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. 793-1415
Mfr. Part No.VNS3NV04DPTR-E
MYR7.486
Each (In a Pack of 5)
units
- OMNIFET: Fully Autoprotected Power MOSFET - - 40 V 3.5A - - - - Surface Mount SOIC 8 -
RS Stock No. 146-5651
Mfr. Part No.TOP252PN
MYR4.641
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. 121-7895
Mfr. Part No.UAA2016DG
MYR5.953
Each (In a Tube of 98)
units
- - - - - - 1 - - - Surface Mount SOIC 8 +85 °C
RS Stock No. 146-5665
Mfr. Part No.TOP253PN
MYR5.082
Each (In a Tube of 50)
units
- Off Lineer 15.2Ω - - 1.37A 1 - 25W Over-Temperature Through Hole DIPC 8 +150 °C
RS Stock No. 227-668
Mfr. Part No.3842548949
MYR167.56
Each
units
- - - - - - - - - - - - - -
RS Stock No. 145-4416
Mfr. Part No.FSL117MRIN
MYR4.82
Each (In a Tube of 50)
units
- PWM Controller 11Ω - - 0.8A 1 - 10W - Through Hole PDIP 8 +125 °C
RS Stock No. 189-1201
Mfr. Part No.TDE1798DP
MYR28.28
Each
units
- High Speed Switch - - 50 V 8mA 1 - - - Through Hole PDIP 8 +85 °C
RS Stock No. 862-8791
Mfr. Part No.FR015L3EZ
MYR2.268
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. 146-5701
Mfr. Part No.TOP256GN
MYR8.457
Each (In a Tube of 50)
units
- Off Lineer 4.75Ω - - 4.08A 1 - 40W Over-Temperature Surface Mount SMDC 8 +150 °C
RS Stock No. 146-5690
Mfr. Part No.TOP255MN
MYR10.945
Each (In a Tube of 50)
units
- Off Lineer 4.7Ω - - 2.72A 1 - 52W Over-Temperature Through Hole SDIPC 10 +150 °C
RS Stock No. 146-5699
Mfr. Part No.LNK364DN
MYR6.176
Each (In a Tube of 100)
units
- Off Lineer 45Ω - - 750mA 1 - 6W Short Circuit Surface Mount SOC 8 +150 °C
RS Stock No. 533-890
Mfr. Part No.TNY274GN
MYR6.866
Each (In a Pack of 5)
units
- Off Line Switcher - - - - - - 11W - Surface Mount PDIP SMD 7 +150 °C
RS Stock No. 827-5259
Mfr. Part No.BSP742RIXUMA1
BrandInfineon
MYR5.40
Each (In a Pack of 20)
units
High Side High Side Switch 700mΩ - 34 V 0.4A 1 - - - Surface Mount DSO 8 +150 °C
RS Stock No. 160-9825
Mfr. Part No.ADP195ACPZ-R7
MYR2.809
Each (On a Reel of 3000)
units
High Side High Side Switch - - 3.6 V 200mA 2 - - - Surface Mount LFCSP UD 6 +85 °C
RS Stock No. 168-8932
Mfr. Part No.VN920B5-E
MYR11.433
Each (In a Tube of 50)
units
High Side Driver 55mΩ - 36 V 30A 1 - - - Surface Mount P2PAK 5 +150 °C
RS Stock No. 146-5622
Mfr. Part No.LNK362PN
MYR3.15
Each (In a Tube of 50)
units
- Off Lineer 88Ω - - 375mA 1 - 2.6W Short Circuit Through Hole DIPB 8 +150 °C
RS Stock No. 124-8772
Mfr. Part No.BSP742RXUMA1
BrandInfineon
MYR3.67
Each (On a Reel of 2500)
units
High Side High Side Switch 700mΩ - 34 V 0.4A 1 - - - Surface Mount DSO 8 +150 °C
RS Stock No. 807-6049
Mfr. Part No.FSFR1800XSL
MYR12.305
Each (In a Pack of 2)
units
- - 0.95Ω - 400 V 7A 1 - 260W - Through Hole SIP 9 +135 °C
RS Stock No. 753-3122
Mfr. Part No.ITS716GFUMA1
BrandInfineon
MYR19.94
Each
units
High Side High Side Switch 280mΩ - 40 V 5.3A 4 - - - Surface Mount SOIC 20 +85 °C
RS Stock No. 166-3622
Mfr. Part No.FSFR1700XSL
MYR13.272
Each (In a Tube of 19)
units
- Resonant Converter 1.25Ω - 400 V - 1 - 100W - Through Hole SIP 10 +130 °C