DC/DC Controllers Generate Positive or Negative Regulated Voltage & Feature -55ºC to 150ºC Maximum Junction Temperature

News Release ⎜ www.linear.com
DC/DC Controllers Generate Positive or Negative Regulated Voltage &
Feature -55°C to 150°C Maximum Junction Temperature
MILPITAS, CA – April 12, 2010 – Linear Technology Corporation announces the H- and
MP-grade versions of the LT3757 and LT3758 wide input range DC/DC controllers for boost,
flyback, SEPIC and inverting power supply applications. These devices are capable of generating
either a positive or negative regulated output voltage with a single device by having two internal
voltage feedback error amplifiers and reference voltages. These H- and MP-grade versions are
tested and guaranteed to operating junction temperature ranges from -40°C to 150°C and -55°C
to 125°C, respectively.
The LT3757 operates with an input voltage ranging from 2.9V to 40V and the LT3758
operates over a 5.5V to 100V input voltage range. The devices achieve efficiencies up to 96%,
making them well suited for industrial, automotive, military, medical and telecom applications.
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 fixed frequency, current mode control results in stable operation over a wide range of
supply and output voltages, along with all ceramic capacitor designs, enabling a smaller solution
size. Additional features include programmable soft-start, input undervoltage lockout, output
overvoltage and overcurrent protection.
Both grades are available in the thermally enhanced MSOP-10 package. The 1000-piece
price starts at $2.56 each for the H-grade devices and $5.98 each for the MP-grade parts. For
more information, visit www.linear.com.
DC/DC Controllers Generate Positive or Negative Regulated Voltage &
Feature -55°C to 150°C Maximum Junction Temperature
page 2
Photo Caption: -55°C to 150°C Operating Temperature Boost, Multitopology Controller
Summary of Features: LT3757/LT3758
For Boost, Flyback, SEPIC & Inverting Applications
LT3757 Input Operating Voltage: 2.9V to 40V
LT3758 Input Operating Voltage: 5.5V to 100V
Positive or Negative Output Voltage Setting with a Single Feedback Pin
Selectable Fixed 100kHz to 1MHz Operating Frequency
Synchronizable to an External Cloc
Integrated Low-Side Driver
True Current Mode Control
Low Shutdown Current < 1uA
Output Overvoltage & Overcurrent Protection
Programmable Input Undervoltage Lockout with Hysteresis
H-Grade: -40°C to 150°C Operating Junction Temperature
MP-Grade: -55°C to 125°C Operating Junction Temperature
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,
uModule® products, 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.
LT, LTC, LTM, uModule 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
[email protected]
Tel 408-432-1900 ext 2419
Alan Timmins
[email protected]
Tel: +44-1-252-629937
Doug Dickinson, Media Relations Manager
[email protected]
408-432-1900 ext 2233