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庫存編號 671-0185
製造零件編號FSFR2100
TWD214.00
單位
- - 0.32Ω - - - 1 - - - Through Hole SIP 9 +130 °C
RS庫存編號 864-4995
製造零件編號FSFR2100
TWD193.30
毎管:19 個
單位
- Power Switch 4.75Ω - 25 V 8.3A 1 - 200W - Through Hole SIP 9 +130 °C
RS庫存編號 145-4321
製造零件編號KA5L0380RYDTU
TWD35.60
毎管:50 個
單位
- Off Lineer 4.6Ω - 30 V 2.41A 1 - 75W - Through Hole TO-220F 4 +85 °C
RS庫存編號 761-3372
製造零件編號FDC6330L
TWD16.20
/個 (每包:10個)
單位
- Integrated Load Switch 0.125Ω - 20 V 2.3A 2 - 0.7W - Surface Mount SOT-23 6 +150 °C
RS庫存編號 124-1345
製造零件編號FDC6330L
TWD6.70
個 (在毎卷:3000)
單位
- Integrated Load 0.125Ω - 20 V 2.3A 2 - 0.7W - Surface Mount SOT-23 6 +150 °C
RS庫存編號 145-5476
製造零件編號FSL126MRTWDTU
TWD53.20
毎管:50 個
單位
- PWM Controller 6.2Ω - - 1.2A 1 - 30W - Surface Mount TO-220F 6 +125 °C
RS庫存編號 862-9107
製造零件編號FSL126MRTWDTU
TWD62.40
/個 (每包:5個)
單位
- PWM Controller 6.2Ω - - 1.2A 1 - 30W - Surface Mount TO-220F 6 +125 °C
RS庫存編號 862-9088
製造零件編號FSFR2100XSL
TWD147.50
/個 (每包:2個)
單位
- Resonant Converter 0.51Ω - 400 V - 1 - 180W - Through Hole SIP 10 +130 °C
RS庫存編號 862-9145
製造零件編號FSQ0265RLX
TWD55.60
/個 (每包:5個)
單位
- PWM Controller 6mΩ - - 1.2A 1 - 14W - Surface Mount LSOP 8 +85 °C
RS庫存編號 163-2226
製造零件編號NCP330MUTBG
TWD9.20
個 (在毎卷:3000)
單位
- Load 50mΩ - 5.5 V 5A 1 - 0.225W - Surface Mount DFN 4 +125 °C
RS庫存編號 166-2143
製造零件編號FSUSB74UMX
TWD12.30
個 (在毎卷:5000)
單位
- USB - 4.4 V - 1 - - - Surface Mount UMLP 16 +85 °C
RS庫存編號 124-1411
製造零件編號FPF2700MPX
TWD42.10
個 (在毎卷:3000)
單位
- - - - 36 V 2A 1 1 - - Surface Mount MLP 8 +125 °C
RS庫存編號 802-1496
製造零件編號NCP330MUTBG
TWD21.20
Each (On a Tape of 25)
單位
- Load 50mΩ - 5.5 V 5A 1 - 0.225W - Surface Mount DFN 4 +125 °C
RS庫存編號 166-3641
製造零件編號FSQ0265RLX
TWD23.60
個 (在毎卷:1000)
單位
- PWM Controller 6mΩ - - 1.2A 1 - 14W - Surface Mount LSOP 8 +85 °C
RS庫存編號 145-4415
製造零件編號FSFR2100XSL
TWD132.60
毎管:19 個
單位
- Resonant Converter 0.51Ω - 400 V - 1 - 180W - Through Hole SIP 10 +130 °C
RS庫存編號 761-3616
製造零件編號FDC6331L
TWD19.40
/個 (每包:5個)
單位
- Integrated Load Switch 0.1Ω - 8 V 2.8A 2 - 0.7W - Surface Mount SOT-23 6 +150 °C
RS庫存編號 862-9195
製造零件編號FSUSB74MPX
TWD52.20
/個 (每包:5個)
單位
- USB - 4.4 V - 1 - - - Surface Mount MLP 16 +85 °C
RS庫存編號 808-8944
製造零件編號FPF2110
TWD31.80
/個 (每包:10個)
單位
- MOSFET Load 200mΩ - 5.5 V 800mA 1 - 667mW - Surface Mount SOT-23 5 +85 °C
RS庫存編號 862-9205
製造零件編號FSUSB74UMX
TWD31.60
/個 (每包:5個)
單位
- USB - 4.4 V - 1 - - - Surface Mount UMLP 16 +85 °C
RS庫存編號 166-3503
製造零件編號FSUSB74MPX
TWD21.00
個 (在毎卷:3000)
單位
- USB - 4.4 V - 1 - - - Surface Mount MLP 16 +85 °C