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. 166-0850
Mfr. Part No.BTS410E2E3062ABUMA1
BrandInfineon
€1.856
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
€3.262
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. 110-7115
Mfr. Part No.ITS4300SSJDXUMA1
BrandInfineon
€0.827
Each (In a Pack of 12)
units
High Side High Side Power Switch 600mΩ - 40 V - 1 - - - Surface Mount DSO 8 +125 °C
RS Stock No. 166-0787
Mfr. Part No.ITS4300SSJDXUMA1
BrandInfineon
€0.473
Each (On a Reel of 2500)
units
High Side High Side Power Switch 600mΩ - 40 V - 1 - - - Surface Mount DSO 8 +125 °C
RS Stock No. 760-6021
Mfr. Part No.FSFR1800HS
€3.04
Each
units
- Integrated 0.95Ω - 25 V 7A 2 - 260W - Through Hole SIP 10 +130 °C
RS Stock No. 146-5697
Mfr. Part No.TOP256EN
€1.54
Each (In a Tube of 48)
units
- Off Lineer 4.75Ω - - 4.08A 1 - 86W Over-Temperature Surface Mount ESIPC 7 +150 °C
RS Stock No. 662-2394
Mfr. Part No.TPS2105DBVT
€1.764
Each (In a Pack of 5)
units
- - - - 5.5 V 500mA 1 2 - - Surface Mount SOT-23 5 +85 °C
RS Stock No. 162-7144
Mfr. Part No.TPS2105DBVT
€1.049
Each (On a Reel of 250)
units
- - - - 5.5 V 500mA 1 2 - - Surface Mount SOT-23 5 +85 °C
RS Stock No. 166-0819
Mfr. Part No.BTS621L1E3128ABUMA1
BrandInfineon
€2.019
Each (On a Reel of 1000)
units
High Side High Side Power Switch 200mΩ - 43 V 8.5A 2 - - - Surface Mount TO-263 7 +150 °C
RS Stock No. 110-7772
Mfr. Part No.BTS621L1E3128ABUMA1
BrandInfineon
€3.625
Each (In a Pack of 4)
units
High Side High Side Power Switch 200mΩ - 43 V 8.5A 2 - - - Surface Mount TO-263 7 +150 °C
RS Stock No. 825-9203
Mfr. Part No.BTS3046SDRATMA1
BrandInfineon
€1.348
Each (In a Pack of 10)
units
Low Side Low Side Switch 50mΩ - 60 V 3.6A 1 - - - Surface Mount TO-252 3 +150 °C
RS Stock No. 165-6889
Mfr. Part No.BTS3046SDRATMA1
BrandInfineon
€0.809
Each (On a Reel of 2500)
units
Low Side Low Side Switch 50mΩ - 60 V 3.6A 1 - - - Surface Mount TO-252 3 +150 °C
RS Stock No. 760-6024
Mfr. Part No.FSFR1800HSL
€2.62
Each
units
- Integrated 0.95Ω - 25 V 7A 2 - 260W - Through Hole SIP 10 +130 °C
RS Stock No. 123-5539
Mfr. Part No.SEN013DG
€0.789
Each (In a Pack of 10)
units
- High Voltage Control Signal - 3 - - - - - - Surface Mount SOIC 8 +125 °C
RS Stock No. 145-5326
Mfr. Part No.FSFR1800HSL
€2.219
Each (In a Tube of 19)
units
- Integrated 0.95Ω - 25 V 7A 2 - 260W - Through Hole SIP 10 +130 °C
RS Stock No. 146-2432
Mfr. Part No.SEN013DG
€0.575
Each (In a Tube of 100)
units
- High Voltage Control Signal - 3 - - - - - - Surface Mount SOIC 8 +125 °C
RS Stock No. 110-9094
Mfr. Part No.BTS3256DAUMA1
BrandInfineon
€2.52
Each (In a Pack of 5)
units
Low Side Low Side Power Switch 20mΩ - 30 V 8.7A 1 - - - Surface Mount TO-252 5 +150 °C
RS Stock No. 168-6836
Mfr. Part No.VN808CM-E
€4.733
Each (In a Tube of 31)
units
- - - - 45 V 700mA 8 8 - - Surface Mount PowerSO 36 +125 °C
RS Stock No. 919-6692
Mfr. Part No.ITS4141NHUMA1
BrandInfineon
€0.808
Each (On a Reel of 4000)
units
High Side High Side Switch 320mΩ - 48 V 0.7A 1 - - - Surface Mount SOT-223 3 + Tab +85 °C
RS Stock No. 168-8932
Mfr. Part No.VN920B5-E
€2.196
Each (In a Tube of 50)
units
High Side Driver 55mΩ - 36 V 30A 1 - - - Surface Mount P2PAK 5 +150 °C