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. 793-1403
Mfr. Part No.VNN1NV04PTR-E
kr 10,306
Each (In a Pack of 5)
Units
- OMNIFET: Fully Autoprotected Power MOSFET - - 40 V 1.7A - - - - Surface Mount SOT-223 3 + Tab -
RS Stock No. 920-6544
Mfr. Part No.VNN1NV04PTR-E
kr 4,728
Each (On a Reel of 1000)
Units
- OMNIFET: Fully Autoprotected Power MOSFET - - 40 V 1.7A - - - - Surface Mount SOT-223 3 + Tab -
RS Stock No. 826-8226
Mfr. Part No.BTS740S2XUMA1
BrandInfineon
kr 57,675
Each (In a Pack of 2)
Units
- - - - - - - - - - Surface Mount DSO 20 +150 °C
RS Stock No. 166-2291
Mfr. Part No.FDC6329L
Brandonsemi
kr 2,262
Each (On a Reel of 3000)
Units
- Integrated Load - - 8 V 2.5A 2 - 0.7W - Surface Mount SOT-23 6 +150 °C
RS Stock No. 809-0846
Mfr. Part No.FDC6329L
Brandonsemi
kr 5,17
Each (On a Tape of 20)
Units
- Integrated Load - - 8 V 2.5A 2 - 0.7W - Surface Mount SOT-23 6 +150 °C
RS Stock No. 877-3129
Mfr. Part No.VNB20N07-E
kr 30,396
Each (In a Pack of 5)
Units
- - - - - - - - - - Surface Mount D2PAK 3 -
RS Stock No. 227-668
Mfr. Part No.3842548949
kr 372,86
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 877-3138
Mfr. Part No.VNB20N07TR-E
kr 28,222
Each (In a Pack of 5)
Units
- - - - - - - - - - Surface Mount D2PAK 3 -
RS Stock No. 165-5330
Mfr. Part No.VNB20N07TR-E
kr 15,661
Each (On a Reel of 1000)
Units
- OMNIFET: Fully Autoprotected Power MOSFET - - 70 V 20A - - - - Surface Mount D2PAK 3 -
RS Stock No. 124-8748
Mfr. Part No.BTS740S2XUMA1
BrandInfineon
kr 30,327
Each (On a Reel of 1000)
Units
- - - - - - - - - - Surface Mount DSO 20 +150 °C
RS Stock No. 168-8914
Mfr. Part No.VNB20N07-E
kr 25,852
Each (In a Tube of 50)
Units
- OMNIFET: Fully Autoprotected Power MOSFET - - 70 V 20A - - - - Surface Mount D2PAK 3 -
RS Stock No. 123-5539
Mfr. Part No.SEN013DG
kr 9,871
Each (In a Pack of 10)
Units
- High Voltage Control Signal - 3 - - - - - - Surface Mount SOIC 8 +125 °C
RS Stock No. 124-8749
Mfr. Part No.BTS721L1XUMA1
BrandInfineon
kr 44,594
Each (On a Reel of 1000)
Units
- - - - - - - - - - Surface Mount DSO 20 -
RS Stock No. 826-8235
Mfr. Part No.BTS721L1XUMA1
BrandInfineon
kr 68,38
Each
Units
- - - - - - - - - - Surface Mount DSO 20 -
RS Stock No. 110-7744
Mfr. Part No.BTS723GWXUMA1
BrandInfineon
kr 50,363
Each (In a Pack of 4)
Units
High Side High Side Power Switch 210mΩ - 58 V 4.2A 2 - - - Surface Mount DSO-14-37 14 +150 °C
RS Stock No. 146-5638
Mfr. Part No.LNK603PG
kr 10,156
Each (In a Tube of 50)
Units
- - - - - - - - - - Through Hole DIPC 7 +150 °C
RS Stock No. 905-4624
Mfr. Part No.1689
kr 232,36
Each
Units
- - - - - - - - - - Panel Mount - - -
RS Stock No. 906-2886
Mfr. Part No.ITS41K0SMENHUMA1
BrandInfineon
kr 10,741
Each (In a Pack of 20)
Units
High Side NMOS - 60 V - 1 - - - Surface Mount SOT-223 3 + Tab +125 °C
RS Stock No. 166-2274
Mfr. Part No.FR015L3EZ
Brandonsemi
kr 2,61
Each (On a Reel of 3000)
Units
- Reverse Polarity Protector 30mΩ - 1.3 V 8A 1 - - - Surface Mount MLP 6 +125 °C
RS Stock No. 123-5387
Mfr. Part No.LNK603PG
kr 10,154
Each (In a Pack of 5)
Units
- - - - - - - - - - Through Hole DIP 7 +150 °C