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. 862-9123
Mfr. Part No.FSL156MRIN
PHP83.864
Each (In a Pack of 5)
units
- PWM Controller 2.2Ω - - 1.6A 1 - 26W - Through Hole PDIP 8 +125 °C
RS Stock No. 123-5388
Mfr. Part No.LNK603DG
PHP45.885
Each (In a Pack of 10)
units
- - - - - - - - - - Surface Mount SOIC 7 +150 °C
RS Stock No. 714-1161
Mfr. Part No.VN330SP-E
PHP325.24
Each
units
High Side High Side Solid State Relay 0.4Ω - 45 V 0.7A 4 - - - Surface Mount PowerSO 10 +150 °C
RS Stock No. 162-7556
Mfr. Part No.TPS2011AD
PHP112.675
Each (In a Tube of 75)
units
- - - - 5.5 V 0.9A 1 1 - - Surface Mount SOIC 8 +85 °C
RS Stock No. 906-4365
Mfr. Part No.TLE6220GPAUMA2
BrandInfineon
PHP277.315
Each (In a Pack of 2)
units
Low Side Low Side Switch 0.7Ω - 7 V 3A 4 - - - Surface Mount DSO 20 +150 °C
RS Stock No. 123-5392
Mfr. Part No.LNK605DG
PHP51.45
Each (In a Pack of 5)
units
- - - - - - - - - - Surface Mount SOIC 7 +150 °C
RS Stock No. 821-5294
Mfr. Part No.NCP45520IMNTWG-H
PHP51.146
Each (In a Pack of 20)
units
- Controlled Load 22.5mΩ - 5.5 V - 1 - 2.5W - Surface Mount DFN 8 +85 °C
RS Stock No. 665-8810
Mfr. Part No.TPS2011AD
PHP142.824
Each (In a Pack of 5)
units
- - - - 5.5 V 0.9A 1 1 - - Surface Mount SOIC 8 +85 °C
RS Stock No. 123-5539
Mfr. Part No.SEN013DG
PHP47.03
Each (In a Pack of 10)
units
- High Voltage Control Signal - 3 - - - - - - Surface Mount SOIC 8 +125 °C
RS Stock No. 124-5360
Mfr. Part No.NCP45520IMNTWG-H
PHP26.377
Each (On a Reel of 3000)
units
- Controlled Load 22.5mΩ - 5.5 V - 1 - 2.5W - Surface Mount DFN 8 +85 °C
RS Stock No. 168-6831
Mfr. Part No.VN330SP-E
PHP276.359
Each (In a Tube of 50)
units
High Side Solid State Relay 0.4Ω - 45 V 0.7A 4 - - - Surface Mount PowerSO 10 +150 °C
RS Stock No. 620-6333
Mfr. Part No.TPS2211AIDB
PHP103.93
Each (In a Pack of 5)
units
- - - - - - - - - - Surface Mount SSOP 16 +85 °C
RS Stock No. 146-5712
Mfr. Part No.LNK605DG
PHP42.53
Each (In a Tube of 100)
units
- - - - - - - - - - Surface Mount SOC 7 +150 °C
RS Stock No. 166-1192
Mfr. Part No.BTS409L1E3062ABUMA1
BrandInfineon
PHP109.956
Each (On a Reel of 1000)
units
High Side High Side Power Switch 400mΩ - 43 V 2.3A 1 - - - Surface Mount TO-263 5 +150 °C
RS Stock No. 146-2432
Mfr. Part No.SEN013DG
PHP34.262
Each (In a Tube of 100)
units
- High Voltage Control Signal - 3 - - - - - - Surface Mount SOIC 8 +125 °C
RS Stock No. 110-7454
Mfr. Part No.BTS409L1E3062ABUMA1
BrandInfineon
PHP184.238
Each (On a Tape of 5)
units
High Side High Side Power Switch 400mΩ - 43 V 2.3A 1 - - - Surface Mount TO-263 5 +150 °C
RS Stock No. 714-1170
Mfr. Part No.VN340SP-E
PHP279.34
Each
units
High Side High Side Solid State Relay 0.2Ω - 36 V 0.7A 4 - - - Surface Mount SOIC 10 +150 °C
RS Stock No. 178-5044
Mfr. Part No.TLE6220GPAUMA2
BrandInfineon
PHP174.835
Each (On a Reel of 800)
units
Low Side Low Side Switch 0.7Ω - 7 V 3A 4 - - - Surface Mount DSO 20 +150 °C
RS Stock No. 146-5651
Mfr. Part No.TOP252PN
PHP54.537
Each (In a Tube of 50)
units
- Off Lineer 33.4Ω - - 0.68A 1 - 13W Over-Temperature Through Hole DIPC 8 +150 °C
RS Stock No. 168-6834
Mfr. Part No.VN340SP-E
PHP237.378
Each (In a Tube of 50)
units
High Side Solid State Relay 0.2Ω - 36 V 0.7A 4 - - - Surface Mount SOIC 10 +150 °C