HomeIndustry news 500mA / 1.5MHz 65V Boost DC-DC Converter

500mA / 1.5MHz 65V Boost DC-DC Converter

March 11, 2015 By admin Comments are Off , , ,

Linear Technology Corporationannounces the LT8570 and LT8570-1 current-mode, fixed-frequency step-up dc-dc converters. The LT8570 uses an internal 500mA, 65V switch, while the LT8570-1 uses a 250mA, 65V switch. Both devices operate from an input voltage range of 2.55V to 40V, making them suitable for applications with input sources ranging from a single-cell Li-Ion to automotive inputs. Both the LT8570 and LT8570-1 can be configured as a boost, SEPIC or inverting converter. The LT8570-1’s smaller switch enables the use of a smaller inductor in lower current applications.

Recommended: High-Current FETs Available in TO-Leadless Packaging for Automotive

Both parts offer a programmable switching frequency between 200kHz and 1.5MHz, enabling designers to minimize external component sizes. The combination of a 3mm x 3mm DFN package (or MSOP-8E) and tiny externals ensures a very compact footprint while minimizing solution cost.

The LT8570 and LT8570-1 use internal high efficiency switches, which deliver efficiencies up to 86%. Undervoltage lockout (UVLO) is user adjustable for optimal system performance. A single feedback resistor sets the output voltage, minimizing external components. Other features include external synchronization capability, internal soft-start, thermal shutdown protection and the ability to work in inverting and SEPIC applications.

Related: HV / HF Dual Analog Switch for Industrial Applications

The LT8570/-1 is available in both a 3mm x 3mm DFN-8 and a thermally enhanced MSOP-8 package. Two temperature grades are available, with operation from -40 to 125 degrees C (junction) for the extended and industrial grades. Pricing starts at $2.25 each for 1,000 piece quantities. Both versions are available from stock.

source: http://www.powerpulse.net/story.php?storyID=31742

Comments are closed.