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 123-5393
製造零件編號LNK606PG
TWD36.00
/個 (每包:5個)
單位
- - - - - - - - - - Through Hole DIP 7 +150 °C
RS庫存編號 166-2143
製造零件編號FSUSB74UMX
TWD11.90
個 (在毎卷:5000)
單位
- USB - 4.4 V - 1 - - - Surface Mount UMLP 16 +85 °C
RS庫存編號 165-4277
製造零件編號MIC2026-2YM-TR
BrandMicrochip
TWD27.10
個 (在毎卷:2500)
單位
High Side - 170mΩ - 5.5 V - 2 - - - Surface Mount SOIC 8 +85 °C
RS庫存編號 752-8227
製造零件編號BSP752TXUMA1
BrandInfineon
TWD60.00
/個 (每包:2個)
單位
High Side High Side Switch 380mΩ - 16 V 1.7A 1 - - - Surface Mount SOIC 8 +150 °C
RS庫存編號 920-6547
製造零件編號VNS3NV04DPTR-E
TWD38.80
個 (在毎卷:2500)
單位
- OMNIFET: Fully Autoprotected Power MOSFET - - 40 V 3.5A - - - - Surface Mount SOIC 8 -
RS庫存編號 714-1177
製造零件編號VN808CM-E
TWD218.00
單位
- - - - 45 V 700mA 8 8 - - Surface Mount PowerSO 36 +125 °C
RS庫存編號 753-2860
製造零件編號BTS3134NHUMA1
BrandInfineon
TWD45.60
/個 (每包:5個)
單位
Low Side Low Side Switch 100mΩ - 10 V 3A 2 - - - Surface Mount SOT-223 3 + Tab +150 °C
RS庫存編號 146-5631
製造零件編號LNK364GN
TWD29.20
毎管:50 個
單位
- Off Lineer 45Ω - - 750mA 1 - 6W Short Circuit Surface Mount SMDB 8 +150 °C
RS庫存編號 919-6608
製造零件編號BSP772TXUMA1
BrandInfineon
TWD31.80
個 (在毎卷:2500)
單位
High Side High Side Switch 120mΩ - 16 V 3.1A 1 - - - Surface Mount SOIC 8 +150 °C
RS庫存編號 145-4649
製造零件編號FSL336LRN
TWD38.30
毎管:50 個
單位
- Integrate Pulse Width Modulator - - - 1.8A 1 - 7.08W - Through Hole PDIP 7 -
RS庫存編號 897-7264
製造零件編號BTS3405GXUMA1
BrandInfineon
TWD41.30
/個 (每包:10個)
單位
Low Side Smart Low-Side 1.9Ω - 10 V 350mA 1 - - - Surface Mount SOIC 8 +150 °C
RS庫存編號 162-7905
製造零件編號TPS22929DDBVT
TWD16.90
個 (在毎卷:250)
單位
- Load Management 200mΩ - 5.5 V 1.8A 1 - 463mW - Surface Mount SOT-23 6 +85 °C
RS庫存編號 802-1496
製造零件編號NCP330MUTBG
TWD20.00
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 146-5672
製造零件編號TNY278GN
TWD56.00
毎管:50 個
單位
- Off Lineer - - 1650mA 1 - 21.5W Over-Temperature Surface Mount SMDC 8 +150 °C
RS庫存編號 910-1691
製造零件編號MIC2026-2YM-TR
BrandMicrochip
TWD35.60
/個 (每包:10個)
單位
High Side - 170mΩ - 5.5 V - 2 - - - Surface Mount SOIC 8 +85 °C
RS庫存編號 462-6117
製造零件編號TPS2010AD
TWD82.80
/個 (每包:5個)
單位
- - - - 5.5 V 0.3A 1 1 - - Surface Mount SOIC 8 +85 °C
RS庫存編號 145-9132
製造零件編號MIC2026-2YM
BrandMicrochip
TWD27.90
毎管:95 個
單位
High Side USB Power 90mΩ - 5.5 V 0.9A 4 - - - Surface Mount SOIC 8 +85 °C
RS庫存編號 166-0826
製造零件編號BTS50451EJAXUMA1
BrandInfineon
TWD20.90
個 (在毎卷:2500)
單位
High Side High Side Power Switch 90mΩ - 28 V 4A 1 - - - Surface Mount DSO-8-43 8 +150 °C
RS庫存編號 166-3757
製造零件編號FPF2110
TWD14.20
個 (在毎卷:3000)
單位
- MOSFET Load 200mΩ - 5.5 V 800mA 1 - 667mW - Surface Mount SOT-23 5 +85 °C
RS庫存編號 166-3641
製造零件編號FSQ0265RLX
TWD22.30
個 (在毎卷:1000)
單位
- PWM Controller 6mΩ - - 1.2A 1 - 14W - Surface Mount LSOP 8 +85 °C