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. 146-5679
Mfr. Part No.TNY279PN
MYR6.30
Each (In a Tube of 50)
units
- Off Lineer 6.7Ω - - 2250mA 1 - 25W Over-Temperature Through Hole DIPC 8 +150 °C
RS Stock No. 146-5721
Mfr. Part No.TOP258PN
MYR9.807
Each (In a Tube of 50)
units
- Off Lineer 2.9Ω - - 6.88A 1 - 50W Over-Temperature Through Hole DIPC 8 +150 °C
RS Stock No. 146-5693
Mfr. Part No.TNY280PN
MYR7.514
Each (In a Tube of 50)
units
- Off Lineer 4.5Ω - - 2550mA 1 - 28.5W Over-Temperature Through Hole DIPC 8 +150 °C
RS Stock No. 146-5630
Mfr. Part No.LNK364PN
MYR3.591
Each (In a Tube of 50)
units
- Off Lineer 45Ω - - 750mA 1 - 6W Short Circuit Through Hole DIPB 8 +150 °C
RS Stock No. 146-5724
Mfr. Part No.TOP258MN
MYR12.655
Each (In a Tube of 50)
units
- Off Lineer 2.9Ω - - 6.88A 1 - 92W Over-Temperature Through Hole SDIPC 10 +150 °C
RS Stock No. 146-5658
Mfr. Part No.TNY277PN
MYR4.82
Each (In a Tube of 50)
units
- Off Lineer 13.5Ω - - 1650mA 1 - 18W Over-Temperature Through Hole DIPC 8 +150 °C
RS Stock No. 146-5643
Mfr. Part No.TNY276PN
MYR4.379
Each (In a Tube of 50)
units
- Off Lineer 24Ω - - 1350mA 1 - 15W Over-Temperature Through Hole DIPC 8 +150 °C
RS Stock No. 145-4618
Mfr. Part No.FSL116HR
Brandonsemi
MYR4.557
Each (In a Tube of 50)
units
- Integrated PWM Controller 10Ω - 265 V 1A 1 - 14W - Through Hole PDIP 8 +105 °C
RS Stock No. 807-6058
Mfr. Part No.FSL116HR
Brandonsemi
MYR4.778
Each (In a Pack of 10)
units
- Integrated PWM Controller 10Ω - 265 V 1A 1 - 14W - Through Hole PDIP 8 +105 °C
RS Stock No. 146-5636
Mfr. Part No.TNY275PN
MYR4.116
Each (In a Tube of 50)
units
- Off Lineer 33Ω - - 560mA 1 - 11.5W Over-Temperature Through Hole DIPC 8 +150 °C
RS Stock No. 145-4321
Mfr. Part No.KA5L0380RYDTU
Brandonsemi
MYR4.601
Each (In a Tube of 50)
units
- Off Lineer 4.6Ω - 30 V 2.41A 1 - 75W - Through Hole TO-220F 4 +85 °C
RS Stock No. 146-5631
Mfr. Part No.LNK364GN
MYR3.923
Each (In a Tube of 50)
units
- Off Lineer 45Ω - - 750mA 1 - 6W Short Circuit Surface Mount SMDB 8 +150 °C
RS Stock No. 146-5632
Mfr. Part No.TNY274PN
MYR3.938
Each (In a Tube of 50)
units
- Off Lineer 48Ω - - 750mA 1 - 8.5W Over-Temperature Through Hole DIPC 8 +150 °C
RS Stock No. 146-5682
Mfr. Part No.TOP255EN
MYR6.741
Each (In a Tube of 48)
units
- Off Lineer 4.7Ω - - 2.72A 1 - 57W Over-Temperature Surface Mount eSIPC 7 +150 °C
RS Stock No. 671-0217
Mfr. Part No.FSQ0565RWDTU
Brandonsemi
MYR14.066
Each (In a Pack of 5)
units
- Quasi Resonant Converter 2.2Ω - 20 V 3.36A 1 - 80W - Through Hole TO-220 6 +85 °C
RS Stock No. 146-5720
Mfr. Part No.TOP258EN
MYR9.891
Each (In a Tube of 48)
units
- Off Lineer 2.9Ω - - 6.88A 1 - 148W Over-Temperature Surface Mount eSIPC 7 +150 °C
RS Stock No. 747-0986
Mfr. Part No.NCP380HMUAJAATBG
Brandonsemi
MYR3.285
Each (In a Pack of 2)
units
- - - - 5.5 V 2.1A 2 2 - - Surface Mount UDFN 6 +125 °C
RS Stock No. 146-5697
Mfr. Part No.TOP256EN
MYR7.791
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. 880-5557
Mfr. Part No.VNN7NV04PTR-E
MYR6.717
Each (In a Pack of 10)
units
- - - - - - - - - - Surface Mount SOT-223 3 + Tab -
RS Stock No. 165-5490
Mfr. Part No.VNN7NV04PTR-E
MYR3.519
Each (On a Reel of 1000)
units
- OMNIFET: Fully Autoprotected Power MOSFET - - 40 V 6A - - - - Surface Mount SOT-223 3 + Tab -