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. 910-1868
Mfr. Part No.MIC2545A-1YM
BrandMicrochip
PHP185.22
Each (In a Pack of 2)
units
High Side USB Power - - 5.5 V 3A - - - - Surface Mount SOP 8 +85 °C
RS Stock No. 165-5277
Mfr. Part No.STG3157CTR
PHP8.022
Each (On a Reel of 3000)
units
- Low Voltage SPDT 60Ω - 5.5 V 128mA 2 - - - Surface Mount SOT-323 6 +125 °C
RS Stock No. 166-1150
Mfr. Part No.BTS50901EJAXUMA1
BrandInfineon
PHP39.661
Each (On a Reel of 2500)
units
High Side High Side Power Switch 180mΩ - 28 V 3A 1 - - - Surface Mount DSO-8-43 8 +150 °C
RS Stock No. 880-5557
Mfr. Part No.VNN7NV04PTR-E
PHP63.798
Each (In a Pack of 10)
units
- - - - - - - - - - Surface Mount SOT-223 3 + Tab -
RS Stock No. 825-9124
Mfr. Part No.BTS716GBXUMA1
BrandInfineon
PHP226.894
Each (In a Pack of 5)
units
High Side High Side Switch 280mΩ - 40 V 2.6A 4 - - - Surface Mount DSO 20 +150 °C
RS Stock No. 146-5722
Mfr. Part No.LNK306DN
PHP54.374
Each (In a Tube of 100)
units
Low Side Off Lineer 12.9Ω - - 360mA 1 - - Short Circuit Surface Mount SOC 8 +150 °C
RS Stock No. 165-6851
Mfr. Part No.VNI8200XPTR
PHP329.928
Each (On a Reel of 1000)
units
High Side Solid State Relay 0.2Ω - 45 V 0.7A 8 - - - Surface Mount PowerSSO 36 -
RS Stock No. 802-1755
Mfr. Part No.NCP45521IMNTWG-L
PHP51.146
Each (On a Tape of 10)
units
- Controlled Load 22.5mΩ - 5.5 V 750A 1 - 2.5W - Surface Mount DFN 8 +85 °C
RS Stock No. 862-9094
Mfr. Part No.FSL117MRIN
PHP66.37
Each (In a Pack of 5)
units
- PWM Controller 11Ω - - 0.8A 1 - 10W - Through Hole PDIP 8 +125 °C
RS Stock No. 793-1415
Mfr. Part No.VNS3NV04DPTR-E
PHP99.404
Each (In a Pack of 5)
units
- OMNIFET: Fully Autoprotected Power MOSFET - - 40 V 3.5A - - - - Surface Mount SOIC 8 -
RS Stock No. 146-5647
Mfr. Part No.TNY276GN
PHP68.429
Each (In a Tube of 50)
units
- Off Lineer 24Ω - - 1350mA 1 - 15W Over-Temperature Surface Mount SMDC 8 +150 °C
RS Stock No. 227-668
Mfr. Part No.3842548949
PHP1,977.80
Each
units
- - - - - - - - - - - - - -
RS Stock No. 145-4415
Mfr. Part No.FSFR2100XSL
PHP201.169
Each (In a Tube of 19)
units
- Resonant Converter 0.51Ω - 400 V - 1 - 180W - Through Hole SIP 10 +130 °C
RS Stock No. 897-7668
Mfr. Part No.ISO1H816GAUMA1
BrandInfineon
PHP482.64
Each
units
High Side High Side Switch 200mΩ - 6.5 V 1.2A 8 - - - Surface Mount DSO-36 36 -
RS Stock No. 877-3144
Mfr. Part No.VNS3NV04DP-E
PHP116.858
Each (In a Pack of 5)
units
- OMNIFET: Fully Autoprotected Power MOSFET - - 40 V 3.5A - - - - Surface Mount SOIC 8 +150 °C
RS Stock No. 862-9088
Mfr. Part No.FSFR2100XSL
PHP223.81
Each (In a Pack of 2)
units
- Resonant Converter 0.51Ω - 400 V - 1 - 180W - Through Hole SIP 10 +130 °C
RS Stock No. 145-4416
Mfr. Part No.FSL117MRIN
PHP56.595
Each (In a Tube of 50)
units
- PWM Controller 11Ω - - 0.8A 1 - 10W - Through Hole PDIP 8 +125 °C
RS Stock No. 146-5697
Mfr. Part No.TOP256EN
PHP91.581
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. 827-5117
Mfr. Part No.BTS118DATMA1
BrandInfineon
PHP83.349
Each (In a Pack of 25)
units
Low Side Low Side Switch 240mΩ - 42 V 5A 1 - - - Surface Mount TO-252 3 +150 °C
RS Stock No. 165-8453
Mfr. Part No.AP2553AW6-7
PHP10.878
Each (On a Reel of 3000)
units
High Side - 135mΩ - 5.5 V 2542mA 1 - - - Surface Mount SOT-26 6 +85 °C