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. 166-0884
Mfr. Part No.BTS3256DAUMA1
BrandInfineon
€1.28
Each (On a Reel of 2500)
units
Low Side Low Side Power Switch 20mΩ - 30 V 8.7A 1 - - - Surface Mount TO-252 5 +150 °C
RS Stock No. 829-6852
Mfr. Part No.ISO8200B
€6.86
Each
units
High Side Smart Power SSR 0.24Ω - 36 V 0.7A 8 - - - Surface Mount PowerSO 36 +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. 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. 714-1177
Mfr. Part No.VN808CM-E
€5.49
Each
units
- - - - 45 V 700mA 8 8 - - Surface Mount PowerSO 36 +125 °C
RS Stock No. 919-8755
Mfr. Part No.BTS4141NHUMA1
BrandInfineon
€0.808
Each (On a Reel of 4000)
units
High Side High Side Switch 320mΩ - 45 V 0.7A 1 - - - Surface Mount SOT-223 3 + Tab +125 °C
RS Stock No. 168-8692
Mfr. Part No.ISO8200B
€5.91
Each (In a Tube of 31)
units
High Side Smart Power SSR 0.24Ω - 36 V 0.7A 8 - - - Surface Mount PowerSO 36 +125 °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
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. 825-9272
Mfr. Part No.BTS4141NHUMA1
BrandInfineon
€1.377
Each (In a Pack of 10)
units
High Side High Side Switch 320mΩ - 45 V 0.7A 1 - - - Surface Mount SOT-223 3 + Tab +125 °C
RS Stock No. 880-5544
Mfr. Part No.VN920B5-E
€2.582
Each (In a Pack of 5)
units
High Side Driver 55mΩ - 36 V 30A 1 - - - Surface Mount P2PAK 5 +150 °C
RS Stock No. 760-3271
Mfr. Part No.TPD2005F(EL,F)
BrandToshiba
€5.18
Each
units
High Side High Side Switch 1.2Ω - 40 V - 8 - 1.2W - Surface Mount SSOP 24 +85 °C
RS Stock No. 146-5672
Mfr. Part No.TNY278GN
€1.427
Each (In a Tube of 50)
units
- Off Lineer - - 1650mA 1 - 21.5W Over-Temperature Surface Mount SMDC 8 +150 °C
RS Stock No. 170-2277
Mfr. Part No.BTS442E2BKSA1
BrandInfineon
€4.835
Each (In a Tube of 50)
units
High Side High Side Switch 18mΩ - 42 V 21A 1 - 167W - Through Hole TO-220-5 5 + Tab +150 °C
RS Stock No. 753-3093
Mfr. Part No.ITS4141NHUMA1
BrandInfineon
€1.425
Each (In a Pack of 2)
units
High Side High Side Switch 320mΩ - 48 V 0.7A 1 - - - Surface Mount SOT-223 3 + Tab +85 °C
RS Stock No. 227-668
Mfr. Part No.3842548949
€33.69
Each
units
- - - - - - - - - - - - - -
RS Stock No. 145-4415
Mfr. Part No.FSFR2100XSL
€2.953
Each (In a Tube of 19)
units
- Resonant Converter 0.51Ω - 400 V - 1 - 180W - Through Hole SIP 10 +130 °C
RS Stock No. 891-2762
Mfr. Part No.TC4W53FU(TE12L,F)
BrandToshiba
€0.325
Each (In a Pack of 10)
units
- - - - 20 V - - - - - Surface Mount SSOP 8 +85 °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. 145-4321
Mfr. Part No.KA5L0380RYDTU
€0.605
Each (In a Tube of 50)
units
- Off Lineer 4.6Ω - 30 V 2.41A 1 - 75W - Through Hole TO-220F 4 +85 °C