (In a Tube of 95)
units
High Side USB Power 90mΩ - 5.5 V 0.9A 4 - - - Surface Mount SOIC 8 +85 °C
RS Stock No. 862-9148
Mfr. Part No.FSL336LRN
SGD2.258
Each (In a Pack of 5)
units
- Integrate Pulse Width Modulator - - - 1.8A 1 - 7.08W - Through Hole PDIP 7 -
RS Stock No. 753-3096
Mfr. Part No.ISP772TFUMA1
BrandInfineon
SGD3.02
Each (In a Pack of 2)
units
High Side High Side Switch 120mΩ - 16 V 3.1A 1 - - - Surface Mount SOIC 8 +85 °C
RS Stock No. 827-5259
Mfr. Part No.BSP742RIXUMA1
BrandInfineon
SGD2.415
Each (In a Pack of 20)
units
High Side High Side Switch 700mΩ - 34 V 0.4A 1 - - - Surface Mount DSO 8 +150 °C
RS Stock No. 126-7232
Mfr. Part No.AVS12CB
SGD4.27
Each
units
- - - - - - - - - - Through Hole TO-220AB 3 +70 °C
RS Stock No. 178-5044
Mfr. Part No.TLE6220GPAUMA2
BrandInfineon
SGD5.061
Each (On a Reel of 800)
units
Low Side Low Side Switch 0.7Ω - 7 V 3A 4 - - - Surface Mount DSO 20 +150 °C
RS Stock No. 919-6696
Mfr. Part No.ISP772TFUMA1
BrandInfineon
SGD1.33
Each (On a Reel of 2500)
units
High Side High Side Switch 120mΩ - 16 V 3.1A 1 - - - Surface Mount SOIC 8 +85 °C