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 166-2293
製造零件編號FDC6323L
TWD8.00
個 (在毎卷:3000)
單位
- Integrated Load - - 8 V 1A 2 - 0.7W - Surface Mount SOT-23 6 +150 °C
RS庫存編號 184-8276
製造零件編號BM2LB150FJ-CE2
BrandROHM
TWD37.60
/個 (每包:5個)
單位
Low Side Low Side Switch 420mΩ 2 5.5 V 10A - - 2W - Surface Mount SOP 8 +150 °C
RS庫存編號 168-6834
製造零件編號VN340SP-E
TWD165.40
毎管:50 個
單位
High Side Solid State Relay 0.2Ω - 36 V 0.7A 4 - - - Surface Mount SOIC 10 +150 °C
RS庫存編號 165-8558
製造零件編號AP2191SG-13
TWD16.70
個 (在毎卷:2500)
單位
High Side - 115mΩ - 5.5 V 2.6A 2 - - - Surface Mount SOIC 8 +85 °C
RS庫存編號 204-2499
製造零件編號MAX20088ATPA/VY+
TWD96.40
/個 (每包:5個)
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- - - - 15 V 0.6A 2 1 - - - SWTQFN-EP 20 -
RS庫存編號 205-2422
製造零件編號NCV81599MWTXG
TWD37.20
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- Adjustable - - 28 V - 2 - - - Surface Mount QFNW-32 32 -
RS庫存編號 862-9160
製造零件編號FSQ0765RSUDTU
TWD71.20
/個 (每包:5個)
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- Resonant Converter 1.6Ω - - 2.5A 1 - 80W - Surface Mount TO-220F 6 +85 °C
RS庫存編號 865-0868
製造零件編號FAN3241TMX
TWD54.00
/個 (每包:5個)
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- - - - 60 V 5mA 2 - - - Surface Mount SOIC 8 +105 °C
RS庫存編號 204-2498
製造零件編號MAX20088ATPA/VY+
TWD82.60
毎管:60 個
單位
- - - - 15 V 0.6A 2 1 - - - SWTQFN-EP 20 -
RS庫存編號 166-2291
製造零件編號FDC6329L
TWD7.50
個 (在毎卷:3000)
單位
- Integrated Load - - 8 V 2.5A 2 - 0.7W - Surface Mount SOT-23 6 +150 °C