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. 166-1192
Mfr. Part No.BTS409L1E3062ABUMA1
BrandInfineon
MYR7.494
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. 110-7454
Mfr. Part No.BTS409L1E3062ABUMA1
BrandInfineon
MYR16.664
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. 714-7884
Mfr. Part No.L6376D
MYR35.76
Each
units
- - - - - - 4 4 - - Surface Mount PowerSO 20 +85 °C
RS Stock No. 146-5627
Mfr. Part No.LNK363PN
MYR3.413
Each (In a Tube of 50)
units
- Off Lineer 54Ω - - 750mA 1 - 4.7W Short Circuit Through Hole DIPB 8 +150 °C
RS Stock No. 714-1170
Mfr. Part No.VN340SP-E
MYR23.89
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. 146-5669
Mfr. Part No.TOP253EN
MYR5.691
Each (In a Tube of 48)
units
- Off Lineer 15.2Ω - - 1.37A 1 - 29W Over-Temperature Surface Mount ESIPC 7 +150 °C
RS Stock No. 110-9105
Mfr. Part No.BTS611L1E3128ABUMA1
BrandInfineon
MYR13.09
Each (In a Pack of 5)
units
High Side High Side Power Switch 400mΩ - 43 V 4.4A 2 - - - Surface Mount TO-263 7 +150 °C
RS Stock No. 146-5689
Mfr. Part No.TOP255GN
MYR10.945
Each (In a Tube of 50)
units
- Off Lineer 4.7Ω - - 2.72A 1 - 35W Over-Temperature Surface Mount SMDC 8 +150 °C
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. 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. 168-8915
Mfr. Part No.VNS3NV04DP-E
MYR6.663
Each (In a Tube of 100)
units
- OMNIFET: Fully Autoprotected Power MOSFET - - 40 V 3.5A - - - - Surface Mount SOIC 8 +150 °C
RS Stock No. 714-1161
Mfr. Part No.VN330SP-E
MYR27.07
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. 920-6323
Mfr. Part No.TDE1798DP
MYR23.414
Each (In a Tube of 50)
units
- High Speed - - 50 V 8mA 1 - - - Through Hole PDIP 8 +85 °C
RS Stock No. 920-6547
Mfr. Part No.VNS3NV04DPTR-E
MYR4.454
Each (On a Reel of 2500)
units
- OMNIFET: Fully Autoprotected Power MOSFET - - 40 V 3.5A - - - - Surface Mount SOIC 8 -
RS Stock No. 168-6831
Mfr. Part No.VN330SP-E
MYR21.15
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. 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. 862-9094
Mfr. Part No.FSL117MRIN
MYR5.65
Each (In a Pack of 5)
units
- PWM Controller 11Ω - - 0.8A 1 - 10W - Through Hole PDIP 8 +125 °C
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. 189-1201
Mfr. Part No.TDE1798DP
MYR28.28
Each
units
- High Speed Switch - - 50 V 8mA 1 - - - Through Hole PDIP 8 +85 °C