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. 165-8024
Mfr. Part No.BTS442E2E3062ABUMA1
BrandInfineon
MYR18.109
Each (On a Reel of 1000)
units
High Side High Side Switch 35mΩ - 42 V 21A 1 - - - Surface Mount TO-263 5 +150 °C
RS Stock No. 747-0986
Mfr. Part No.NCP380HMUAJAATBG
MYR3.245
Each (In a Pack of 2)
units
- - - - 5.5 V 2.1A 2 2 - - Surface Mount UDFN 6 +125 °C
RS Stock No. 898-6965
Mfr. Part No.BTS442E2E3062ABUMA1
BrandInfineon
MYR38.24
Each (In a Pack of 2)
units
High Side High Side Switch 35mΩ - 42 V 21A 1 - - - Surface Mount TO-263 5 +150 °C
RS Stock No. 146-5720
Mfr. Part No.TOP258EN
MYR9.891
Each (In a Tube of 48)
units
- Off Lineer 2.9Ω - - 6.88A 1 - 148W Over-Temperature Surface Mount ESIPC 7 +150 °C
RS Stock No. 146-5697
Mfr. Part No.TOP256EN
MYR7.791
Each (In a Tube of 48)
units
- Off Lineer 4.75Ω - - 4.08A 1 - 86W Over-Temperature Surface Mount ESIPC 7 +150 °C
RS Stock No. 880-5557
Mfr. Part No.VNN7NV04PTR-E
MYR5.429
Each (In a Pack of 10)
units
- - - - - - - - - - Surface Mount SOT-223 3 + Tab -
RS Stock No. 166-1196
Mfr. Part No.BTS611L1E3128ABUMA1
BrandInfineon
MYR9.479
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. 146-5687
Mfr. Part No.TOP255PN
MYR6.657
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. 110-6370
Mfr. Part No.STMPS2161STR
MYR2.216
Each (In a Pack of 25)
units
High Side High Side Power Switch 200mΩ - 5.5 V 1A 1 - - - Surface Mount SOT-23 5 +85 °C
RS Stock No. 820-9094
Mfr. Part No.ADP195ACBZ-R7
MYR4.284
Each (In a Pack of 10)
units
High Side High Side Switch - - 3.6 V 200mA 1 - - - Surface Mount WLCSP 4 +85 °C
RS Stock No. 124-1345
Mfr. Part No.FDC6330L
MYR0.862
Each (On a Reel of 3000)
units
- Integrated Load 0.125Ω - 20 V 2.3A 2 - 0.7W - Surface Mount SOT-23 6 +150 °C
RS Stock No. 160-4567
Mfr. Part No.ADP195ACBZ-R7
MYR2.809
Each (On a Reel of 3000)
units
High Side High Side Switch - - 3.6 V 200mA 1 - - - Surface Mount WLCSP 4 +85 °C
RS Stock No. 620-6333
Mfr. Part No.TPS2211AIDB
MYR9.41
Each (In a Pack of 5)
units
- - - - - - - - - - Surface Mount SSOP 16 +85 °C
RS Stock No. 920-8947
Mfr. Part No.L6376D
MYR33.061
Each (In a Tube of 31)
units
- - - - - 500mA 4 4 - - Surface Mount PowerSO 20 +85 °C
RS Stock No. 825-9143
Mfr. Part No.BTS724GXUMA1
BrandInfineon
MYR19.488
Each (In a Pack of 5)
units
High Side High Side Switch 180mΩ - 40 V 3.3A 4 - - - Surface Mount DSO 20 +150 °C
RS Stock No. 714-7884
Mfr. Part No.L6376D
MYR35.76
Each
units
- - - - - - 4 4 - - Surface Mount PowerSO 20 +85 °C
RS Stock No. 821-5294
Mfr. Part No.NCP45520IMNTWG-H
MYR4.347
Each (In a Pack of 20)
units
- Controlled Load 22.5mΩ - 5.5 V - 1 - 2.5W - Surface Mount DFN 8 +85 °C
RS Stock No. 714-1170
Mfr. Part No.VN340SP-E
MYR23.89
Each
units
High Side High Side Solid State Relay 0.2Ω - 36 V 0.7A 4 - - - Surface Mount SOIC 10 +150 °C
RS Stock No. 761-3372
Mfr. Part No.FDC6330L
MYR2.09
Each (In a Pack of 10)
units
- Integrated Load Switch 0.125Ω - 20 V 2.3A 2 - 0.7W - Surface Mount SOT-23 6 +150 °C
RS Stock No. 110-7454
Mfr. Part No.BTS409L1E3062ABUMA1
BrandInfineon
MYR16.664
Each (On a Tape of 5)
units
High Side High Side Power Switch 400mΩ - 43 V 2.3A 1 - - - Surface Mount TO-263 5 +150 °C