Global Sources
EE Times-India
Stay in touch with EE Times India
 
EE Times-India > Power/Alternative Energy
 
 
Power/Alternative Energy  

Buck converters deliver 300mA constant current

Posted: 08 Dec 2011     Print Version  Bookmark and Share

Keywords:buck converter  LDO  battery-powered application 

Linear Technology Corp. launches the LTC3103 and LTC3104, two 15V fixed frequency synchronous buck converters that provide 300mA of continuous current to output voltages from 0.6-13.8V targeted at battery-powered applications such as industrial control power, remote sensor networks, low power wireless systems and energy harvesting applications.

The LTC3103 uses 1.8µA of quiescent current, while the LTC3104, which offers a 10mA programmable LDO output, requires 2.6µA of quiescent current.

LTC3104

The LTC3103 and LTC3104 provide 300mA of continuous current to output voltages from 0.6-13.8V.

The LTC3103 and LTC3104 use synchronous rectification to deliver efficiencies as high as 95 per cent, according to Linear. In addition, both devices operate from 2.5-15V input voltage. For applications that demand low noise, the devices can work in a 'forced continuous mode' where the part will operate at the 1.2MHz switching frequency. The device can also be commanded to automatically transition from fixed frequency to Burst Mode operation to achieve high efficiency over an extremely wide range of load currents, according to the company.

Internal compensation, small-footprint DFN and MSOP packages and fixed 1.2MHz switching frequency enable the use of just a few tiny external components to offer very compact solution footprints. An accurate, programmable RUN comparator offers the user flexibility in programming at what input voltage the part will be enabled. Other features include Power Good, integrated soft-start and over-temperature protection.

Pricing for LTC3103EDD and LTC3103EMSE starts at Rs.109.87 ($2.45) each, for 1,000-piece quantities. Industrial grade versions, the LTC3103IDD and LTC3103IMSE, are tested and guaranteed to operate from a -40°C to 125°C operating junction temperature, and are priced at Rs.121.08 ($2.70) each, in 1,000-piece quantities.

Pricing for the LTC3104EDE and LTC3104EMSE starts at Rs.121.08 ($2.70 ) each, for 1,000-piece quantities. Industrial grade versions, the LTC3104IDE and LTC3104IMSE, are tested and guaranteed to operate from a -40°C to 125°C operating junction temperature, priced at Rs.132.74 ($2.96) each, in 1,000-piece quantities.





Comment on "Buck converters deliver 300mA consta..."
Comments:  
*  You can enter [0] more charecters.
*Verify code:
 
 
Webinars

Seminars

Visit Asia Webinars to learn about the latest in technology and get practical design tips.

 

Go to top             Connect on Facebook      Follow us on Twitter      Follow us on Orkut

 
Back to Top