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. 146-5641
Mfr. Part No.TNY275GN
$1.775
Each (In a Tube of 50)
units
- Off Lineer 33Ω - - 560mA 1 - 11.5W Over-Temperature Surface Mount SMDC 8 +150 °C
RS Stock No. 146-5620
Mfr. Part No.LNK564PN
$1.366
Each (In a Tube of 50)
units
- Off Lineer 88Ω - - 375mA 1 - 3W Over-Temperature Through Hole DIPB 8 +150 °C
RS Stock No. 146-8587
Mfr. Part No.LNK564PN
$1.64
Each
units
- Off Lineer 88Ω - - 375mA 1 - 3W Over-Temperature Through Hole DIPB 8 +150 °C
RS Stock No. 146-8555
Mfr. Part No.TNY275PN
$2.16
Each
units
- Off Lineer 33Ω - - 560mA 1 - 11.5W Over-Temperature Through Hole DIPC 8 +150 °C
RS Stock No. 146-5687
Mfr. Part No.TOP255PN
$2.20
Each (In a Tube of 50)
units
- Off Lineer 4.7Ω - - 2.72A 1 - 35W Over-Temperature Through Hole DIPC 8 +150 °C
RS Stock No. 809-1310
Mfr. Part No.VNP35N07-E
$7.705
Each (In a Pack of 2)
units
- OMNIFET: Fully Autoprotected Power MOSFET - - 70 V 35A - - - - Through Hole TO-220 3 -
RS Stock No. 168-7848
Mfr. Part No.VNP35N07-E
$5.38
Each (In a Tube of 50)
units
- OMNIFET: Fully Autoprotected Power MOSFET - - 70 V 35A - - - - Through Hole TO-220 3 -
RS Stock No. 163-2565
Mfr. Part No.NCP380HSN10AAT1G
$0.455
Each (On a Reel of 3000)
units
- - - - 5.5 V 1A 2 2 - - Surface Mount TSOP 5 +125 °C
RS Stock No. 146-8572
Mfr. Part No.TNY278GN
$3.04
Each
units
- Off Lineer - - 1650mA 1 - 21.5W Over-Temperature Surface Mount SMDC 8 +150 °C
RS Stock No. 709-9167
Mfr. Part No.TPS22945DCKR
$1.534
Each (In a Pack of 5)
units
- - - - 5.5 V 0.15A 1 - - - Surface Mount SC-70 5 +85 °C
RS Stock No. 921-5150
Mfr. Part No.TPS22945DCKR
$0.729
Each (On a Reel of 3000)
units
- - - - 5.5 V 0.15A 1 - - - Surface Mount SC-70 5 +85 °C
RS Stock No. 747-0998
Mfr. Part No.NCP380HSN10AAT1G
$1.186
Each (On a Tape of 5)
units
- - - - 5.5 V 1A 2 2 - - Surface Mount TSOP 5 +125 °C
RS Stock No. 146-5636
Mfr. Part No.TNY275PN
$1.615
Each (In a Tube of 50)
units
- Off Lineer 33Ω - - 560mA 1 - 11.5W Over-Temperature Through Hole DIPC 8 +150 °C
RS Stock No. 165-8067
Mfr. Part No.BTS6133DAUMA1
BrandInfineon
$2.058
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. 146-5672
Mfr. Part No.TNY278GN
$2.644
Each (In a Tube of 50)
units
- Off Lineer - - 1650mA 1 - 21.5W Over-Temperature Surface Mount SMDC 8 +150 °C
RS Stock No. 898-6867
Mfr. Part No.BTS6133DAUMA1
BrandInfineon
$4.40
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. 122-3302
Mfr. Part No.AP2152MPG-13
$1.024
Each (On a Reel of 2500)
units
High Side - 150mΩ - 5.5 V 1A 2 - - - Surface Mount MSOP 8 +85 °C
RS Stock No. 124-1415
Mfr. Part No.FDC6324L
$0.356
Each (On a Reel of 3000)
units
- Integrated Load - - 20 V 1A 2 - 0.7W - Surface Mount SOT-23 6 +150 °C
RS Stock No. 146-8582
Mfr. Part No.TNY277GN
$2.63
Each
units
- Off Lineer 13.5Ω - - 1650mA 1 - 18W Over-Temperature Surface Mount SMDC 8 +150 °C
RS Stock No. 168-6831
Mfr. Part No.VN330SP-E
$8.547
Each (In a Tube of 50)
units
High Side Solid State Relay 0.4Ω - 45 V 0.7A 4 - - - Surface Mount PowerSO 10 +150 °C