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. 922-8294
Mfr. Part No.AP2151SG-13
HK$2.562
Each (On a Reel of 2500)
units
High Side High Side Switch 115mΩ - 5.5 V 500mA 2 - - - Surface Mount SOP 8 +85 °C
RS Stock No. 751-2957
Mfr. Part No.AP2151SG-13
HK$6.826
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. 165-8353
Mfr. Part No.AP2337SA-7
HK$1.082
Each (On a Reel of 3000)
units
High Side - 170mΩ - 5.5 V 1.9A 1 - - - Surface Mount SOT-23 3 +85 °C
RS Stock No. 921-0470
Mfr. Part No.AP2337SA-7
HK$2.814
Each (In a Pack of 30)
units
High Side - 170mΩ - 5.5 V 1.9A 1 - - - Surface Mount SOT-23 3 +85 °C
RS Stock No. 122-3268
Mfr. Part No.ZXMS6001N3TA
HK$4.608
Each (On a Reel of 1000)
units
- - 675mΩ - 6 V - 1 - 1.5W - Surface Mount SOT-223 3 + Tab +150 °C
RS Stock No. 669-7528
Mfr. Part No.BSP75GTA
HK$10.294
Each (In a Pack of 5)
units
Low Side Low Side Switch 0.52Ω - 60 V 1.4A 1 - - - Surface Mount SOT-223 3 + Tab +150 °C
RS Stock No. 146-4910
Mfr. Part No.AP22804ASN-7
HK$4.599
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. 751-2976
Mfr. Part No.AP2171FMG-7
HK$3.969
Each (In a Pack of 25)
units
High Side High Side Switch 110mΩ - 5.5 V 1A 2 - - - Surface Mount DFN-2018 6 +85 °C
RS Stock No. 823-3179
Mfr. Part No.ZXMS6001N3TA
HK$7.55
Each (In a Pack of 10)
units
- - 675mΩ - 6 V - 1 - 1.5W - Surface Mount SOT-223 3 + Tab +150 °C
RS Stock No. 921-0414
Mfr. Part No.AP2152SG-13
HK$8.70
Each (In a Pack of 5)
units
High Side - 160mΩ - 5.5 V 1A 2 - - - Surface Mount SOIC 8 +85 °C
RS Stock No. 921-0442
Mfr. Part No.AP2191DWG-7
HK$3.392
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. 206-0258
Mfr. Part No.AP22913W6-7
HK$2.94
Each (In a Pack of 25)
units
High Side Load Switche 100mΩ 1 5.5 V 2A - - - - - SOT-26 6 -
RS Stock No. 206-0257
Mfr. Part No.AP22913W6-7
HK$1.676
Each (On a Reel of 3000)
units
High Side Load Switche 100mΩ 1 5.5 V 2A - - - - - SOT-26 6 -
RS Stock No. 922-8298
Mfr. Part No.AP2156SG-13
HK$3.203
Each (On a Reel of 2500)
units
High Side High Side Switch 135mΩ - 5.5 V 500mA 2 - - - Surface Mount SOP 8 +85 °C
RS Stock No. 751-2982
Mfr. Part No.AP2280-1WG-7
HK$4.462
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. 165-8346
Mfr. Part No.AP2511MP-13
HK$1.561
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. 824-5490
Mfr. Part No.AP2152MPG-13
HK$13.21
Each (In a Pack of 5)
units
High Side - 150mΩ - 5.5 V 1A 2 - - - Surface Mount MSOP 8 +85 °C
RS Stock No. 206-0253
Mfr. Part No.AP22615BWU-7
HK$6.847
Each (In a Pack of 25)
units
High Side Load Switche 50mΩ 1 5.5 V 3A - - - - - TSOT25 6 -
RS Stock No. 921-0492
Mfr. Part No.AP2553AW6-7
HK$3.024
Each (In a Pack of 10)
units
High Side - 135mΩ - 5.5 V 2542mA 1 - - - Surface Mount SOT-26 6 +85 °C
RS Stock No. 146-4720
Mfr. Part No.AP22804AW5-7
HK$2.111
Each (On a Reel of 3000)
units
High Side - 65mΩ - 2.4 V 3.3A 1 - - - Surface Mount SOT25 5 +85 °C