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. 110-7778
Mfr. Part No.BTS51802EKAXUMA1
BrandInfineon
$2.058
Each (In a Pack of 10)
units
High Side High Side Power Switch 360mΩ - 28 V 2A 2 - - - Surface Mount DSO-14-40 14 +150 °C
RS Stock No. 146-5647
Mfr. Part No.TNY276GN
$1.89
Each (In a Tube of 50)
units
- Off Lineer 24Ω - - 1350mA 1 - 15W Over-Temperature Surface Mount SMDC 8 +150 °C
RS Stock No. 822-8827
Mfr. Part No.AP2280-2FMG-7
$0.804
Each (In a Pack of 20)
units
- Load 250mΩ - 6 V 2A 1 - 1.26W - Surface Mount DFN-2018 6 +85 °C
RS Stock No. 753-2876
Mfr. Part No.BTS428L2ATMA1
BrandInfineon
$4.35
Each
units
High Side High Side Switch 120mΩ - 41 V 5.8A 1 - - - Surface Mount TO-252 5 +150 °C
RS Stock No. 166-3304
Mfr. Part No.FPF2007
$0.669
Each (On a Reel of 3000)
units
- Load Management Switch 1.2Ω - - - 1 - - - Surface Mount SC-70 5 +85 °C
RS Stock No. 146-5627
Mfr. Part No.LNK363PN
$1.314
Each (In a Tube of 50)
units
- Off Lineer 54Ω - - 750mA 1 - 4.7W Short Circuit Through Hole DIPB 8 +150 °C
RS Stock No. 110-7777
Mfr. Part No.BTS50301EJAXUMA1
BrandInfineon
$2.195
Each (In a Pack of 10)
units
High Side High Side Power Switch 60mΩ - 28 V 5A 1 - - - Surface Mount DSO-8-43 8 +150 °C
RS Stock No. 124-6490
Mfr. Part No.BD82065FVJ-E2
BrandROHM
$1.044
Each (In a Pack of 10)
units
High Side High Side 70mΩ 1 5.5 V - - - - - Surface Mount TSSOP-B8J 8 +85 °C
RS Stock No. 126-7232
Mfr. Part No.AVS12CB
$4.86
Each
units
- - - - - - - - - - Through Hole TO-220AB 3 +70 °C
RS Stock No. 911-1017
Mfr. Part No.BSP452HUMA1
BrandInfineon
$1.341
Each (On a Reel of 4000)
units
- - - - - - - - - - Surface Mount SOT-223 3 + Tab +150 °C
RS Stock No. 919-6696
Mfr. Part No.ISP772TFUMA1
BrandInfineon
$1.46
Each (On a Reel of 2500)
units
High Side High Side Switch 120mΩ - 16 V 3.1A 1 - - - Surface Mount SOIC 8 +85 °C
RS Stock No. 880-5544
Mfr. Part No.VN920B5-E
$4.996
Each (In a Pack of 5)
units
High Side Driver 55mΩ - 36 V 30A 1 - - - Surface Mount P2PAK 5 +150 °C
RS Stock No. 166-1196
Mfr. Part No.BTS611L1E3128ABUMA1
BrandInfineon
$2.661
Each (On a Reel of 1000)
units
High Side High Side Power Switch 400mΩ - 43 V 4.4A 2 - - - Surface Mount TO-263 7 +150 °C
RS Stock No. 880-5557
Mfr. Part No.VNN7NV04PTR-E
$1.985
Each (In a Pack of 10)
units
- - - - - - - - - - Surface Mount SOT-223 3 + Tab -
RS Stock No. 865-0868
Mfr. Part No.FAN3241TMX
$2.258
Each (In a Pack of 5)
units
- - - - 60 V 5mA 2 - - - Surface Mount SOIC 8 +105 °C
RS Stock No. 803-1857
Mfr. Part No.FPF2701MX
$4.474
Each (In a Pack of 5)
units
- - - - 36 V 2A 1 1 - - Surface Mount SOIC 8 +85 °C
RS Stock No. 921-0455
Mfr. Part No.AP22802AW5-7
$0.431
Each (In a Pack of 50)
units
- Distribution 60mΩ - 5.5 V 2A 1 - - - Surface Mount SOT-25 5 +85 °C
RS Stock No. 166-2917
Mfr. Part No.FPF2701MX
$1.859
Each (On a Reel of 2500)
units
- - - - 36 V 2A 1 1 - - Surface Mount SOIC 8 +85 °C
RS Stock No. 826-8235
Mfr. Part No.BTS721L1XUMA1
BrandInfineon
$9.72
Each
units
- - - - - - - - - - Surface Mount DSO 20 -
RS Stock No. 168-8932
Mfr. Part No.VN920B5-E
$4.249
Each (In a Tube of 50)
units
High Side Driver 55mΩ - 36 V 30A 1 - - - Surface Mount P2PAK 5 +150 °C