2.5MHz Boost/Inverter DC/DC Converter with 2A/42V Switch & Synchronization

News Release ⎜ www.linear.com
2.5MHz Boost/Inverter DC/DC Converter with 2A/42V Switch &
MILPITAS, CA – October 4, 2007 – Linear Technology Corporation announces the LT3580, a
current mode, fixed frequency step-up DC/DC converter with an internal 2A, 42V switch. It
operates from an input voltage range of 2.5V to 32V, making it suitable for applications with
input sources ranging from a single-cell Li-Ion to automotive inputs. The LT3580 can be
configured as either a boost, SEPIC or an inverting converter. Its switching frequency can be
programmed, via a single resistor or synchronized to an external clock, between 200kHz and
2.5MHz, enabling designers to minimize external component sizes and to avoid “noise critical”
frequency bands. 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 LT3580’s low VCESAT switch, 0.3V at 1.5A, delivers efficiencies of up to 89%.
Under-voltage 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 and thermal shutdown protection.
The LT3580EDD is available in a 3mm x 3mm DFN-8 package. Pricing starts at $2.00
each for 1,000 piece quantities. The LT3580MS8E is also available in a thermally enhanced
MSOP-8 package. Pricing starts at $2.10 each for 1,000 piece quantities. Industrial temperature
(-40°C to 125°C) versions, the LT3580IDD and the LT3580IMS8E, are also available from
stock. Pricing starts at $2.40 and $2.52 each, respectively, for 1,000 piece quantities.
2.5MHz Boost/Inverter DC/DC Converter with 2A/42V Switch &
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Photo Caption: 2A, 42V Boost, Inverting or SEPIC DC/DC Converter
Summary of Features: LT3580
2A Internal Power Switch
Adjustable Switching Frequency
Single Feedback Resistor Sets VOUT
Synchronizable to External Clock from 200kHz to 2.5MHz
High Gain SHDN Pin Accepts Slowly Varying Input Signals
Wide Input Voltage Range: 2.5V to 32V
Low VCESAT Switch: 300mV at 1.5A (Typical)
Integrated Soft-Start Function
Easily Configurable as a Boost or Inverting Converter
User Configurable Undervoltage Lockout (UVLO)
Tiny 8-Lead 3mm × 3mm DFN and 8-Lead MSOP Packages
About Linear Technology
Linear Technology Corporation, a manufacturer of high performance linear integrated circuits,
was founded in 1981, became a public company in 1986 and joined the S&P 500 index of major
public companies in 2000. Linear Technology products include high performance amplifiers,
comparators, voltage references, monolithic filters, linear regulators, DC-DC converters, battery
chargers, data converters, communications interface circuits, RF signal conditioning circuits, and
many other analog functions. Applications for Linear Technology’s high performance circuits
include telecommunications, cellular telephones, networking products such as optical switches,
notebook and desktop computers, computer peripherals, video/multimedia, industrial
instrumentation, security monitoring devices, high-end consumer products such as digital
cameras and MP3 players, complex medical devices, automotive electronics, factory automation,
process control, and military and space systems. For more information, visit www.linear.com
LT, LTC, LTM and
are registered trademarks of Linear Technology Corp.
Press Contacts:
John Hamburger, Director Marketing Communications
[email protected]
Tel: 408-432-1900 ext 2419
Doug Dickinson, Media Relations Manager
[email protected]
Tel: 408-432-1900 ext 2233