15V Input & Output, 1.5A Monolithic Synchronous Buck-Boost DC/DC Converter Features 95% Efficiency & Low Noise Operation

News Release  www.linear.com
15V Input & Output, 1.5A Monolithic Synchronous Buck-Boost DC/DC
Converter Features 95% Efficiency & Low Noise Operation
MILPITAS, CA – January 22, 2014 – Linear Technology announces the LTC3111, a synchronous
buck-boost converter that delivers up to 1.5A of output current from a wide range of power
sources, including single or multiple cell batteries, supercapacitor stacks and wall adapters. The
device’s 2.5V to 15V input and output voltage range provides a regulated output from inputs
above, below or equal to the regulated output. The low noise buck-boost topology incorporated
into the LTC3111 delivers a continuous, jitter-free transition between buck and boost modes,
making it ideal for RF and other noise-sensitive applications that must maintain a low-noise,
constant output voltage with a variable input power source.
In many applications, battery run time is significantly extended over step-down only
solutions. The LTC3111’s default 800kHz switching frequency can be synchronized to an
external 600KHz to 1.5MHz clock, and its proprietary third-generation buck-boost PWM
circuitry ensures low noise and high efficiency while minimizing the size of external
components. The combination of tiny externals and a 3mm x 4mm DFN or MSOP-16E package
provides a compact solution footprint.
The LTC3111 includes four internal low RDS(ON) N-channel MOSFETs and uses a single
inductor to deliver efficiencies of up to 95%. User-selectable Burst Mode® operation lowers
quiescent current to only 49µA, improving light load efficiency and further extending battery run
time. For noise-sensitive applications, Burst Mode operation can be disabled. Other features
15V Input & Output, 1.5A Monolithic Synchronous Buck-Boost DC/DC
Converter Features 95% Efficiency & Low Noise Operation
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include soft-start, overvoltage protection, short-circuit protection, thermal shutdown and output
disconnect.
The LTC3111EDE is available in a 14-lead 3mm x 4mm DFN package and the
LTC3111EMSE is offered in a thermally enhanced 16-lead MSOP package. Pricing starts at
$3.50 each and $3.60 each, respectively. Industrial grade versions, the LTC3111IDE and
LTC3111IMSE, are guaranteed to operate over the -40°C to 125°C operating junction
temperature range and are priced starting at $3.85 each and $3.96 each, respectively. High
temperature grade versions, the LTC3111HDE and LTC3111HMSE, are guaranteed to operate
over the -40°C to 150°C operating junction temperature range and are priced starting at $4.16
each and $4.21 each, respectively. Finally, High reliability grade versions, the LTC3111MPDE
and LTC3111MPMSE, are guaranteed to operate over the -55°C to 150°C operating junction
temperature range and are priced starting at $10.40 each and $10.69 each, respectively. All
pricing is for 1,000 piece quantities and all versions are available from stock. For more
information, visit www.linear.com/product/LTC3111
Photo Caption: 1.5A, 15V Synchronous Buck-Boost DC/DC Converter Offers Extended
Battery Run Time
Summary of Features: LTC3111
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15V, 1.5A, Synchronous Buck-Boost Regulator
Regulated Output with VIN Above, Below or Equal to VOUT
2.5V to 15V Input & Output Voltage Range
1.5A Continuous Output Current: VIN ≥ 5V,VOUT = 5V, PWM Mode
Single Inductor
Accurate RUN Threshold
Up to 95% Efficiency
800kHz Switching Frequency, Synchronizable Between 600kHz & 1.5MHz
49μA No-Load Quiescent Current in Burst Mode® Operation
Output Disconnect in Shutdown
Shutdown Current < 1μA
Internal Soft-Start
15V Input & Output, 1.5A Monolithic Synchronous Buck-Boost DC/DC
Converter Features 95% Efficiency & Low Noise Operation
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Small, Thermally Enhanced 14-Lead (3mm × 4mm × 0.75mm) DFN & 16-Lead MSOP Packages
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 over 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, Linear Technology, the Linear logo, Burst Mode and µModule 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
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