Global Sources
EE Times-Asia
Stay in touch with EE Times Asia
EE Times-Asia > Controls/MCUs

Linear Tech rolls out latest synchronous step-down controller

Posted: 26 Sep 2005 ?? ?Print Version ?Bookmark and Share

Keywords:linear technology? ltc3809-1? controller?

Linear Technology Corp. rolled out a No RSENSE synchronous step-down controller in a 3-by-3mm DFN-10 (or MSOPE-10). The new LTC3809-1's 550KHz frequency and current mode architecture with MOSFET VDS sensing eliminates the need for a current sense resistor while delivering efficiencies as high as 95 percent. This product's input voltage range of 2.75V to 9.8V makes it a suitable solution for single or dual Li-ion or multi-cell NiMH/NiCd/Alkaline applications, as well as standard 3.3V and 5V rails to operate in Burst Mode with only 100?A of quiescent current, or in a pulse skipping or forced continuous mode for low out put voltage ripple.

The LTC3809-1 off a user-adjustable tracking/soft-start input that smoothly ramps the out put voltage during startup. Other features include default internal soft-start circuitry, an auxiliary winding regulation and output over-voltage protection.

The LTC3809EDD-1 and LTC3809EMSE-1 are both available from stock in a 3-by-3mm DFN-10 and MSOPE-10 packages, respectively. Pricing starts at $2.50 each in 1,000-piece quantities.

Article Comments - Linear Tech rolls out latest synchro...
*? You can enter [0] more charecters.
*Verify code:


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

Back to Top