Free Newsletter
Register for our Free Newsletters
Newsletter
Zones
Airport, Border and Port Safety and Security
Left Nav Sep
Bioterrorism
Left Nav Sep
Civil Aircraft
Left Nav Sep
Civil Airlines, Airports and Services
Left Nav Sep
Communications and Navigation
Left Nav Sep
Education, Training and Professional Services
Left Nav Sep
Manufacturing and Materials
Left Nav Sep
Military and Defence Facilities
Left Nav Sep
Military Aviation
Left Nav Sep
Military Vehicles
Left Nav Sep
Naval Systems
Left Nav Sep
Personal Equipment
Left Nav Sep
Software and IT Services
Left Nav Sep
Space and Satellite
Left Nav Sep
Weapons, Ammunition and Explosives
Left Nav Sep
View All
Other Carouselweb publications
Carousel Web
Defense File Logo
New Material Logo
Pro Health Service Zone
Pro Manufacturing Zone
Prosecurity Zone
Web Lec Logo
Pro Engineering Zone
 
 
 
News

LT3741 Step-Down DC/DC Controller from Linear Technology


Strict Standards: Only variables should be passed by reference in /home/defensef/public_html/components/com_zone/handleHTML.php on line 623
Linear Technology
: 23 March, 2010  (New Product)
Synchronous Step Down Controller Features Additional Pin for Thermal Control of Load Current
LT3741 Step-Down DC/DC Controller from Linear Technology
Linear Technology announces the LT3741, a synchronous step-down DC/DC converter designed to accurately (6%) regulate output currents up to 20A. Its 6V to 36V input voltage range, constant current and constant voltage operation makes it ideal for a wide variety of applications, ranging from battery and supercap chargers and laser drivers to high current LED lighting. The LT3741 uses two external switching MOSFETs and delivers up to 20A of continuous output current over a wide voltage range of 0V to 34V. Efficiencies as high as 95% eliminate the need for external heat sinking. The LT3741's frequency can be programmed and synchronized between 200kHz and 1MHz, allowing designers to optimize efficiency while minimizing external component size. Combined with a 4mm x 4mm QFN-20 or thermally enhanced TSSOP-20 package, the LT3741 provides a highly compact constant voltage and current solution.

The LT3741 uses an average current mode control scheme to maintain inductor current regulation over a wide output voltage range of 0V to VIN-2V. The regulated current is set by an analog voltage on the CTRL pins and an external sense resistor. The LT3741's unique topology enables it to both source and sink current. The LT3741's regulated output voltage and overvoltage protection are set with an external voltage divider. Additional features include an accurate external voltage reference, a programmable undervoltage lockout (ULVO) pin and thermal shutdown.

The LT3741EUF is available in a 20-pin 4mm x 4mm QFN package and the LT3741EFE is available in a thermally enhanced TSSOP-20, priced starting at $3.95 and $4.10 each, respectively in 1,000-piece quantities. Extended temperature versions, or I Grades, the LT3741IUF and LT3741IFE, are also available. Pricing starts at $4.65 and $4.82 each, respectively in 1,000-piece quantities. All versions are available from stock.
Bookmark and Share
 
Home I Editor's Blog I News by Zone I News by Date I News by Category I Special Reports I Directory I Events I Advertise I Submit Your News I About Us I Guides
 
   © 2012 DefenseFile.com
Netgains Logo