ELECTRONICS:Linear Technology Corp.’s LT3686, a 1.2A, 37VIN step-down switching regulator operates within a VIN range of 3.6 to 37V with overvoltage lockout, protecting the regulator and load from transients as high as 55V, making it ideal for load dump and cold-crank conditions commonly found in automotive applications as well as 24V industrial supplies. Its internal 1.85A switch can deliver up to 1.2A of continuous output current at voltages as low as 0.8V. Its low minimum on-time enables it to offer high switching frequencies even with high step-down ratios. For example, with an input as high as 16V, it can deliver a 3.3V output using a 2 MHz switching frequency. The LT3686’s switching frequency is user programmable from 300 kHz to 2.5 MHz, enabling designers to maximize efficiency while avoiding critical noise-sensitive frequency bands. The LT3686 also uses a unique design, which ensures that it maintains constant frequency switching, even in very light load conditions. The device’s 3 x 3mm DFN-10 package and high switching frequency, which keeps the external inductor and capacitors small, provides a compact, thermally efficient footprint.The LT3686 utilizes a high efficiency 1.85A, 680 mV switch with the necessary boost diode, oscillator, control and logic circuitry integrated into a single chip. Its catch diode current sense (DA pin) protects the circuit during input voltage transients even at high switching frequencies. Special design techniques used in the LT3686 enable high efficiency over a wide input voltage range, and the device’s current mode topology enables fast transient response and excellent loop stability. Other features include tracking capability, internal compensation and soft-start capability.
Pricing for the LT3686EDD starts at $2.50 each for 1,000-piece quantities. An industrial grade version, LT3686IDD, is guaranteed to operate from a -40 to 125C operating junction temperature and is priced at $2.78 each. Both versions are available from stock.
Truchard will be presented the award at the 2014 Golden Mousetrap Awards ceremony during the co-located events Pacific Design & Manufacturing, MD&M West, WestPack, PLASTEC West, Electronics West, ATX West, and AeroCon.
Robots that walk have come a long way from simple barebones walking machines or pairs of legs without an upper body and head. Much of the research these days focuses on making more humanoid robots. But they are not all created equal.
The IEEE Computer Society has named the top 10 trends for 2014. You can expect the convergence of cloud computing and mobile devices, advances in health care data and devices, as well as privacy issues in social media to make the headlines. And 3D printing came out of nowhere to make a big splash.
For industrial control applications, or even a simple assembly line, that machine can go almost 24/7 without a break. But what happens when the task is a little more complex? That’s where the “smart” machine would come in. The smart machine is one that has some simple (or complex in some cases) processing capability to be able to adapt to changing conditions. Such machines are suited for a host of applications, including automotive, aerospace, defense, medical, computers and electronics, telecommunications, consumer goods, and so on. This discussion will examine what’s possible with smart machines, and what tradeoffs need to be made to implement such a solution.