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. 145-4391
Mfr. Part No.FSFR1800XS
MYR9.20
Each (In a Tube of 19)
units
- - 0.95Ω - 400 V 7A 1 - 260W - Through Hole SIP 9 +135 °C
RS Stock No. 165-5489
Mfr. Part No.VNN3NV04PTR-E
MYR2.694
Each (On a Reel of 1000)
units
- OMNIFET: Fully Autoprotected Power MOSFET - - 40 V 3.5A - - - - Surface Mount SOT-223 3 + Tab -
RS Stock No. 162-8784
Mfr. Part No.TPS2561DRCT
MYR10.021
Each (On a Reel of 250)
units
- Distribution 70mΩ - 6.5 V 2.5A 2 - 2.403W - Surface Mount SON 10 +85 °C
RS Stock No. 124-6468
Mfr. Part No.BD2242G-GTR
BrandROHM
MYR2.583
Each (In a Pack of 15)
units
High Side High Side 89mΩ 1 5.5 V - - - - - Surface Mount SSOP 6 +85 °C
RS Stock No. 880-5544
Mfr. Part No.VN920B5-E
MYR13.45
Each (In a Pack of 5)
units
High Side Driver 55mΩ - 36 V 30A 1 - - - Surface Mount P2PAK 5 +150 °C
RS Stock No. 753-2894
Mfr. Part No.BTS5016SDAAUMA1
BrandInfineon
MYR11.905
Each (In a Pack of 2)
units
High Side High Side Switch 42mΩ - 38 V 6.5A 2 - - - Surface Mount TO-252 5 +150 °C
RS Stock No. 714-1173
Mfr. Part No.VN340SPTR-E
MYR21.72
Each
units
- - - - - - 4 - - - Surface Mount PowerSO 10 -
RS Stock No. 919-6658
Mfr. Part No.BTS462TATMA1
BrandInfineon
MYR5.425
Each (On a Reel of 2500)
units
High Side High Side Switch 200mΩ - 16 V 4.4A 1 - - - Surface Mount TO-252 5 +150 °C
RS Stock No. 124-8771
Mfr. Part No.BSP75NHUMA1
BrandInfineon
MYR3.031
Each (On a Reel of 4000)
units
Low Side Low Side Switch 550mΩ - 60 V 0.7A 1 - - - Surface Mount SOT-223 3 + Tab +150 °C
RS Stock No. 862-9072
Mfr. Part No.FSFA2100
MYR29.82
Each
units
- PWM Converter 0.38Ω - 400 V - 1 - 200W - Through Hole SIP 10 +130 °C
RS Stock No. 862-9084
Mfr. Part No.FSFR1700XSL
MYR14.755
Each (In a Pack of 2)
units
- Resonant Converter 1.25Ω - 400 V - 1 - 100W - Through Hole SIP 10 +130 °C
RS Stock No. 828-7668
Mfr. Part No.AP2553W6-7
MYR1.691
Each (In a Pack of 10)
units
- Power Switch 135mΩ - 5.5 V 2.1A 1 - 340mW - Surface Mount SOT-26 6 +85 °C
RS Stock No. 146-5677
Mfr. Part No.TOP254GN
MYR6.111
Each (In a Tube of 50)
units
- Off Lineer 9.7Ω - - 2.08A 1 - 30W Over-Temperature Surface Mount SMDC 8 +150 °C
RS Stock No. 146-5722
Mfr. Part No.LNK306DN
MYR4.865
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. 880-5553
Mfr. Part No.VNN3NV04PTR-E
MYR3.87
Each (In a Pack of 10)
units
- - - - - - - - - - Surface Mount SOT-223 3 + Tab -
RS Stock No. 145-4490
Mfr. Part No.FSDM311A
MYR3.749
Each (In a Tube of 50)
units
- - 14Ω - - - 1 - - - Through Hole PDIP 8 +85 °C
RS Stock No. 920-8953
Mfr. Part No.VNP10N07-E
MYR6.92
Each (In a Tube of 50)
units
- OMNIFET: Fully Autoprotected Power MOSFET - - 70 V 10A 1 - - - Through Hole TO-220 3 -
RS Stock No. 911-1017
Mfr. Part No.BSP452HUMA1
BrandInfineon
MYR4.866
Each (On a Reel of 4000)
units
- - - - - - - - - - Surface Mount SOT-223 3 + Tab +150 °C
RS Stock No. 907-4968
Mfr. Part No.AUIPS7081STRL
BrandInfineon
MYR16.20
Each (In a Pack of 4)
units
High Side High Side Switch 130mΩ - 5.5 V 2.3A 1 - - - Surface Mount D2Pak 5 +150 °C
RS Stock No. 122-3387
Mfr. Part No.AP2553W6-7
MYR0.973
Each (On a Reel of 3000)
units
- Interface 135mΩ - 5.5 V 2.1A 1 - 340mW - Surface Mount SOT-26 6 +85 °C