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. 620-6333
Mfr. Part No.TPS2211AIDB
PHP103.93
Each (In a Pack of 5)
units
- - - - - - - - - - Surface Mount SSOP 16 +85 °C
RS Stock No. 162-7135
Mfr. Part No.TPS2021D
PHP126.246
Each (In a Tube of 75)
units
High Side USB Power 33mΩ - 5.5 V 0.9A 4 - - - Surface Mount SOIC 8 +85 °C
RS Stock No. 662-2413
Mfr. Part No.TPS2021D
PHP154.07
Each (In a Pack of 5)
units
High Side USB Power 33mΩ - 5.5 V 0.9A 4 - - - Surface Mount SOIC 8 +85 °C
RS Stock No. 517-1084
Mfr. Part No.TPS2044BD
PHP152.292
Each (In a Pack of 5)
units
High Side USB Power 70mΩ - 5.5 V 1.25A 8 - - - Surface Mount SOIC 16 +85 °C
RS Stock No. 922-3000
Mfr. Part No.TPS2111APW
PHP103.929
Each (In a Tube of 150)
units
- - - - 5.5 V 1.25A 1 2 - - Surface Mount TSSOP 8 +85 °C
RS Stock No. 812-0256
Mfr. Part No.TPS2041CDBVT
PHP36.372
Each (In a Pack of 10)
units
- Distribution 154mΩ - 5.5 V 0.5A 1 - - - Surface Mount SOT-23 5 +85 °C
RS Stock No. 162-9878
Mfr. Part No.TPD3S014DBVR
PHP45.579
Each (On a Reel of 3000)
units
- Current Limit 130mΩ - 5.5 V - 1 - - - Surface Mount SOT-23 6 +85 °C
RS Stock No. 145-0665
Mfr. Part No.TPS2061D
PHP76.13
Each (In a Tube of 75)
units
High Side USB Power 70mΩ - 5.5 V 1.5A 4 - - - Surface Mount SOIC 8 +85 °C
RS Stock No. 665-8866
Mfr. Part No.TPS2111APW
PHP151.778
Each (In a Pack of 5)
units
- - - - 5.5 V 1.25A 1 2 - - Surface Mount TSSOP 8 +85 °C
RS Stock No. 662-2381
Mfr. Part No.TPS2041BDBVT
PHP61.746
Each (In a Pack of 5)
units
High Side USB Power 95mΩ - 5.5 V 1.25A 2 - - - Surface Mount SOT-23 5 +85 °C
RS Stock No. 921-5074
Mfr. Part No.TPS2552DBVT
PHP71.433
Each (On a Reel of 250)
units
- USB Power 85mΩ - 6.5 V 1.2A 1 - - - Surface Mount SOT-23 6 +85 °C
RS Stock No. 162-7905
Mfr. Part No.TPS22929DDBVT
PHP25.368
Each (On a Reel of 250)
units
- Load Management 200mΩ - 5.5 V 1.8A 1 - 463mW - Surface Mount SOT-23 6 +85 °C
RS Stock No. 812-0341
Mfr. Part No.TPS22941DCKR
PHP49.602
Each (In a Pack of 25)
units
- Load Management 1.2Ω - 5.5 V 20mA 1 - 122mW - Surface Mount SC-70 6 +85 °C
RS Stock No. 812-0411
Mfr. Part No.TPS2553DBVT-1
PHP60.323
Each (On a Tape of 10)
units
- Distribution 135mΩ - 6.5 V 1.5A 1 - 625mW - Surface Mount SOT-23 6 +85 °C
RS Stock No. 665-8832
Mfr. Part No.TPS2046BD
PHP118.336
Each (In a Pack of 5)
units
- - - - 5.5 V 0.7A 2 1 - - Surface Mount SOIC 8 +85 °C
RS Stock No. 162-8596
Mfr. Part No.LM5060MM/NOPB
PHP87.607
Each (On a Reel of 1000)
units
- - - - 65 V - 2 5 - - Surface Mount VSSOP 10 +125 °C
RS Stock No. 162-7923
Mfr. Part No.TPS2556DRBT
PHP85.05
Each (On a Reel of 250)
units
- Distribution 35mΩ - 6.5 V 5A 1 - 2.403W - Surface Mount SON 8 +85 °C
RS Stock No. 662-2384
Mfr. Part No.TPS2051BDBVT
PHP60.516
Each (In a Pack of 5)
units
High Side USB Power 95mΩ - 5.5 V 1.25A 2 - - - Surface Mount SOT-23 5 +85 °C
RS Stock No. 812-0357
Mfr. Part No.TPS22946YZPR
PHP49.602
Each (On a Tape of 10)
units
- Load Management - 5.5 V - 1 - 810.63mW - Surface Mount DSBGA 6 +85 °C
RS Stock No. 709-9167
Mfr. Part No.TPS22945DCKR
PHP54.538
Each (In a Pack of 5)
units
- - - - 5.5 V 0.15A 1 - - - Surface Mount SC-70 5 +85 °C