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 747-0992
製造零件編號NCP380HSNAJAAT1G
HK$7.55
/個 (每包:5個)
單位
- - - - 5.5 V 2.1A 2 2 - - Surface Mount TSOP 5 +125 °C
RS庫存編號 146-5679
製造零件編號TNY279PN
HK$12.936
毎管:50 個
單位
- Off Lineer 6.7Ω - - 2250mA 1 - 25W Over-Temperature Through Hole DIPC 8 +150 °C
RS庫存編號 146-5693
製造零件編號TNY280PN
HK$14.91
毎管:50 個
單位
- Off Lineer 4.5Ω - - 2550mA 1 - 28.5W Over-Temperature Through Hole DIPC 8 +150 °C
RS庫存編號 123-5392
製造零件編號LNK605DG
HK$8.716
/個 (每包:5個)
單位
- - - - - - - - - - Surface Mount SOIC 7 +150 °C
RS庫存編號 825-6765
製造零件編號TPS2561DRCT
HK$14.47
/個 (每包:5個)
單位
- Distribution 70mΩ - 6.5 V 2.5A 2 - 2.403W - Surface Mount SON 10 +85 °C
RS庫存編號 162-8784
製造零件編號TPS2561DRCT
HK$9.322
個 (在毎卷:250)
單位
- Distribution 70mΩ - 6.5 V 2.5A 2 - 2.403W - Surface Mount SON 10 +85 °C
RS庫存編號 146-5643
製造零件編號TNY276PN
HK$8.988
毎管:50 個
單位
- Off Lineer 24Ω - - 1350mA 1 - 15W Over-Temperature Through Hole DIPC 8 +150 °C
RS庫存編號 146-5632
製造零件編號TNY274PN
HK$8.085
毎管:50 個
單位
- Off Lineer 48Ω - - 750mA 1 - 8.5W Over-Temperature Through Hole DIPC 8 +150 °C
RS庫存編號 146-5630
製造零件編號LNK364PN
HK$7.371
毎管:50 個
單位
- Off Lineer 45Ω - - 750mA 1 - 6W Short Circuit Through Hole DIPB 8 +150 °C
RS庫存編號 146-5616
製造零件編號LNK562PN
HK$5.933
毎管:50 個
單位
- Off Lineer 88Ω - - 375mA 1 - 1.9W Over-Temperature Through Hole DIPB 8 +150 °C
RS庫存編號 807-6058
製造零件編號FSL116HR
HK$7.263
/個 (每包:10個)
單位
- Integrated PWM Controller 10Ω - 265 V 1A 1 - 14W - Through Hole PDIP 8 +105 °C
RS庫存編號 821-5294
製造零件編號NCP45520IMNTWG-H
HK$8.042
/個 (每包:20個)
單位
- Controlled Load 22.5mΩ - 5.5 V - 1 - 2.5W - Surface Mount DFN 8 +85 °C
RS庫存編號 921-5150
製造零件編號TPS22945DCKR
HK$4.574
個 (在毎卷:3000)
單位
- - - - 5.5 V 0.15A 1 - - - Surface Mount SC-70 5 +85 °C
RS庫存編號 146-5687
製造零件編號TOP255PN
HK$13.661
毎管:50 個
單位
- Off Lineer 4.7Ω - - 2.72A 1 - 35W Over-Temperature Through Hole DIPC 8 +150 °C
RS庫存編號 124-5360
製造零件編號NCP45520IMNTWG-H
HK$4.557
個 (在毎卷:3000)
單位
- Controlled Load 22.5mΩ - 5.5 V - 1 - 2.5W - Surface Mount DFN 8 +85 °C
RS庫存編號 146-5722
製造零件編號LNK306DN
HK$8.239
毎管:100 個
單位
Low Side Off Lineer 12.9Ω - - 360mA 1 - - Short Circuit Surface Mount SOC 8 +150 °C
RS庫存編號 146-5641
製造零件編號TNY275GN
HK$11.235
毎管:50 個
單位
- Off Lineer 33Ω - - 560mA 1 - 11.5W Over-Temperature Surface Mount SMDC 8 +150 °C
RS庫存編號 709-9167
製造零件編號TPS22945DCKR
HK$9.736
/個 (每包:5個)
單位
- - - - 5.5 V 0.15A 1 - - - Surface Mount SC-70 5 +85 °C
RS庫存編號 145-4618
製造零件編號FSL116HR
HK$8.442
毎管:50 個
單位
- Integrated PWM Controller 10Ω - 265 V 1A 1 - 14W - Through Hole PDIP 8 +105 °C
RS庫存編號 825-9143
製造零件編號BTS724GXUMA1
BrandInfineon
HK$41.164
/個 (每包:5個)
單位
High Side High Side Switch 180mΩ - 40 V 3.3A 4 - - - Surface Mount DSO 20 +150 °C