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Step-down DC/DC converter delivers 200mA

Posted: 04 May 2007 ?? ?Print Version ?Bookmark and Share

Keywords:step-down DC/DC converter? catch diodes? junction temperature?

Linear Technology has introduced the H-grade version of LT3470, the 40V micropower step-down DC/DC converter with integrated boost and catch diodes.

The converter operates from input voltages of 4- to 40V, delivering up to 200mA of output current. The LT3470 is optimized for 2-cell Li-ion, wall adapter or automotive power sources. Burst Mode operation reduces quiescent current to only 26?A, making it suitable for applications such as always-on automotive systems. The entire solution footprint is only 50mm?, designed for space constrained applications.

The H-grade version operates up to a junction temperature of 150C, compared to the E- and I-grade maximum junction temperature of 125C. All electrical specifications are identical for the E-, I- and H-grade versions. The H- grade parts are both tested and guaranteed to the maximum junction temperature of 150C. They are suited for automotive and industrial applications, which are subjected to high ambient temperatures.

The LT3470HDDB is available from stock in a 2-by-3mm DFN-8 package. Pricing starts at $3.07 each for 1,000-piece quantities.




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