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. 921-0442
Mfr. Part No.AP2191DWG-7
SGD0.586
Each (In a Pack of 20)
units
High Side - 115mΩ - 5.5 V 2.6A 1 - - - Surface Mount SOT-25 5 +85 °C
RS Stock No. 751-2985
Mfr. Part No.AP2280-2WG-7
SGD0.796
Each (On a Tape of 25)
units
High Side High Side Switch 250mΩ - 6 V 2A 1 - - - Surface Mount SOT-25 5 +85 °C
RS Stock No. 165-8542
Mfr. Part No.AP2191DWG-7
SGD0.189
Each (On a Reel of 3000)
units
High Side - 115mΩ - 5.5 V 2.6A 1 - - - Surface Mount SOT-25 5 +85 °C
RS Stock No. 751-2973
Mfr. Part No.AP2171WG-7
SGD0.638
Each (In a Pack of 10)
units
High Side High Side Switch 115mΩ - 5.5 V 1A 1 - - - Surface Mount SOT-25 5 +85 °C
RS Stock No. 169-0659
Mfr. Part No.AP2171WG-7
SGD0.198
Each (On a Reel of 3000)
units
High Side High Side Switch 115mΩ - 5.5 V 1A 1 - - - Surface Mount SOT-25 5 +85 °C
RS Stock No. 921-0414
Mfr. Part No.AP2152SG-13
SGD1.524
Each (In a Pack of 5)
units
High Side - 160mΩ - 5.5 V 1A 2 - - - Surface Mount SOIC 8 +85 °C
RS Stock No. 122-3268
Mfr. Part No.ZXMS6001N3TA
SGD0.722
Each (On a Reel of 1000)
units
- - 675mΩ - 6 V - 1 - 1.5W - Surface Mount SOT-223 3 + Tab +150 °C
RS Stock No. 122-2931
Mfr. Part No.AP2156MPG-13
SGD0.473
Each (On a Reel of 2500)
units
High Side - 160mΩ - 5.5 V 1A 2 - - - Surface Mount MSOP 8 +85 °C
RS Stock No. 822-8827
Mfr. Part No.AP2280-2FMG-7
SGD0.832
Each (In a Pack of 20)
units
- Load 250mΩ - 6 V 2A 1 - 1.26W - Surface Mount DFN-2018 6 +85 °C
RS Stock No. 146-4720
Mfr. Part No.AP22804AW5-7
SGD0.322
Each (On a Reel of 3000)
units
High Side - 65mΩ - 2.4 V 3.3A 1 - - - Surface Mount SOT25 5 +85 °C
RS Stock No. 182-6882
Mfr. Part No.DML3009LDC-7
SGD0.436
Each (On a Reel of 3000)
units
- Load 9mΩ - 13.5 V 20A 1 - - - Surface Mount V-DFN3030 12 +85 °C
RS Stock No. 206-0252
Mfr. Part No.AP22615BWU-7
SGD0.638
Each (On a Reel of 3000)
units
High Side Load Switche 50mΩ 1 5.5 V 3A - - - - - TSOT25 6 -
RS Stock No. 165-8452
Mfr. Part No.AP2552FDC-7
SGD0.542
Each (On a Reel of 3000)
units
Low Side - 150mΩ - 5.5 V 2542mA 1 - - - Surface Mount U-DFN2020 6 +85 °C
RS Stock No. 921-0455
Mfr. Part No.AP22802AW5-7
SGD0.446
Each (In a Pack of 50)
units
- Distribution 60mΩ - 5.5 V 2A 1 - - - Surface Mount SOT-25 5 +85 °C
RS Stock No. 122-1431
Mfr. Part No.ZXMS6004SGTA
SGD0.603
Each (On a Reel of 1000)
units
Low Side Low Side Switch 500mΩ - 5.5 V 1.3A 1 - - - Surface Mount SOT-223 3 + Tab +125 °C
RS Stock No. 921-0473
Mfr. Part No.AP2501M8-13
SGD0.573
Each (In a Pack of 30)
units
Low Side - 135mΩ - 5.5 V 4.6A 2 - - - Surface Mount MSOP 8 +85 °C
RS Stock No. 146-4781
Mfr. Part No.AP22804BSN-7
SGD0.821
Each (In a Pack of 10)
units
High Side - 65mΩ - 2.4 V 3.3A 1 - - - Surface Mount U-DFN2020 5 + Tab +85 °C
RS Stock No. 751-5385
Mfr. Part No.ZXMS6004DGTA
SGD1.816
Each (In a Pack of 5)
units
Low Side Low Side Switch 500mΩ - 5.5 V 1.3A 2 - - - Surface Mount SOT-223 3 + Tab +125 °C
RS Stock No. 922-8308
Mfr. Part No.AP2280-1WG-7
SGD0.356
Each (On a Reel of 3000)
units
High Side High Side Switch 250mΩ - 6 V 2A 1 - - - Surface Mount SOT-25 5 +85 °C
RS Stock No. 169-7472
Mfr. Part No.AP2142SG-13
SGD0.915
Each (On a Reel of 2500)
units
High Side - 160mΩ - 5.5 V 1A 2 - - - Surface Mount SOP 8 +85 °C