New Industry Products

Linear Adds New 40V, 200mA Micropower Step-Down DC-DC Converter

April 23, 2007 by Jeff Shepard

Linear Technology announced the H-grade version of the LT3470. The LT3470 is a 40V micropower step-down dc-dc converter with integrated boost and catch diodes in a 2mm x 3mm DFN package. It 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 26µA, making it suitable for applications such as always-on automotive systems. The entire solution footprint is only 50mm², making it well-suited for space constrained applications.

The H-grade version operates up to a junction temperature of 150°C, compared to the E- and I-grade maximum junction temperature of 125°C. 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 150°C. They are well suited for automotive and industrial applications, which are subjected to high ambient temperatures.

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