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. 671-0163
Mfr. Part No.FSDM0565REWDTU
$2.94
Each (In a Pack of 5)
units
- - 1.76Ω - - - 1 - - - Through Hole TO-220F 6 +85 °C
RS Stock No. 146-5653
Mfr. Part No.LNK606PG
$1.57
Each (In a Tube of 50)
units
- - - - - - - - - - Through Hole DIPC 7 +150 °C
RS Stock No. 146-5664
Mfr. Part No.TNY277GN
$2.23
Each (In a Tube of 50)
units
- Off Lineer 13.5Ω - - 1650mA 1 - 18W Over-Temperature Surface Mount SMDC 8 +150 °C
RS Stock No. 824-5490
Mfr. Part No.AP2152MPG-13
$2.13
Each (In a Pack of 5)
units
High Side - 150mΩ - 5.5 V 1A 2 - - - Surface Mount MSOP 8 +85 °C
RS Stock No. 714-1161
Mfr. Part No.VN330SP-E
$10.06
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. 862-8791
Mfr. Part No.FR015L3EZ
$0.733
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. 124-1415
Mfr. Part No.FDC6324L
$0.356
Each (On a Reel of 3000)
units
- Integrated Load - - 20 V 1A 2 - 0.7W - Surface Mount SOT-23 6 +150 °C
RS Stock No. 919-6618
Mfr. Part No.BTS133TCBUMA1
BrandInfineon
$1.96
Each (On a Reel of 1000)
units
Low Side Low Side Switch 120mΩ - 73 V 7A 1 - - - Surface Mount TO-263 3 +150 °C
RS Stock No. 802-3212
Mfr. Part No.FDC6326L
$0.889
Each (In a Pack of 20)
units
- Integrated Load 0.125Ω - 20 V 1.8A - - 0.7W - Surface Mount SOT-23 6 +150 °C
RS Stock No. 123-5393
Mfr. Part No.LNK606PG
$1.842
Each (In a Pack of 5)
units
- - - - - - - - - - Through Hole DIP 7 +150 °C
RS Stock No. 122-3302
Mfr. Part No.AP2152MPG-13
$1.017
Each (On a Reel of 2500)
units
High Side - 150mΩ - 5.5 V 1A 2 - - - Surface Mount MSOP 8 +85 °C
RS Stock No. 124-1345
Mfr. Part No.FDC6330L
$0.279
Each (On a Reel of 3000)
units
- Integrated Load 0.125Ω - 20 V 2.3A 2 - 0.7W - Surface Mount SOT-23 6 +150 °C
RS Stock No. 761-3372
Mfr. Part No.FDC6330L
$0.795
Each (In a Pack of 10)
units
- Integrated Load Switch 0.125Ω - 20 V 2.3A 2 - 0.7W - Surface Mount SOT-23 6 +150 °C
RS Stock No. 166-2274
Mfr. Part No.FR015L3EZ
$0.325
Each (On a Reel of 3000)
units
- Reverse Polarity Protector 30mΩ - 1.3 V 8A 1 - - - Surface Mount MLP 6 +125 °C
RS Stock No. 146-8695
Mfr. Part No.LNK606PG
$1.83
Each
units
- - - - - - - - - - Through Hole DIPC 8 +150 °C
RS Stock No. 809-0834
Mfr. Part No.FDC6324L
$0.813
Each (In a Pack of 20)
units
- Integrated Load - - 20 V 1A 2 - 0.7W - Surface Mount SOT-23 6 +150 °C
RS Stock No. 168-6831
Mfr. Part No.VN330SP-E
$8.547
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. 124-1412
Mfr. Part No.FPF2700MX
$1.701
Each (On a Reel of 2500)
units
- - - - 36 V 2A 1 1 - - Surface Mount SOIC 8 +125 °C
RS Stock No. 808-8966
Mfr. Part No.FPF2700MX
$4.192
Each (In a Pack of 5)
units
- - - - 36 V 2A 1 1 - - Surface Mount SOIC 8 +125 °C
RS Stock No. 752-8268
Mfr. Part No.BTS133TCBUMA1
BrandInfineon
$4.08
Each
units
Low Side Low Side Switch 120mΩ - 73 V 7A 1 - - - Surface Mount TO-263 3 +150 °C