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. 793-1415
Mfr. Part No.VNS3NV04DPTR-E
€1.456
Each (In a Pack of 5)
units
- OMNIFET: Fully Autoprotected Power MOSFET - - 40 V 3.5A - - - - Surface Mount SOIC 8 -
RS Stock No. 822-8827
Mfr. Part No.AP2280-2FMG-7
€0.453
Each (In a Pack of 20)
units
- Load 250mΩ - 6 V 2A 1 - 1.26W - Surface Mount DFN-2018 6 +85 °C
RS Stock No. 862-9081
Mfr. Part No.FSFR1700XS
€2.586
Each (In a Pack of 5)
units
- Resonant Converter 1.25Ω - 400 V - 1 - 100W - Through Hole SIP 10 +130 °C
RS Stock No. 670-9955
Mfr. Part No.FPF2100
€0.728
Each (In a Pack of 5)
units
- - 0.16Ω - - - 1 - - - Surface Mount SOT-23 5 +85 °C
RS Stock No. 517-1084
Mfr. Part No.TPS2044BD
€2.376
Each (In a Pack of 5)
units
High Side USB Power 70mΩ - 5.5 V 1.25A 8 - - - Surface Mount SOIC 16 +85 °C
RS Stock No. 714-1173
Mfr. Part No.VN340SPTR-E
€4.58
Each
units
- - - - - - 4 - - - Surface Mount PowerSO 10 -
RS Stock No. 165-8346
Mfr. Part No.AP2511MP-13
€0.177
Each (On a Reel of 2500)
units
High Side - 135mΩ - 5.5 V 4.6A 2 - - - Surface Mount MSOP 8EP 8 +85 °C
RS Stock No. 862-9135
Mfr. Part No.FSL306LRLX
€0.805
Each (In a Pack of 10)
units
- Integrate Pulse Width Modulator 18Ω - - 0.45A 1 - 3W - Surface Mount LSOP 8 +125 °C
RS Stock No. 166-0824
Mfr. Part No.BTS50452EKAXUMA1
BrandInfineon
€0.743
Each (On a Reel of 2500)
units
High Side High Side Power Switch 90mΩ - 28 V 4.5A 2 - - - Surface Mount DSO-14-40 14 +150 °C
RS Stock No. 161-2598
Mfr. Part No.NCP451FCT2G
€0.174
Each (On a Reel of 3000)
units
High Side High Side 35mΩ 1 5.5 V - - - - - Surface Mount WLCSP 6 +125 °C
RS Stock No. 168-2902
Mfr. Part No.MAX14002AAP+
€4.80
Each
units
- - - 1 3.6 V, 5.5 V 1.5 mA, 8mA - - - - Surface Mount SSOP 20 +125 °C
RS Stock No. 825-6719
Mfr. Part No.TPS22965DSGT
€0.763
Each (In a Pack of 10)
units
- Load 25mΩ - 5.5 V 6A 1 - - - Surface Mount WSON 8 +85 °C
RS Stock No. 122-2931
Mfr. Part No.AP2156MPG-13
€0.243
Each (On a Reel of 2500)
units
High Side - 160mΩ - 5.5 V 1A 2 - - - Surface Mount MSOP 8 +85 °C
RS Stock No. 179-1647
Mfr. Part No.TPS2034D
€1.815
Each (In a Tube of 75)
units
High Side USB Power 33mΩ - 5.5 V 3A 4 - - - Surface Mount SOIC 8 +85 °C
RS Stock No. 165-8211
Mfr. Part No.BTS3405GXUMA1
BrandInfineon
€0.564
Each (On a Reel of 2500)
units
Low Side Smart Low-Side 1.9Ω - 10 V 350mA 1 - - - Surface Mount SOIC 8 +150 °C
RS Stock No. 921-5150
Mfr. Part No.TPS22945DCKR
€0.382
Each (On a Reel of 3000)
units
- - - - 5.5 V 0.15A 1 - - - Surface Mount SC-70 5 +85 °C
RS Stock No. 170-2291
Mfr. Part No.BTS3160DAUMA1
BrandInfineon
€1.103
Each (On a Reel of 2500)
units
Low Side Low Side Switch 18mΩ - 45 V 7.8A 1 - - - Surface Mount TO-252 5 + Tab +150 °C
RS Stock No. 166-0876
Mfr. Part No.BTS3028SDLATMA1
BrandInfineon
€0.997
Each (On a Reel of 2500)
units
Low Side Low Side Power Switch 128mΩ - 10 V 5.8A 1 - - - Surface Mount TO-252 3 +150 °C
RS Stock No. 921-0470
Mfr. Part No.AP2337SA-7
€0.078
Each (In a Pack of 30)
units
High Side - 170mΩ - 5.5 V 1.9A 1 - - - Surface Mount SOT-23 3 +85 °C
RS Stock No. 919-8709
Mfr. Part No.ITS5215LCUMA1
BrandInfineon
€1.098
Each (On a Reel of 1000)
units
High Side High Side Switch 180mΩ - 16 V 9.5A 2 - - - Surface Mount SOIC 12 +85 °C