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
Apple joins Pentagon alliance to develop wearable tech
August 28, 2015
The Pentagon (Washington, DC) has announced a Silicon Valley-based manufacturing institute and partnership with a consortium ...
Single material layer process lowers LED manufacturing costs
Aquion Energy forges technology partnership with Eguana Technologies
The route to cleaner e-cars - coupling perovskite solar cells
Real-time data hub for smart electromobility
Apple iCar: Do iCare?
August 27, 2015
Whether its creators call it ‘iRod,' 'iMove" or ‘iCar,’ Apple has launched a pedal-to-the-metal drive into the automotive ...
Qorvo takes strategic stake in MEMS vendor Cavendish
Here strives to establish uniform auto sensor data format
Panasonic to close Beijing battery factory, sheds 1,300 jobs
- Software-Defined Radio Handbook
- Why Making the Move from a Variable Transformer to a VariPLUS is the Right Decision
- Automating Leakage and Functional Testing
- Automotive Circuit Protection using Littelfuse Automotive TVS Diodes
InterviewCEO interview: Ambiq sees broader options for low voltage
Mike Noonen, recently appointed interim CEO at microcontroller startup Ambiq Micro, discusses the focus and opportunities for this pioneering company designing circuits that can operate below the threshold ...
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, Novelda is giving away two full XeThru Inspiration kits worth 1499 US Dollars each, for EETimes Europe's readers to experiment first hand with its XeThru technology.Based on the use of radio waves, rather than infrared, ultrasound or light, the company's X2M1000 Inspiration modules can detect presence just from the chest movement while breathing, and measure both the rate and... 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.