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. 145-5326
Mfr. Part No.FSFR1800HSL
€2.219
Each (In a Tube of 19)
units
- Integrated 0.95Ω - 25 V 7A 2 - 260W - Through Hole SIP 10 +130 °C
RS Stock No. 760-6024
Mfr. Part No.FSFR1800HSL
€2.62
Each
units
- Integrated 0.95Ω - 25 V 7A 2 - 260W - Through Hole SIP 10 +130 °C
RS Stock No. 862-9088
Mfr. Part No.FSFR2100XSL
€3.465
Each (In a Pack of 2)
units
- Resonant Converter 0.51Ω - 400 V - 1 - 180W - Through Hole SIP 10 +130 °C
RS Stock No. 145-4321
Mfr. Part No.KA5L0380RYDTU
€0.605
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. 145-4415
Mfr. Part No.FSFR2100XSL
€2.953
Each (In a Tube of 19)
units
- Resonant Converter 0.51Ω - 400 V - 1 - 180W - Through Hole SIP 10 +130 °C
RS Stock No. 145-4490
Mfr. Part No.FSDM311A
€0.283
Each (In a Tube of 50)
units
- - 14Ω - - - 1 - - - Through Hole PDIP 8 +85 °C
RS Stock No. 862-8791
Mfr. Part No.FR015L3EZ
€0.393
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. 166-2274
Mfr. Part No.FR015L3EZ
€0.19
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. 671-0172
Mfr. Part No.FSDM311A
€0.324
Each (In a Pack of 5)
units
- - 14Ω - - - 1 - - - Through Hole PDIP 8 +85 °C
RS Stock No. 739-5015
Mfr. Part No.FPF2163
€0.36
Each (In a Pack of 5)
units
- Full Function Load 0.18Ω - 5.5 V 1.5A 1 - 1.2W - Surface Mount MLP 6 +85 °C
RS Stock No. 807-6030
Mfr. Part No.FSFR1800XS
€1.165
Each (In a Pack of 2)
units
- - 0.95Ω - 400 V 7A 1 - 260W - Through Hole SIP 9 +135 °C
RS Stock No. 178-4474
Mfr. Part No.FUSB307BMPX
€0.864
Each (In a Pack of 10)
units
- USB - - 21.5 V 210.5mA 1 - - - Surface Mount WQFN 16 +85 °C
RS Stock No. 807-6055
Mfr. Part No.FSGM0765RWDTU
€0.944
Each (In a Pack of 5)
units
- Integrated PWM Controller 1.6Ω - 265 V 6.4A 1 - 70W - Through Hole TO-220F 6 +125 °C
RS Stock No. 186-1261
Mfr. Part No.FSA1153UCX
€0.279
Each (On a Reel of 3000)
units
- USB - 5.5 V - - - - - Surface Mount WLCSP 12 +85 °C
RS Stock No. 166-3587
Mfr. Part No.FSUSB30L10X
€0.191
Each (On a Reel of 5000)
units
- USB 10Ω - 5.5 V - 1 - - - Surface Mount MicroPak 10 +85 °C
RS Stock No. 862-9145
Mfr. Part No.FSQ0265RLX
€0.44
Each (In a Pack of 5)
units
- PWM Controller 6mΩ - - 1.2A 1 - 14W - Surface Mount LSOP 8 +85 °C
RS Stock No. 166-2502
Mfr. Part No.FPF2163
€0.356
Each (On a Reel of 3000)
units
- Full Function Load 0.18Ω - 5.5 V 1.5A 1 - 1.2W - Surface Mount MLP 6 +85 °C
RS Stock No. 205-2422
Mfr. Part No.NCV81599MWTXG
€0.921
Each (On a Reel of 5000)
units
- Adjustable - - 28 V - 2 - - - Surface Mount QFNW-32 32 -
RS Stock No. 145-5310
Mfr. Part No.FSCQ0965RTYDTU
€1.476
Each (In a Tube of 50)
units
- - - - - 1 - - - Through Hole TO-220F 5 +85 °C
RS Stock No. 124-1410
Mfr. Part No.FPF2004
€0.325
Each (On a Reel of 3000)
units
- MOSFET Load 1.2Ω - 5.5 V 200mA 1 - 250mW - Surface Mount SC-70 5 +85 °C