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. 753-2905
Mfr. Part No.BTS6143DAUMA1
BrandInfineon
$4.71
Each
units
High Side High Side Switch 24mΩ - 38 V 41A 1 - - - Surface Mount TO-252 5 +150 °C
RS Stock No. 919-6674
Mfr. Part No.BTS6143DAUMA1
BrandInfineon
$1.947
Each (On a Reel of 2500)
units
High Side High Side Switch 24mΩ - 38 V 41A 2 - - - Surface Mount TO-252 5 +150 °C
RS Stock No. 752-8261
Mfr. Part No.BTS500551TMAATMA1
BrandInfineon
$9.51
Each
units
High Side High Side Switch 17mΩ - 34 V 70A 1 - - - Surface Mount TO-220 7 +150 °C
RS Stock No. 919-6611
Mfr. Part No.BTS500551TMAATMA1
BrandInfineon
$4.477
Each (On a Reel of 1000)
units
High Side High Side Switch 17mΩ - 34 V 70A 1 - - - Surface Mount TO-220 7 +150 °C
RS Stock No. 753-3080
Mfr. Part No.ISP742RIFUMA1
BrandInfineon
$2.13
Each (In a Pack of 2)
units
High Side High Side Switch 700mΩ - 16 V 0.4A 1 - - - Surface Mount SOIC 8 +85 °C
RS Stock No. 919-6686
Mfr. Part No.ISP742RIFUMA1
BrandInfineon
$0.964
Each (On a Reel of 2500)
units
High Side High Side Switch 700mΩ - 16 V 0.4A 1 - - - Surface Mount SOIC 8 +85 °C
RS Stock No. 110-7115
Mfr. Part No.ITS4300SSJDXUMA1
BrandInfineon
$1.747
Each (In a Pack of 12)
units
High Side High Side Power Switch 600mΩ - 40 V - 1 - - - Surface Mount DSO 8 +125 °C
RS Stock No. 919-6595
Mfr. Part No.BTS711L1XUMA1
BrandInfineon
$3.867
Each (On a Reel of 1000)
units
- High Speed 0.165Ω - 16 V 7.5A 4 - - - Surface Mount DSO 20 +150 °C
RS Stock No. 445-2326
Mfr. Part No.BTS711L1XUMA1
BrandInfineon
$8.43
Each
units
- High Speed Switch 0.165Ω - 16 V 7.5A 4 - - - Surface Mount DSO 20 +150 °C
RS Stock No. 166-0787
Mfr. Part No.ITS4300SSJDXUMA1
BrandInfineon
$0.918
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. 165-8067
Mfr. Part No.BTS6133DAUMA1
BrandInfineon
$2.031
Each (On a Reel of 2500)
units
High Side High Side Switch 26mΩ - 38 V 8A 1 - - - Surface Mount TO-252 5 +150 °C
RS Stock No. 898-6867
Mfr. Part No.BTS6133DAUMA1
BrandInfineon
$4.21
Each (In a Pack of 4)
units
High Side High Side Switch 26mΩ - 38 V 8A 1 - - - Surface Mount TO-252 5 +150 °C
RS Stock No. 919-6618
Mfr. Part No.BTS133TCBUMA1
BrandInfineon
$1.96
Each (On a Reel of 1000)
units
Low Side Low Side Switch 120mΩ - 73 V 7A 1 - - - Surface Mount TO-263 3 +150 °C
RS Stock No. 752-8268
Mfr. Part No.BTS133TCBUMA1
BrandInfineon
$4.08
Each
units
Low Side Low Side Switch 120mΩ - 73 V 7A 1 - - - Surface Mount TO-263 3 +150 °C
RS Stock No. 919-6655
Mfr. Part No.BTS428L2ATMA1
BrandInfineon
$2.253
Each (On a Reel of 2500)
units
High Side High Side Switch 120mΩ - 41 V 5.8A 1 - - - Surface Mount TO-252 5 +150 °C
RS Stock No. 166-0815
Mfr. Part No.BTS51802EKAXUMA1
BrandInfineon
$0.94
Each (On a Reel of 2500)
units
High Side High Side Power Switch 360mΩ - 28 V 2A 2 - - - Surface Mount DSO-14-40 14 +150 °C
RS Stock No. 897-7248
Mfr. Part No.BTS3205GXUMA1
BrandInfineon
$1.354
Each (In a Pack of 25)
units
Low Side Smart Low-Side 1.9Ω - 10 V - 1 - - - Surface Mount SOIC 8 +150 °C
RS Stock No. 165-8061
Mfr. Part No.BTS3205GXUMA1
BrandInfineon
$0.655
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. 753-2876
Mfr. Part No.BTS428L2ATMA1
BrandInfineon
$4.27
Each
units
High Side High Side Switch 120mΩ - 41 V 5.8A 1 - - - Surface Mount TO-252 5 +150 °C
RS Stock No. 110-7778
Mfr. Part No.BTS51802EKAXUMA1
BrandInfineon
$1.953
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