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. 146-5643
Mfr. Part No.TNY276PN
£0.762
Each (In a Tube of 50)
Units
- Off Lineer 24Ω - - 1350mA 1 - 15W Over-Temperature Through Hole DIPC 8 +150 °C
RS Stock No. 862-9094
Mfr. Part No.FSL117MRIN
£0.918
Each (In a Pack of 5)
Units
- PWM Controller 11Ω - - 0.8A 1 - 10W - Through Hole PDIP 8 +125 °C
RS Stock No. 166-2274
Mfr. Part No.FR015L3EZ
£0.171
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. 145-4416
Mfr. Part No.FSL117MRIN
£0.785
Each (In a Tube of 50)
Units
- PWM Controller 11Ω - - 0.8A 1 - 10W - Through Hole PDIP 8 +125 °C
RS Stock No. 910-1509
Mfr. Part No.MIC2026-1YM
BrandMicrochip
£0.762
Each (In a Pack of 10)
Units
High Side USB Power 90mΩ - 5.5 V 0.9A 4 - - - Surface Mount SOIC 8 +85 °C
RS Stock No. 165-4087
Mfr. Part No.MIC2026-1YM
BrandMicrochip
£0.64
Each (In a Tube of 95)
Units
High Side USB Power 90mΩ - 5.5 V 0.9A 4 - - - Surface Mount SOIC 8 +85 °C
RS Stock No. 165-4275
Mfr. Part No.MIC2026-1YM-TR
BrandMicrochip
£0.58
Each (On a Reel of 2500)
Units
High Side USB Power 90mΩ - 5.5 V 0.9A 4 - - - Surface Mount SOIC 8 +85 °C
RS Stock No. 910-1676
Mfr. Part No.MIC2026-1YM-TR
BrandMicrochip
£0.762
Each (In a Pack of 10)
Units
High Side - 170mΩ - 5.5 V - 2 - - - Surface Mount SOIC 8 +85 °C
RS Stock No. 905-4624
Mfr. Part No.1689
£19.76
Each
Units
- - - - - - - - - - Panel Mount - - -
RS Stock No. 823-5576
Mfr. Part No.BSP452HUMA1
BrandInfineon
£1.418
Each (In a Pack of 5)
Units
- - - - - - - - - - Surface Mount SOT-223 3 + Tab +150 °C
RS Stock No. 146-5635
Mfr. Part No.TNY274GN
£1.02
Each (In a Tube of 50)
Units
- Off Lineer 48Ω - - 750mA 1 - 8.5W Over-Temperature Surface Mount SMDC 8 +150 °C
RS Stock No. 533-890
Mfr. Part No.TNY274GN
£1.234
Each (In a Pack of 5)
Units
- Off Lineer - - - - - - 11W - Surface Mount PDIP SMD 7 +150 °C
RS Stock No. 911-1017
Mfr. Part No.BSP452HUMA1
BrandInfineon
£0.705
Each (On a Reel of 4000)
Units
- - - - - - - - - - Surface Mount SOT-223 3 + Tab +150 °C
RS Stock No. 165-8024
Mfr. Part No.BTS442E2E3062ABUMA1
BrandInfineon
£2.45
Each (On a Reel of 1000)
Units
High Side High Side Switch 35mΩ - 42 V 21A 1 - - - Surface Mount TO-263 5 +150 °C
RS Stock No. 898-6965
Mfr. Part No.BTS442E2E3062ABUMA1
BrandInfineon
£5.48
Each (In a Pack of 2)
Units
High Side High Side Switch 35mΩ - 42 V 21A 1 - - - Surface Mount TO-263 5 +150 °C
RS Stock No. 166-0850
Mfr. Part No.BTS410E2E3062ABUMA1
BrandInfineon
£1.60
Each (On a Reel of 1000)
Units
High Side High Side Power Switch 440mΩ - 42 V 1.8A 1 - - - Surface Mount TO-263 5 +150 °C
RS Stock No. 110-9104
Mfr. Part No.BTS410E2E3062ABUMA1
BrandInfineon
£2.81
Each (In a Pack of 5)
Units
High Side High Side Power Switch 440mΩ - 42 V 1.8A 1 - - - Surface Mount TO-263 5 +150 °C
RS Stock No. 168-7848
Mfr. Part No.VNP35N07-E
£2.887
Each (In a Tube of 50)
Units
- OMNIFET: Fully Autoprotected Power MOSFET - - 70 V 35A - - - - Through Hole TO-220 3 -
RS Stock No. 809-1310
Mfr. Part No.VNP35N07-E
£3.385
Each (In a Pack of 2)
Units
- OMNIFET: Fully Autoprotected Power MOSFET - - 70 V 35A - - - - Through Hole TO-220 3 -
RS Stock No. 124-1412
Mfr. Part No.FPF2700MX
£0.868
Each (On a Reel of 2500)
Units
- - - - 36 V 2A 1 1 - - Surface Mount SOIC 8 +125 °C