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. 169-0659
Mfr. Part No.AP2171WG-7
$0.23
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. 133-0738
Mfr. Part No.TPS259251DRCT
$2.142
Each (In a Pack of 5)
units
- - - - 13.8 V 5.7A 3 3 - - Surface Mount VSON 10 +85 °C
RS Stock No. 124-1410
Mfr. Part No.FPF2004
$0.637
Each (On a Reel of 3000)
units
- MOSFET Load 1.2Ω - 5.5 V 200mA 1 - 250mW - Surface Mount SC-70 5 +85 °C
RS Stock No. 812-0408
Mfr. Part No.TPS2511DGN
$2.15
Each (In a Pack of 10)
units
High Side - 120mΩ - 5.5 V 3330mA 1 - - - Surface Mount MSOP 8 +85 °C
RS Stock No. 146-5720
Mfr. Part No.TOP258EN
$3.335
Each (In a Tube of 48)
units
- Off Lineer 2.9Ω - - 6.88A 1 - 148W Over-Temperature Surface Mount ESIPC 7 +150 °C
RS Stock No. 165-4312
Mfr. Part No.MIC2005A-1YM6-TR
BrandMicrochip
$0.312
Each (On a Reel of 3000)
units
High Side USB Power 275mΩ - 5.5 V 0.9A 1 - - - Surface Mount SOT-23 6 +85 °C
RS Stock No. 751-2973
Mfr. Part No.AP2171WG-7
$0.534
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. 160-4567
Mfr. Part No.ADP195ACBZ-R7
$0.923
Each (On a Reel of 3000)
units
High Side High Side Switch - - 3.6 V 200mA 1 - - - Surface Mount WLCSP 4 +85 °C
RS Stock No. 145-4618
Mfr. Part No.FSL116HR
$1.239
Each (In a Tube of 50)
units
- Integrated PWM Controller 10Ω - 265 V 1A 1 - 14W - Through Hole PDIP 8 +105 °C
RS Stock No. 807-6064
Mfr. Part No.FSQ0465RSWDTU
$2.72
Each (In a Pack of 5)
units
- Quasi Resonant Converter 2.6Ω - 265 V 4A 1 - 48W - Through Hole TO-220F 6 +85 °C
RS Stock No. 162-8784
Mfr. Part No.TPS2561DRCT
$1.313
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
$2.586
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. 124-5357
Mfr. Part No.NCP380HMUAJAATBG
$0.378
Each (On a Reel of 3000)
units
- - - - 5.5 V 2.1A 2 2 - - Surface Mount UDFN 6 +125 °C
RS Stock No. 920-6547
Mfr. Part No.VNS3NV04DPTR-E
$1.671
Each (On a Reel of 2500)
units
- OMNIFET: Fully Autoprotected Power MOSFET - - 40 V 3.5A - - - - Surface Mount SOIC 8 -
RS Stock No. 110-6597
Mfr. Part No.E-L9823013TR
$4.87
Each (In a Pack of 2)
units
Low Side Low Side 1.5Ω - 50 V 0.5A 7 - - - Surface Mount SOIC 24 -
RS Stock No. 168-8915
Mfr. Part No.VNS3NV04DP-E
$2.049
Each (In a Tube of 100)
units
- OMNIFET: Fully Autoprotected Power MOSFET - - 40 V 3.5A - - - - Surface Mount SOIC 8 +150 °C
RS Stock No. 121-9890
Mfr. Part No.NCP45560IMNTWG-L
$1.10
Each (On a Reel of 3000)
units
- Load Management 5.1mΩ - 5.5 V - 1 - 3.49W - Surface Mount DFN 12 +85 °C
RS Stock No. 123-5539
Mfr. Part No.SEN013DG
$1.292
Each (In a Pack of 10)
units
- High Voltage Control Signal - 3 - - - - - - Surface Mount SOIC 8 +125 °C
RS Stock No. 753-2872
Mfr. Part No.BTS3410GXUMA1
BrandInfineon
$2.718
Each (In a Pack of 5)
units
Low Side Low Side Switch 480mΩ - 10 V 1.65A 4 - - - Surface Mount SOIC 8 +150 °C
RS Stock No. 145-5458
Mfr. Part No.FSQ0465RSWDTU
$2.31
Each (In a Tube of 50)
units
- Quasi Resonant Converter 2.6Ω - 265 V 4A 1 - 48W - Through Hole TO-220F 6 +85 °C