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. 165-8308
Mfr. Part No.AP22802AW5-7
TWD3.00
Each (On a Reel of 3000)
units
- Distribution 60mΩ - 5.5 V 2A 1 - - - Surface Mount SOT-25 5 +85 °C
RS Stock No. 195-8828
Mfr. Part No.FSL518HPG
TWD21.00
Each (On a Reel of 3000)
units
- High Performanceer - - - 2mA - - - - Through Hole PDIP 7 +125 °C
RS Stock No. 172-3385
Mfr. Part No.NXH80T120L2Q0S1G
TWD2,607.00
1 Pack of 1
Pack(s)
- Power Module - - 1200 V 80A 1 - 125mW - Screw Mount Q0PACK 16 +150 °C
RS Stock No. 145-4414
Mfr. Part No.FSFR1700XS
TWD100.40
Each (In a Tube of 19)
units
- Resonant Converter 1.25Ω - 400 V - 1 - 100W - Through Hole SIP 10 +130 °C
RS Stock No. 146-5689
Mfr. Part No.TOP255GN
TWD69.20
Each (In a Tube of 50)
units
- Off Lineer 4.7Ω - - 2.72A 1 - 35W Over-Temperature Surface Mount SMDC 8 +150 °C
RS Stock No. 124-8772
Mfr. Part No.BSP742RXUMA1
BrandInfineon
TWD22.80
Each (On a Reel of 2500)
units
High Side High Side Switch 700mΩ - 34 V 0.4A 1 - - - Surface Mount DSO 8 +150 °C
RS Stock No. 124-5360
Mfr. Part No.NCP45520IMNTWG-H
TWD15.20
Each (On a Reel of 3000)
units
- Controlled Load 22.5mΩ - 5.5 V - 1 - 2.5W - Surface Mount DFN 8 +85 °C
RS Stock No. 177-0562
Mfr. Part No.MIC2075-1YMM
BrandMicrochip
TWD28.20
Each (In a Pack of 20)
units
High Side USB Power 160mΩ - 5.5 V 0.85A 1 - - - Surface Mount MSOP 8 +85 °C
RS Stock No. 144-5300
Mfr. Part No.TBD62083AFG(Z,EL)
BrandToshiba
TWD27.10
Each (In a Pack of 10)
units
High Side High Side - 8 0.6 V, 25 V 0.1mA - - - - Surface Mount SOP 18 +85 °C
RS Stock No. 110-7115
Mfr. Part No.ITS4300SSJDXUMA1
BrandInfineon
TWD33.20
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. 671-0242
Mfr. Part No.FSQ321
TWD40.60
Each (In a Pack of 5)
units
- - 14Ω - - - 1 - - - Through Hole PDIP W 8 +85 °C
RS Stock No. 686-8489
Mfr. Part No.L6375S
TWD128.00
Each
units
- - - - - - 1 - - - Surface Mount SOIC 8 +85 °C
RS Stock No. 807-6030
Mfr. Part No.FSFR1800XS
TWD119.00
Each (In a Pack of 2)
units
- - 0.95Ω - 400 V 7A 1 - 260W - Through Hole SIP 9 +135 °C
RS Stock No. 808-8916
Mfr. Part No.FPF2004
TWD31.30
Each (In a Pack of 10)
units
- MOSFET Load 1.2Ω - 5.5 V 200mA 1 - 250mW - Surface Mount SC-70 5 +85 °C
RS Stock No. 206-0254
Mfr. Part No.AP22815BWT-7
TWD13.90
Each (On a Reel of 3000)
units
High Side Load Switche 50mΩ 1 5.5 V 3A - - - - - TSOT25 5 -
RS Stock No. 124-8748
Mfr. Part No.BTS740S2XUMA1
BrandInfineon
TWD90.90
Each (On a Reel of 1000)
units
- - - - - - - - - - Surface Mount DSO 20 +150 °C
RS Stock No. 191-3302
Mfr. Part No.MAX14900EAGM+CKT
TWD297.80
Each (In a Tray of 260)
units
High Side High Side 165mΩ - 36 V 1.5mA - - - Thermal Shutdown Surface Mount QFN 48 +125 °C
RS Stock No. 145-4651
Mfr. Part No.FSQ0765RSUDTU
TWD60.70
Each (In a Tube of 50)
units
- Resonant Converter 1.6Ω - - 2.5A 1 - 80W - Surface Mount TO-220F 6 +85 °C
RS Stock No. 153-3163
Mfr. Part No.ADP198ACPZ-R7
TWD17.00
Each (On a Reel of 3000)
units
High Side High Side Switch 200mΩ 1 6.5 V 1A - - - - Surface Mount LFCSP 8 +85 °C
RS Stock No. 165-5575
Mfr. Part No.VND7NV04TR-E
TWD25.30
Each (On a Reel of 2500)
units
- OMNIFET: Fully Autoprotected Power MOSFET - - 40 V 6A - - - - Surface Mount DPAK 3 +150 °C