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. 162-7894
Mfr. Part No.TPS2065CDBVT-2
£0.457
Each (On a Reel of 250)
Units
- Distribution 154mΩ - 5.5 V 1A 1 - - - Surface Mount SOT-23 5 +85 °C
RS Stock No. 919-6636
Mfr. Part No.BSP762TXUMA1
BrandInfineon
£0.716
Each (On a Reel of 2500)
Units
High Side High Side Switch 200mΩ - 16 V 2.4A 1 - - - Surface Mount SOIC 8 +150 °C
RS Stock No. 671-0172
Mfr. Part No.FSDM311A
£0.296
Each (In a Pack of 5)
Units
- - 14Ω - - - 1 - - - Through Hole PDIP 8 +85 °C
RS Stock No. 165-8061
Mfr. Part No.BTS3205GXUMA1
BrandInfineon
£0.319
Each (On a Reel of 2500)
Units
Low Side Smart Low-Side 1.9Ω - 10 V 30µA 1 - - - Surface Mount SOIC 8 +150 °C
RS Stock No. 825-9055
Mfr. Part No.BSP752RXUMA2
BrandInfineon
£1.048
Each (In a Pack of 10)
Units
High Side High Side Switch 380mΩ - 52 V 1.7A 1 - - - Surface Mount DSO 8 +150 °C
RS Stock No. 821-5281
Mfr. Part No.NCP4545IMNTWG
£0.343
Each (In a Pack of 10)
Units
- Controlled Load 7mΩ - 5.5 V - 1 - 1.98W - Surface Mount QFN 18 +70 °C
RS Stock No. 165-5418
Mfr. Part No.VN5016AJTR-E
£0.94
Each (On a Reel of 2500)
Units
- - - - - - - - - - - - - -
RS Stock No. 791-6292
Mfr. Part No.NUD3160LT1G
£0.27
Each (In a Pack of 20)
Units
- - - - 60 V - 1 - - - Surface Mount SOT-23 3 +125 °C
RS Stock No. 133-6713
Mfr. Part No.BTS50162EKAXUMA1
BrandInfineon
£1.026
Each (On a Reel of 2500)
Units
High Side Smart High-Side 32mΩ - 28 V 8A 6 - - - Surface Mount DSO 14 +150 °C
RS Stock No. 165-8542
Mfr. Part No.AP2191DWG-7
£0.151
Each (On a Reel of 3000)
Units
High Side - 115mΩ - 5.5 V 2.6A 1 - - - Surface Mount SOT-25 5 +85 °C
RS Stock No. 145-7231
Mfr. Part No.TPS2061DBVT
£0.845
Each (On a Reel of 250)
Units
- Distribution 150mΩ - 5.5 V 1A 1 - 704mW - Surface Mount SOT-23 5 +70 °C
RS Stock No. 862-9145
Mfr. Part No.FSQ0265RLX
£0.184
Each (In a Pack of 5)
Units
- PWM Controller 6mΩ - - 1.2A 1 - 14W - Surface Mount LSOP 8 +85 °C
RS Stock No. 919-8755
Mfr. Part No.BTS4141NHUMA1
BrandInfineon
£0.728
Each (On a Reel of 4000)
Units
High Side High Side Switch 320mΩ - 45 V 0.7A 1 - - - Surface Mount SOT-223 3 + Tab +125 °C
RS Stock No. 808-8897
Mfr. Part No.FPF1008
£0.533
Each (On a Tape of 10)
Units
- MOSFET Load 250mΩ - 5.5 V 1.5A 2 - 1.2W - Surface Mount MLP 6 +85 °C
RS Stock No. 162-7141
Mfr. Part No.TPS2064DGN
£1.733
Each (In a Tube of 80)
Units
High Side USB Power 70mΩ - 5.5 V 2.1A 4 - - - Surface Mount MSOP 8 +70 °C
RS Stock No. 166-0882
Mfr. Part No.BTS50202EKAXUMA2
BrandInfineon
£1.092
Each (On a Reel of 2500)
Units
High Side High Side Power Switch 44mΩ - 28 V 7A 2 - - - Surface Mount DSO-14-40 14 +150 °C
RS Stock No. 862-9075
Mfr. Part No.FSD156MRBN
£0.184
Each (In a Pack of 5)
Units
- PWM Controller 2.3Ω - - 1.6A 1 - 23W - Through Hole PDIP 8 +125 °C
RS Stock No. 166-0787
Mfr. Part No.ITS4300SSJDXUMA1
BrandInfineon
£0.426
Each (On a Reel of 2500)
Units
High Side High Side Power Switch 600mΩ - 40 V - 1 - - - Surface Mount DSO 8 +125 °C
RS Stock No. 177-2937
Mfr. Part No.MIC94043YFL-TR
BrandMicrochip
£0.405
Each (On a Reel of 5000)
Units
High Side Load 55mΩ 1 5.5 V 3 (Continuous)A - - - - Surface Mount MLF 4 +125 °C
RS Stock No. 189-0186
Mfr. Part No.FPF2283CUCX
£0.417
Each (On a Reel of 3000)
Units
- OVP with Ultra Low On-resistance 7.5mΩ - 23 V 7A 1 - - - Surface Mount WLCSP 20 +85 °C
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