Low VIN Capable 5A DC/DC Converter Generates Positive or Negative Regulated Voltage

News Release ⎜ www.linear.com
Low VIN Capable 5A DC/DC Converter
Generates Positive or Negative Regulated Voltage
MILPITAS, CA – July 31, 2012 – Linear Technology Corporation announces the LT3959, a
highly versatile DC/DC converter for boost, SEPIC and inverting power supply applications.
This device operates over an input voltage range of 2.5V to 40V, has an onboard 6A/40V power
switch and achieves efficiencies up to 96%, making it well suited for industrial, automotive,
medical and telecom applications.
The LT3959 can generate either positive or negative regulated output voltage with its two
internal voltage feedback error amplifiers and reference voltages. One set is for positive output
voltages and the other is for negative output voltages, both off a single feedback pin. With a
programmable fixed or synchronizable operating frequency from 100kHz to 1MHz, designers
can choose a wide range of inductors and capacitors to optimize size, performance and cost. The
LT3959’s current-mode control results in stable operation over a wide range of supply and
output voltages. The device supports designs using only ceramic capacitors, enabling a smaller
solution size. Additional features include programmable soft-start, adjustable input undervoltage
lockout and a power good pin.
The LT3959 operates from a -40°C to 125°C temperature range and is available in a
5mm x 6mm QFN-36 package. The 1000-piece price starts at $3.05 each. For more information,
visit www.linear.com/product/LT3959
Low VIN Capable 5A DC/DC Converter
Generates Positive or Negative Regulated Voltage
page 2
Photo Caption: Boost, SEPIC & Inverting DC/DC Converter
Summary of Features: LT3959
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For Boost, SEPIC & Inverting Applications
Wide Input Operating Voltage: 2.5V to 40V
Onboard 6A/40V Power Switch
Positive or Negative Output Voltage Setting with a Single Feedback Pin
Selectable Fixed 100kHz to 1MHz Operating Frequency
Synchronizable to an External Clock
Programmable Soft-Start
True Current-Mode Control
Output Overvoltage & Overcurrent Protection
Programmable Input Undervoltage Lockout with Hysteresis
About Linear Technology
Linear Technology Corporation, a member of the S&P 500, has been designing, manufacturing
and marketing a broad line of high performance analog integrated circuits for major companies
worldwide for three decades. The Company’s products provide an essential bridge between our
analog world and the digital electronics in communications, networking, industrial, automotive,
computer, medical, instrumentation, consumer, and military and aerospace systems. Linear
Technology produces power management, data conversion, signal conditioning, RF and interface
ICs, µModule®subsystems, and wireless sensor network products. For more information, visit
www.linear.com
LT, LTC, LTM, µModule and
are registered trademarks of Linear Technology Corp. All other trademarks are the
property of their respective owners.
Press Contacts:
North America / Worldwide
UK & Nordic
John Hamburger, Director Marketing
Communications
[email protected]
Tel: 408-432-1900 ext 2419
Alan Timmins
[email protected]
Tel: +44-1-252-629937
Doug Dickinson, Media Relations Manager
[email protected]
Tel: 408-432-1900 ext 2233