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. 165-8557
Mfr. Part No.AP2145SG-13
€0.434
Each (On a Reel of 2500)
units
Low Side - 140mΩ - 5.5 V 1A 2 - - - Surface Mount SOIC 8 +85 °C
RS Stock No. 146-4710
Mfr. Part No.AP22814BW5-7
€0.287
Each (On a Reel of 3000)
units
High Side - 65mΩ - 2.4 V 3.8A 1 - - - Surface Mount SOT25 5 +85 °C
RS Stock No. 165-8558
Mfr. Part No.AP2191SG-13
€0.424
Each (On a Reel of 2500)
units
High Side - 115mΩ - 5.5 V 2.6A 2 - - - Surface Mount SOIC 8 +85 °C
RS Stock No. 122-3270
Mfr. Part No.AP2411MP-13
€0.082
Each (On a Reel of 2500)
units
High Side - 135mΩ - 5.5 V 2.85A 2 - - - Surface Mount MSOP 8 +85 °C
RS Stock No. 165-8345
Mfr. Part No.AP2501M8-13
€0.099
Each (On a Reel of 2500)
units
Low Side - 135mΩ - 5.5 V 4.6A 2 - - - Surface Mount MSOP 8 +85 °C
RS Stock No. 822-8833
Mfr. Part No.AP2401S-13
€0.503
Each (In a Pack of 25)
units
High Side - 135mΩ - 5.5 V 2.85A 2 - - - Surface Mount SOIC 8 +85 °C
RS Stock No. 146-4797
Mfr. Part No.AP22804BW5-7
€0.604
Each (In a Pack of 10)
units
High Side - 65mΩ - 2.4 V 3.3A 1 - - - Surface Mount SOT25 5 +85 °C
RS Stock No. 206-0255
Mfr. Part No.AP22815BWT-7
€0.722
Each (In a Pack of 25)
units
High Side Load Switche 50mΩ 1 5.5 V 3A - - - - - TSOT25 5 -
RS Stock No. 751-2957
Mfr. Part No.AP2151SG-13
€0.204
Each (In a Pack of 5)
units
High Side High Side Switch 115mΩ - 5.5 V 500mA 2 - - - Surface Mount SOP 8 +85 °C
RS Stock No. 206-0253
Mfr. Part No.AP22615BWU-7
€0.722
Each (In a Pack of 25)
units
High Side Load Switche 50mΩ 1 5.5 V 3A - - - - - TSOT25 6 -
RS Stock No. 182-7136
Mfr. Part No.DML3006LFDS-7
€0.168
Each (In a Pack of 25)
units
- Load 12.5mΩ - 13.5 V 10A 1 - - - Surface Mount V-DFN2020 8 +85 °C
RS Stock No. 165-8346
Mfr. Part No.AP2511MP-13
€0.204
Each (On a Reel of 2500)
units
High Side - 135mΩ - 5.5 V 4.6A 2 - - - Surface Mount MSOP 8EP 8 +85 °C
RS Stock No. 921-0414
Mfr. Part No.AP2152SG-13
€0.408
Each (In a Pack of 5)
units
High Side - 160mΩ - 5.5 V 1A 2 - - - Surface Mount SOIC 8 +85 °C
RS Stock No. 146-4720
Mfr. Part No.AP22804AW5-7
€0.097
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. 122-3271
Mfr. Part No.AP2411S-13
€0.106
Each (On a Reel of 2500)
units
- - 135mΩ - - - 2 - - - Surface Mount SOIC 8 +85 °C
RS Stock No. 169-7369
Mfr. Part No.AP2401MP-13
€0.18
Each (On a Reel of 2500)
units
High Side - 135mΩ - 5.5 V 2.85A 2 - - - Surface Mount MSOP 8 +85 °C
RS Stock No. 146-4711
Mfr. Part No.AP22814AM8-13
€0.213
Each (On a Reel of 2500)
units
High Side - 65mΩ - 2.4 V 3.8A 2 - - - Surface Mount MSOP 8 +85 °C
RS Stock No. 146-4777
Mfr. Part No.AP22814BW5-7
€0.633
Each (In a Pack of 10)
units
High Side - 65mΩ - 2.4 V 3.8A 1 - - - Surface Mount SOT25 5 +85 °C
RS Stock No. 169-7472
Mfr. Part No.AP2142SG-13
€0.544
Each (On a Reel of 2500)
units
High Side - 160mΩ - 5.5 V 1A 2 - - - Surface Mount SOP 8 +85 °C
RS Stock No. 122-2325
Mfr. Part No.AP2331SA-7
€0.122
Each (On a Reel of 3000)
units
High Side - 350mΩ - 5.2 V 0.5A 1 - - - Surface Mount SOT-23 3 +85 °C