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. 146-5630
Mfr. Part No.LNK364PN
£0.734
Each (In a Tube of 50)
Units
- Off Lineer 45Ω - - 750mA 1 - 6W Short Circuit Through Hole DIPB 8 +150 °C
RS Stock No. 124-1345
Mfr. Part No.FDC6330L
Brandonsemi
£0.166
Each (On a Reel of 3000)
Units
- Integrated Load 0.125Ω - 20 V 2.3A 2 - 0.7W - Surface Mount SOT-23 6 +150 °C
RS Stock No. 761-3372
Mfr. Part No.FDC6330L
£0.403
Each (In a Pack of 10)
Units
- Integrated Load 0.125Ω - 20 V 2.3A 2 - 0.7W - Surface Mount SOT-23 6 +150 °C
RS Stock No. 165-4312
Mfr. Part No.MIC2005A-1YM6-TR
BrandMicrochip
£0.16
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. 911-2723
Mfr. Part No.MIC2005A-1YM6-TR
BrandMicrochip
£0.207
Each (In a Pack of 25)
Units
High Side USB Power 275mΩ - 5.5 V 0.9A 1 - - - Surface Mount SOT-23 6 +85 °C
RS Stock No. 919-6595
Mfr. Part No.BTS711L1XUMA1
BrandInfineon
£3.255
Each (On a Reel of 1000)
Units
- High Speed 0.165Ω - 16 V 7.5A 4 - - - Surface Mount DSO 20 +150 °C
RS Stock No. 445-2326
Mfr. Part No.BTS711L1XUMA1
BrandInfineon
£4.41
Each
Units
- High Speed 0.165Ω - 16 V 7.5A 4 - - - Surface Mount DSO 20 +150 °C
RS Stock No. 146-5658
Mfr. Part No.TNY277PN
£0.984
Each (In a Tube of 50)
Units
- Off Lineer 13.5Ω - - 1650mA 1 - 18W Over-Temperature Through Hole DIPC 8 +150 °C
RS Stock No. 146-5693
Mfr. Part No.TNY280PN
£1.49
Each (In a Tube of 50)
Units
- Off Lineer 4.5Ω - - 2550mA 1 - 28.5W Over-Temperature Through Hole DIPC 8 +150 °C
RS Stock No. 227-668
Mfr. Part No.3842548949
£28.77
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 146-5632
Mfr. Part No.TNY274PN
£0.805
Each (In a Tube of 50)
Units
- Off Lineer 48Ω - - 750mA 1 - 8.5W Over-Temperature Through Hole DIPC 8 +150 °C
RS Stock No. 146-5679
Mfr. Part No.TNY279PN
£1.265
Each (In a Tube of 50)
Units
- Off Lineer 6.7Ω - - 2250mA 1 - 25W Over-Temperature Through Hole DIPC 8 +150 °C
RS Stock No. 920-8953
Mfr. Part No.VNP10N07-E
£1.633
Each (In a Tube of 50)
Units
- OMNIFET: Fully Autoprotected Power MOSFET - - 70 V 10A 1 - - - Through Hole TO-220 3 -
RS Stock No. 686-8518
Mfr. Part No.VNP10N07-E
£1.85
Each (In a Pack of 2)
Units
- OMNIFET: Fully Autoprotected Power MOSFET - - 70 V 10A 1 - - - Through Hole TO-220 3 -
RS Stock No. 905-4652
Mfr. Part No.1304
£4.72
Each
Units
- USB - - 4.2 V 500mA - - - - Panel Mount - - -
RS Stock No. 146-5631
Mfr. Part No.LNK364GN
£0.768
Each (In a Tube of 50)
Units
- Off Lineer 45Ω - - 750mA 1 - 6W Short Circuit Surface Mount SMDB 8 +150 °C
RS Stock No. 168-8922
Mfr. Part No.STMPS2141STR
£0.284
Each (On a Reel of 3000)
Units
High Side MOSFET 160mΩ - 5.5 V 0.5A 1 - - - Surface Mount SOT-23 5 +125 °C
RS Stock No. 880-5406
Mfr. Part No.STMPS2141STR
£0.602
Each (In a Pack of 10)
Units
High Side MOSFET 160mΩ - 5.5 V 0.5A 1 - - - Surface Mount SOT-23 5 +125 °C
RS Stock No. 146-8596
Mfr. Part No.TNY276PN
£1.15
Each
Units
- Off Lineer 24Ω - - 1350mA 1 - 15W Over-Temperature Through Hole DIPC 8 +150 °C
RS Stock No. 862-8791
Mfr. Part No.FR015L3EZ
Brandonsemi
£0.492
Each (In a Pack of 25)
Units
- Reverse Polarity Protector 30mΩ - 1.3 V 8A 1 - - - Surface Mount MLP 6 +125 °C