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. 146-5630
Mfr. Part No.LNK364PN
SGD1.271
Each (In a Tube of 50)
units
- Off Lineer 45Ω - - 750mA 1 - 6W Short Circuit Through Hole DIPB 8 +150 °C
RS Stock No. 793-1415
Mfr. Part No.VNS3NV04DPTR-E
SGD3.19
Each (In a Pack of 5)
units
- OMNIFET: Fully Autoprotected Power MOSFET - - 40 V 3.5A - - - - Surface Mount SOIC 8 -
RS Stock No. 920-6547
Mfr. Part No.VNS3NV04DPTR-E
SGD1.596
Each (On a Reel of 2500)
units
- OMNIFET: Fully Autoprotected Power MOSFET - - 40 V 3.5A - - - - Surface Mount SOIC 8 -
RS Stock No. 146-5724
Mfr. Part No.TOP258MN
SGD3.733
Each (In a Tube of 50)
units
- Off Lineer 2.9Ω - - 6.88A 1 - 92W Over-Temperature Through Hole SDIPC 10 +150 °C
RS Stock No. 168-8922
Mfr. Part No.STMPS2141STR
SGD0.562
Each (On a Reel of 3000)
units
High Side MOSFET 160mΩ - 5.5 V 0.5A 1 - - - Surface Mount SOT-23 5 +125 °C
RS Stock No. 880-5406
Mfr. Part No.STMPS2141STR
SGD1.413
Each (In a Pack of 10)
units
High Side MOSFET 160mΩ - 5.5 V 0.5A 1 - - - Surface Mount SOT-23 5 +125 °C
RS Stock No. 146-5693
Mfr. Part No.TNY280PN
SGD2.606
Each (In a Tube of 50)
units
- Off Lineer 4.5Ω - - 2550mA 1 - 28.5W Over-Temperature Through Hole DIPC 8 +150 °C
RS Stock No. 812-0408
Mfr. Part No.TPS2511DGN
SGD2.638
Each (In a Pack of 10)
units
High Side - 120mΩ - 5.5 V 3330mA 1 - - - Surface Mount MSOP 8 +85 °C
RS Stock No. 714-1161
Mfr. Part No.VN330SP-E
SGD10.97
Each
units
High Side High Side Solid State Relay 0.4Ω - 45 V 0.7A 4 - - - Surface Mount PowerSO 10 +150 °C
RS Stock No. 905-4624
Mfr. Part No.1689
SGD36.92
Each
units
- - - - - - - - - - Panel Mount - - -
RS Stock No. 168-6831
Mfr. Part No.VN330SP-E
SGD9.346
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. 162-7918
Mfr. Part No.TPS2511DGN
SGD2.461
Each (In a Tube of 80)
units
High Side - 120mΩ - 5.5 V 3330mA 1 - - - Surface Mount MSOP 8 +85 °C
RS Stock No. 862-9129
Mfr. Part No.FSL156MRBN
Brandonsemi
SGD2.73
Each (In a Pack of 5)
units
- PWM Controller 2.2Ω - - 1.6A 1 - 26W - Through Hole PDIP 8 +125 °C
RS Stock No. 145-4490
Mfr. Part No.FSDM311A
Brandonsemi
SGD1.405
Each (In a Tube of 50)
units
- - 14Ω - - - 1 - - - Through Hole PDIP 8 +85 °C
RS Stock No. 146-5632
Mfr. Part No.TNY274PN
SGD1.397
Each (In a Tube of 50)
units
- Off Lineer 48Ω - - 750mA 1 - 8.5W Over-Temperature Through Hole DIPC 8 +150 °C
RS Stock No. 145-4646
Mfr. Part No.FSL156MRBN
Brandonsemi
SGD1.911
Each (In a Tube of 50)
units
- PWM Controller 2.2Ω - - 1.6A 1 - 26W - Through Hole PDIP 8 +125 °C
RS Stock No. 671-0172
Mfr. Part No.FSDM311A
Brandonsemi
SGD1.60
Each (In a Pack of 5)
units
- - 14Ω - - - 1 - - - Through Hole PDIP 8 +85 °C
RS Stock No. 146-5658
Mfr. Part No.TNY277PN
SGD1.712
Each (In a Tube of 50)
units
- Off Lineer 13.5Ω - - 1650mA 1 - 18W Over-Temperature Through Hole DIPC 8 +150 °C
RS Stock No. 166-2786
Mfr. Part No.FSQ0365RLX
Brandonsemi
SGD1.197
Each (On a Reel of 1000)
units
- - 3.5Ω - 20 V 1.5A 1 - - - Surface Mount LSOP 8 +85 °C
RS Stock No. 670-9986
Mfr. Part No.FSQ0365RLX
Brandonsemi
SGD2.23
Each (In a Pack of 5)
units
- - 3.5Ω - 20 V 1.5A 1 - - - Surface Mount LSOP 8 +85 °C