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. 880-5557
Mfr. Part No.VNN7NV04PTR-E
MYR5.429
Each (In a Pack of 10)
units
- - - - - - - - - - Surface Mount SOT-223 3 + Tab -
RS Stock No. 165-5490
Mfr. Part No.VNN7NV04PTR-E
MYR3.044
Each (On a Reel of 1000)
units
- OMNIFET: Fully Autoprotected Power MOSFET - - 40 V 6A - - - - Surface Mount SOT-223 3 + Tab -
RS Stock No. 168-6834
Mfr. Part No.VN340SP-E
MYR18.49
Each (In a Tube of 50)
units
High Side Solid State Relay 0.2Ω - 36 V 0.7A 4 - - - Surface Mount SOIC 10 +150 °C
RS Stock No. 920-8947
Mfr. Part No.L6376D
MYR31.208
Each (In a Tube of 31)
units
- - - - - 500mA 4 4 - - Surface Mount PowerSO 20 +85 °C
RS Stock No. 110-6370
Mfr. Part No.STMPS2161STR
MYR2.216
Each (In a Pack of 25)
units
High Side High Side Power Switch 200mΩ - 5.5 V 1A 1 - - - Surface Mount SOT-23 5 +85 °C
RS Stock No. 714-7884
Mfr. Part No.L6376D
MYR35.76
Each
units
- - - - - - 4 4 - - Surface Mount PowerSO 20 +85 °C
RS Stock No. 145-8757
Mfr. Part No.STMPS2161STR
MYR0.964
Each (On a Reel of 3000)
units
- - - - - - - - - - Surface Mount SOT-23 5 +85 °C
RS Stock No. 714-1170
Mfr. Part No.VN340SP-E
MYR23.89
Each
units
High Side High Side Solid State Relay 0.2Ω - 36 V 0.7A 4 - - - Surface Mount SOIC 10 +150 °C
RS Stock No. 877-3144
Mfr. Part No.VNS3NV04DP-E
MYR9.818
Each (In a Pack of 5)
units
- OMNIFET: Fully Autoprotected Power MOSFET - - 40 V 3.5A - - - - Surface Mount SOIC 8 +150 °C
RS Stock No. 189-1201
Mfr. Part No.TDE1798DP
MYR28.28
Each
units
- High Speed Switch - - 50 V 8mA 1 - - - Through Hole PDIP 8 +85 °C
RS Stock No. 920-6323
Mfr. Part No.TDE1798DP
MYR21.907
Each (In a Tube of 50)
units
- High Speed - - 50 V 8mA 1 - - - Through Hole PDIP 8 +85 °C
RS Stock No. 714-1161
Mfr. Part No.VN330SP-E
MYR27.07
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. 793-1415
Mfr. Part No.VNS3NV04DPTR-E
MYR7.486
Each (In a Pack of 5)
units
- OMNIFET: Fully Autoprotected Power MOSFET - - 40 V 3.5A - - - - Surface Mount SOIC 8 -
RS Stock No. 168-6831
Mfr. Part No.VN330SP-E
MYR20.94
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. 168-8915
Mfr. Part No.VNS3NV04DP-E
MYR6.663
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. 920-6547
Mfr. Part No.VNS3NV04DPTR-E
MYR4.454
Each (On a Reel of 2500)
units
- OMNIFET: Fully Autoprotected Power MOSFET - - 40 V 3.5A - - - - Surface Mount SOIC 8 -
RS Stock No. 880-5553
Mfr. Part No.VNN3NV04PTR-E
MYR3.87
Each (In a Pack of 10)
units
- - - - - - - - - - Surface Mount SOT-223 3 + Tab -
RS Stock No. 880-5415
Mfr. Part No.STMPS2151STR
MYR2.11
Each (In a Pack of 25)
units
High Side MOSFET 160mΩ - 5.5 V 0.5A 1 - - - Surface Mount SOT-23 5 +125 °C
RS Stock No. 168-6835
Mfr. Part No.VN340SPTR-E
MYR18.361
Each (On a Reel of 600)
units
- - - - - - 4 - - - Surface Mount PowerSO 10 -
RS Stock No. 165-5489
Mfr. Part No.VNN3NV04PTR-E
MYR2.609
Each (On a Reel of 1000)
units
- OMNIFET: Fully Autoprotected Power MOSFET - - 40 V 3.5A - - - - Surface Mount SOT-223 3 + Tab -