3-A output, 2-MHz buck-boost DC/DC converter offers extended run time from batteries or supercapacitors
December 15, 2010 // Paul Buckley
Linear Technology is releasing a synchronous buck-boost converter that delivers 3 A of output current from a nominal 3.3 V power source, Li-Ion/Polymer battery or up to 1 A from dual cell alkaline/NiCad/NiMH batteries. The LTC3113's 1.8 V to 5.5 V input range and 1.8 V to 5.5 V output range provides a regulated output from an input voltage above, below or equal to the output.
The LTC3113 is also an ideal regulator solution to maximize the energy available from a two supercapacitor stack. The proprietary buck-boost topology incorporated in the LTC3113 delivers a continuous transition through all operating modes, making it ideal for demanding applications that must maintain a constant, low noise output voltage even as the input voltage declines below the output. In many cases, this can add up to 25% more battery run time compared to a buck regulator.
The LTC3113's constant switching frequency is user programmable from 300 kHz up to 2 MHz in order to optimize the balance between efficiency and external component size. The combination of tiny externals and a 4 mm x 5 mm DFN or TSSOP-20E package provides unprecedented power density, typically required in many high performance applications.
The LTC3113 includes two N-channel MOSFETs and two P-channel MOSFETs (RDS(ON) of 29 mOhm and 40 mOhm, respectively) to deliver efficiencies of up to 96%. User-selectable Burst Mode operation lowers quiescent current to only 40 µA, improving light load efficiency and further extending battery run time. For noise sensitive applications, the Burst Mode operation can be disabled, offering the lowest noise operation. Other features include soft-start, current limiting, thermal shutdown and output disconnect.
Availability and Pricing
LTC3113EDHD is available in a 16-lead 4mm x 5mm DFN package and the LTC3113EFE is in a thermally enhanced 20-lead TSSOP package. Pricing starts at $3.95 each and $4.15 each, respectively for 1,000 piece quantities.
Industrial grade versions, the LTC3113IDHD and LTC3113IFE, are guaranteed to operate over the -40 to 125 degrees C operating junction temperature range and are priced at $4.35 each and $4.57 each, respectively in 1,000-piece quantities. All versions are available from stock.
More information about the LTC3113 synchronous buck-boost converter at www.linear.com/3113
Visit Linear Technology at www.linear.com
RS Components and Allied Electronics connect with Rosenberger for global distribution
October 24, 2014
RS Components (RS) and Allied Electronics, the trading brands of Electrocomponents plc, have signed a global distribution ...
Pixel chip sparks energy-efficient intelligent LED headlamps
Noise cancellation: The sounds of silence in the car
HPLEDs double light output, cut costs by 40 percent
Startup creates virtual cores
Photochemical compounds for tunable OLED devices
October 24, 2014
Spanish researchers have developed new organic compounds characterized by a higher modularity, stability and efficiency, ...
Consumer chips in the car? Experts demand adequate design processes
Murata cheerleaders demonstrate sensors, swarm intelligence
Radon and VOCs detection goes personal
- 5 Best Practices for Designing Flexible Test Stations
- Intelligent PLCs Expand the Internet of Things
- Solutions for Millimeter Wave Wireless Backhaul
- Enter Linduino
InterviewCEO interview: AMS' Laney on driving a sensor-driven business
Kirk Laney, CEO of Austrian mixed-signal chip and sensor company AMS, wants to leverage the opportunity that technology affords to create new markets for sensors and sensor interfaces.
Filter WizardCheck out the Filter Wizard Series of articles by Filter Guru Kendall Castor-Perry which provide invaluable practical Analog Design guidelines.
Linear video channel
READER OFFERRead more
This month, Oscium is giving away three of its iMSO-204L dual analogue iOS oscilloscopes, worth USD400 each. Designed with native Lightning compatibility, the iMSO-204L transforms the iPad, iPhone, and iPod touch into an ultra-portable, two-channel oscilloscope.
Since Apple changed its connector, Oscium has been working to bring native compatibility to its customers. The third generation...MORE INFO AND LAST MONTH' WINNERS...
December 15, 2011 | Texas instruments | 222901974
Unique Ser/Des technology supports encrypted video and audio content with full duplex bi-directional control channel over a single wire interface.