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 665-8832
製造零件編號TPS2046BD
TWD78.00
/個 (每包:5個)
單位
- - - - 5.5 V 0.7A 2 1 - - Surface Mount SOIC 8 +85 °C
RS庫存編號 162-7558
製造零件編號TPS2046BD
TWD61.50
毎管:75 個
單位
- - - - 5.5 V 0.7A 2 1 - - Surface Mount SOIC 8 +85 °C
RS庫存編號 146-5630
製造零件編號LNK364PN
TWD27.80
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 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 146-5658
製造零件編號TNY277PN
TWD37.30
毎管:50 個
單位
- Off Lineer 13.5Ω - - 1650mA 1 - 18W Over-Temperature Through Hole DIPC 8 +150 °C
RS庫存編號 880-5538
製造零件編號VN750PSTR-E
TWD47.50
/個 (每包:10個)
單位
High Side Driver 120mΩ - 36 V 9A 1 - - - Surface Mount SOIC 8 +150 °C
RS庫存編號 146-5643
製造零件編號TNY276PN
TWD33.90
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 168-5065
製造零件編號TPS259251DRCT
TWD29.80
個 (在毎卷:250)
單位
- - - - 13.8 V 5.7A 3 3 - - Surface Mount VSON 10 +85 °C
RS庫存編號 146-5664
製造零件編號TNY277GN
TWD49.20
毎管:50 個
單位
- Off Lineer 13.5Ω - - 1650mA 1 - 18W Over-Temperature Surface Mount SMDC 8 +150 °C
RS庫存編號 146-5693
製造零件編號TNY280PN
TWD56.30
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 133-0738
製造零件編號TPS259251DRCT
TWD51.20
/個 (每包:5個)
單位
- - - - 13.8 V 5.7A 3 3 - - Surface Mount VSON 10 +85 °C
RS庫存編號 178-5195
製造零件編號VN750PSTR-E
TWD24.80
個 (在毎卷:2500)
單位
High Side Driver 120mΩ - 36 V 9A 1 - - - Surface Mount SOIC 8 +150 °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 146-5701
製造零件編號TOP256GN
TWD61.00
毎管:50 個
單位
- Off Lineer 4.75Ω - - 4.08A 1 - 40W Over-Temperature Surface Mount SMDC 8 +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 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 911-1017
製造零件編號BSP452HUMA1
BrandInfineon
TWD28.90
個 (在毎卷:4000)
單位
- - - - - - - - - - Surface Mount SOT-223 3 + Tab +150 °C
RS庫存編號 823-5576
製造零件編號BSP452HUMA1
BrandInfineon
TWD63.60
/個 (每包:5個)
單位
- - - - - - - - - - Surface Mount SOT-223 3 + Tab +150 °C
RS庫存編號 145-5476
製造零件編號FSL126MRTWDTU
TWD48.90
毎管:50 個
單位
- PWM Controller 6.2Ω - - 1.2A 1 - 30W - Surface Mount TO-220F 6 +125 °C