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. 166-2274
Mfr. Part No.FR015L3EZ
$0.325
Each (On a Reel of 3000)
units
- Reverse Polarity Protector 30mΩ - 1.3 V 8A 1 - - - Surface Mount MLP 6 +125 °C
RS Stock No. 162-7144
Mfr. Part No.TPS2105DBVT
$1.859
Each (On a Reel of 250)
units
- - - - 5.5 V 500mA 1 2 - - Surface Mount SOT-23 5 +85 °C
RS Stock No. 671-0148
Mfr. Part No.FSCQ1565RTYDTU
$4.924
Each (In a Pack of 5)
units
- - 0.53Ω - - - 1 - - - Through Hole TO-220F 5 +85 °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. 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
RS Stock No. 146-5625
Mfr. Part No.LNK362GN
$1.082
Each (In a Tube of 50)
units
- Off Lineer 88Ω - - 375mA 1 - 2.6W Short Circuit Surface Mount SMDB 8 +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. 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. 880-5541
Mfr. Part No.VND5160JTR-E
$3.89
Each (In a Pack of 5)
units
High Side High Side Driver 320mΩ - 36 V 5A 2 - - - Surface Mount PowerSSO 12 +150 °C
RS Stock No. 822-8827
Mfr. Part No.AP2280-2FMG-7
$0.776
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. 165-5311
Mfr. Part No.VND5160JTR-E
$1.962
Each (On a Reel of 2500)
units
- - - - - - - - - - - - - -
RS Stock No. 662-2394
Mfr. Part No.TPS2105DBVT
$3.118
Each (In a Pack of 5)
units
- - - - 5.5 V 500mA 1 2 - - Surface Mount SOT-23 5 +85 °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. 166-2720
Mfr. Part No.FSCQ1565RTYDTU
$3.65
Each (In a Tube of 50)
units
- - 0.53Ω - - - 1 - - - Through Hole TO-220F 5 +85 °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. 877-3122
Mfr. Part No.VN5160STR-E
$1.733
Each (In a Pack of 10)
units
High Side High Side Driver Switch 320mΩ - 36 V 5A 1 - - - Surface Mount SOIC 8 +150 °C
RS Stock No. 145-4415
Mfr. Part No.FSFR2100XSL
$5.544
Each (In a Tube of 19)
units
- Resonant Converter 0.51Ω - 400 V - 1 - 180W - Through Hole SIP 10 +130 °C
RS Stock No. 162-7923
Mfr. Part No.TPS2556DRBT
$2.48
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. 169-7368
Mfr. Part No.AP2280-2FMG-7
$0.466
Each (On a Reel of 3000)
units
- Load 250mΩ - 6 V 2A 1 - 1.26W - Surface Mount DFN-2018 6 +85 °C
RS Stock No. 862-9088
Mfr. Part No.FSFR2100XSL
$7.83
Each (In a Pack of 2)
units
- Resonant Converter 0.51Ω - 400 V - 1 - 180W - Through Hole SIP 10 +130 °C