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. 862-9088
Mfr. Part No.FSFR2100XSL
€3.465
Each (In a Pack of 2)
units
- Resonant Converter 0.51Ω - 400 V - 1 - 180W - Through Hole SIP 10 +130 °C
RS Stock No. 103-1077
Mfr. Part No.AVS12CB
€2.004
Each (In a Tube of 50)
units
- - - - - - - - - - Through Hole TO-220AB 3 +70 °C
RS Stock No. 862-8791
Mfr. Part No.FR015L3EZ
€0.393
Each (In a Pack of 25)
units
- Reverse Polarity Protector 30mΩ - 1.3 V 8A 1 - - - Surface Mount MLP 6 +125 °C
RS Stock No. 146-5714
Mfr. Part No.TOP257PN
€1.687
Each (In a Tube of 50)
units
- Off Lineer 3.6Ω - - 5.44A 1 - 45W Over-Temperature Through Hole DIPC 8 +150 °C
RS Stock No. 753-2891
Mfr. Part No.BTS500851TMAATMA1
BrandInfineon
€5.06
Each
units
High Side High Side Switch 22mΩ - 58 V 44A 4 - - - Surface Mount TO-220 7 +150 °C
RS Stock No. 166-2274
Mfr. Part No.FR015L3EZ
€0.19
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. 146-5632
Mfr. Part No.TNY274PN
€0.777
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. 919-6664
Mfr. Part No.BTS500851TMAATMA1
BrandInfineon
€2.746
Each (On a Reel of 1000)
units
High Side High Side Switch 22mΩ - 58 V 44A 4 - - - Surface Mount TO-220 7 +150 °C
RS Stock No. 124-6467
Mfr. Part No.BD2204GUL-E2
BrandROHM
€0.525
Each (In a Pack of 15)
units
High Side High Side 120mΩ 2 4.5 V - - - - - Surface Mount VCSP50L1 6 +85 °C
RS Stock No. 753-2905
Mfr. Part No.BTS6143DAUMA1
BrandInfineon
€2.26
Each
units
High Side High Side Switch 24mΩ - 38 V 41A 1 - - - Surface Mount TO-252 5 +150 °C
RS Stock No. 919-6674
Mfr. Part No.BTS6143DAUMA1
BrandInfineon
€1.142
Each (On a Reel of 2500)
units
High Side High Side Switch 24mΩ - 38 V 41A 2 - - - Surface Mount TO-252 5 +150 °C
RS Stock No. 126-7232
Mfr. Part No.AVS12CB
€2.38
Each
units
- - - - - - - - - - Through Hole TO-220AB 3 +70 °C
RS Stock No. 145-4490
Mfr. Part No.FSDM311A
€0.283
Each (In a Tube of 50)
units
- - 14Ω - - - 1 - - - Through Hole PDIP 8 +85 °C
RS Stock No. 753-3128
Mfr. Part No.ITS711L1FUMA1
BrandInfineon
€3.57
Each
units
High Side High Side Switch 400mΩ - 34 V 4.4A 4 - - - Surface Mount SOIC 20 +85 °C
RS Stock No. 753-3273
Mfr. Part No.TLE7231GXUMA1
BrandInfineon
€2.24
Each
units
Low Side Low Side Switch 2.2Ω - 5.5 V 0.5A 4 - - - Surface Mount SOIC 14 +150 °C
RS Stock No. 826-8235
Mfr. Part No.BTS721L1XUMA1
BrandInfineon
€5.48
Each
units
- - - - - - - - - - Surface Mount DSO 20 -
RS Stock No. 919-8724
Mfr. Part No.ITS711L1FUMA1
BrandInfineon
€1.931
Each (On a Reel of 1000)
units
High Side High Side Switch 400mΩ - 34 V 4.4A 4 - - - Surface Mount SOIC 20 +85 °C
RS Stock No. 533-890
Mfr. Part No.TNY274GN
€1.37
Each (In a Pack of 5)
units
- Off Lineer - - - - - - 11W - Surface Mount PDIP SMD 7 +150 °C
RS Stock No. 919-8721
Mfr. Part No.TLE7231GXUMA1
BrandInfineon
€1.146
Each (On a Reel of 2500)
units
Low Side Low Side Switch 2.2Ω - 5.5 V 0.5A 4 - - - Surface Mount SOIC 14 +150 °C
RS Stock No. 124-8749
Mfr. Part No.BTS721L1XUMA1
BrandInfineon
€2.972
Each (On a Reel of 1000)
units
- - - - - - - - - - Surface Mount DSO 20 -