Trio of 2-A slew-rate-controlled load switches fit TDFN4, SC70-6, and TDFN8 packages
April 14, 2011 // Paul Buckley
Vishay Intertechnology, Inc., has released three new single and dual 2 A load switches designed for 1.1 V to 5.5 V operation. Offering low switch on-resistance at 1.2 V for increased efficiency, the SiP32411, SiP32413, and SiP32414 feature a controlled soft turn-on slew rate of 150 µs typical that limits the inrush current, providing a controlled smoother turn-on transition that minimizes switching noise.
The SiP32411 is a single switch available in both the 1.2 mm by 1.6 mm TDFN4 package and the SC70-6 package, while the SiP32413 and SiP32414 are dual switches available in the 2 mm x 2 mm TDFN8 package. The load switches released today guarantee low switch on-resistance of 66 mΩ at 1.2 V input (105 mΩ for the SiP32411 in the SC70-6 package), with each switch supporting over 2 A of continuous current.
The space-saving SiP32411, SiP32413, and SiP32414 feature a low-voltage control logic interface that eliminates the need for extra level shifting circuitry. The devices offer a low quiescent current of <1 µA when disabled and 6.7 µA at 1.2 V, allowing for longer on-times in battery-powered equipment. When disabled, the switches provide reverse blocking to prevent high current from flowing into the power source. The SiP32411 and SiP32414 integrate output discharge switches that enable rapid turn-off of a load circuit when the switch is disabled.
The two load switches in the SiP32413 feature reverse control logic. The device can easily be configured as a two-to-one power source, routing two power rails of different potentials to the common load point. The SiP32414 consists of two load switches of the same logic, and is ideal for loads with dual power rails.
The SiP32411, SiP32413, and SiP32414 will be used in USB, SIM, SDIO, POL, RF, and Wi-Fi module load applications in wireless modems and portable devices including, netbooks and notebook computers, cell phones, GPS products, digital cameras, and eBooks. The devices are compliant to RoHS Directive 2002/95/EC and halogen-free according to the IEC 61249-2-21 definition.
Samples of the new load switches are available now. Production quantities will be available in May 2011, with lead times of 10 weeks for larger orders.
Visit Vishay Intertechnology at www.vishay.com.
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Internet of Things (IoT) manufacturer Ciseco has launched the Raspberry Pi ‘Wireless Inventors Kit’ (RasWIK), featuring 88 pieces to provide everything a Pi owner needs to follow a series of step-by-step projects or to create their own wireless devices, without the need for configuration or even writing code.
RasWIK has been designed to be highly accessible, demystifying the dark art of wireless and enabling anyone with basic computing skills to begin building wireless devices with a Raspberry Pi. You can create anything from a simple traffic light, to a battery monitor, or even a temperature gauge that sends data to the Xively IoT cloud so billions can access the data.This month, Ciseco is giving away twelve Raspberry Pi Wireless Inventors kits, worth £49.99 each for EETimes Europe's readers to win.
And the winners are...
In our previous reader offer, Farsens was giving away five kits for EEtimes Europe readers to evaluate its FenixVortex, Kineo and X1 wireless, battery free sensor tags.
Lucky winners include Mr A. Neil from the UK, Mr. E. Delvaux from Belgium, Mr Lengal from the Czech Republic, Mr H. Bijlsma from the Netherlands, and Mr G. Pfaff from Germany. All should be receiving their packages soon. Lets wish them some interesting findings with their projects.
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