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. 146-5635
Mfr. Part No.TNY274GN
€1.132
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. 165-5311
Mfr. Part No.VND5160JTR-E
€0.912
Each (On a Reel of 2500)
units
- - - - - - - - - - - - - -
RS Stock No. 145-4414
Mfr. Part No.FSFR1700XS
€2.119
Each (In a Tube of 19)
units
- Resonant Converter 1.25Ω - 400 V - 1 - 100W - Through Hole SIP 10 +130 °C
RS Stock No. 166-2917
Mfr. Part No.FPF2701MX
€0.982
Each (On a Reel of 2500)
units
- - - - 36 V 2A 1 1 - - Surface Mount SOIC 8 +85 °C
RS Stock No. 168-5060
Mfr. Part No.TPS22925BNYPHT
€0.203
Each (On a Reel of 250)
units
- MOSFET Load 9.2Ω - 3.6 V 3A 1 - - - Surface Mount DSBGA 6 +105 °C
RS Stock No. 165-4129
Mfr. Part No.MIC2505-1YM
BrandMicrochip
€1.399
Each (In a Tube of 95)
units
High Side USB Power - - 7.5 V 4A - - - - Surface Mount SOIC 8 +85 °C
New
RS Stock No. 216-7810
Mfr. Part No.MAX77958EWV+T
€1.736
Each (In a Pack of 5)
units
- - - - - - 1 - - - Surface Mount WLP 6 -
RS Stock No. 165-8024
Mfr. Part No.BTS442E2E3062ABUMA1
BrandInfineon
€3.761
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. 110-9061
Mfr. Part No.TLE7230RAUMA1
BrandInfineon
€4.71
Each (In a Pack of 2)
units
Low Side Low Side Power Switch 1.7Ω - 5.5 V - 8 - - - Surface Mount DSO-36-47 36 +150 °C
RS Stock No. 166-0806
Mfr. Part No.BTS50902EKAXUMA1
BrandInfineon
€0.73
Each (On a Reel of 2500)
units
High Side High Side Power Switch 180mΩ - 41 V 3.5A 2 - - - Surface Mount DSO-14-40 14 +150 °C
RS Stock No. 791-8040
Mfr. Part No.VNI8200XPTR
€7.688
Each (In a Pack of 5)
units
High Side Solid State Relay 0.2Ω - 45 V 0.7A 8 - - - Surface Mount PowerSSO 36 -
RS Stock No. 196-3983
Mfr. Part No.Si83404AAA-IF
€2.795
Each (In a Pack of 2)
units
High Side Isolated Smart - - 5.5 V, 32 V - 4 - 4W - Surface Mount DFN 32 +125 °C
RS Stock No. 165-5312
Mfr. Part No.VND14NV04TR-E
€0.772
Each (On a Reel of 2500)
units
- - - - - - - - - - - - - -
RS Stock No. 825-6765
Mfr. Part No.TPS2561DRCT
€1.934
Each (In a Pack of 5)
units
- Distribution 70mΩ - 6.5 V 2.5A 2 - 2.403W - Surface Mount SON 10 +85 °C
RS Stock No. 862-9148
Mfr. Part No.FSL336LRN
€1.132
Each (In a Pack of 5)
units
- Integrate Pulse Width Modulator - - - 1.8A 1 - 7.08W - Through Hole PDIP 7 -
RS Stock No. 164-5233
Mfr. Part No.MAX14912AKN+
€8.74
Each
units
High Side Push-Pull Driver 230mΩ 8 36 V 1.5 A, 22A - - - - Surface Mount QFN 56 +125 °C
RS Stock No. 166-3747
Mfr. Part No.FPF1504UCX
€0.114
Each (On a Reel of 3000)
units
- MOSFET Load 80mΩ - 3.6 V 1.5A 1 - 1W - Surface Mount WLCSP 4 +85 °C
RS Stock No. 862-9072
Mfr. Part No.FSFA2100
€5.62
Each
units
- PWM Converter 0.38Ω - 400 V - 1 - 200W - Through Hole SIP 10 +130 °C
RS Stock No. 793-1403
Mfr. Part No.VNN1NV04PTR-E
€0.89
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. 177-0778
Mfr. Part No.MIC2027-1YM
BrandMicrochip
€0.912
Each (In a Pack of 5)
units
High Side USB Power 180mΩ - 5.5 V 1A 4 - - - Surface Mount SOIC 16 +85 °C