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 146-5632
製造零件編號TNY274PN
TWD30.50
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 920-6323
製造零件編號TDE1798DP
TWD263.90
毎管:50 個
單位
- High Speed - - 50 V 8mA 1 - - - Through Hole PDIP 8 +85 °C
RS庫存編號 880-5406
製造零件編號STMPS2141STR
TWD15.70
/個 (每包:10個)
單位
High Side MOSFET 160mΩ - 5.5 V 0.5A 1 - - - Surface Mount SOT-23 5 +125 °C
RS庫存編號 168-8922
製造零件編號STMPS2141STR
TWD6.50
個 (在毎卷:3000)
單位
High Side MOSFET 160mΩ - 5.5 V 0.5A 1 - - - Surface Mount SOT-23 5 +125 °C
RS庫存編號 423-163
製造零件編號TPS2042BD
TWD46.20
/個 (每包:5個)
單位
High Side USB Power 49mΩ - 5.5 V 1.25A 4 - - - Surface Mount SOIC 8 +85 °C
RS庫存編號 189-1201
製造零件編號TDE1798DP
TWD416.00
單位
- High Speed Switch - - 50 V 8mA 1 - - - Through Hole PDIP 8 +85 °C
RS庫存編號 923-2461
製造零件編號TPS2042BD
TWD39.30
毎管:75 個
單位
High Side USB Power 49mΩ - 5.5 V 1.25A 4 - - - Surface Mount SOIC 8 +85 °C
RS庫存編號 823-5718
製造零件編號BTS3800SLHTSA1
BrandInfineon
TWD20.60
/個 (每包:10個)
單位
- - - - - - - - - - Surface Mount SCT595 5 +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
RS庫存編號 165-6505
製造零件編號BTS3800SLHTSA1
BrandInfineon
TWD9.80
個 (在毎卷:3000)
單位
- - - - - - - - - - - - - -
RS庫存編號 168-5067
製造零件編號TPS259261DRCT
TWD27.60
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 133-0740
製造零件編號TPS259261DRCT
TWD48.80
/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 620-6333
製造零件編號TPS2211AIDB
TWD78.40
/個 (每包:5個)
單位
- - - - - - - - - - Surface Mount SSOP 16 +85 °C
RS庫存編號 862-9145
製造零件編號FSQ0265RLX
TWD51.20
/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 753-2822
製造零件編號BSP762TXUMA1
BrandInfineon
TWD60.50
/個 (每包:2個)
單位
High Side High Side Switch 200mΩ - 16 V 2.4A 1 - - - Surface Mount SOIC 8 +150 °C
RS庫存編號 862-9148
製造零件編號FSL336LRN
TWD45.20
/個 (每包:5個)
單位
- Integrate Pulse Width Modulator - - - 1.8A 1 - 7.08W - Through Hole PDIP 7 -
RS庫存編號 146-5681
製造零件編號LNK562DN
TWD20.60
毎管:100 個
單位
- Off Lineer 88Ω - - 375mA 1 - 1.9W Over-Temperature Surface Mount SOC 8 +150 °C
RS庫存編號 753-3119
製造零件編號ITS4880RCUMA1
BrandInfineon
TWD239.00
單位
High Side High Side Switch 320mΩ - 45 V 0.625A 8 - - - Surface Mount SOIC 36 +85 °C
RS庫存編號 165-8041
製造零件編號BSP76E6433HUMA1
BrandInfineon
TWD18.80
個 (在毎卷:4000)
單位
Low Side Low Side Switch 480mΩ - 10 V 1.4A 1 - - - Surface Mount SOT-223 3 + Tab +150 °C
RS庫存編號 146-5636
製造零件編號TNY275PN
TWD31.90
毎管:50 個
單位
- Off Lineer 33Ω - - 560mA 1 - 11.5W Over-Temperature Through Hole DIPC 8 +150 °C