15V, 300mA Synchronous Buck Converters with Only 1.8µA Quiescent Current

News Release ⎜ www.linear.com
15V, 300mA Synchronous Buck Converters with
Only 1.8µA Quiescent Current
MILPITAS, CA – November 28, 2011 – Linear Technology announces the LTC3103 and the
LTC3104, 15V, fixed frequency synchronous buck converters capable of delivering 300mA of
continuous current to output voltages from 0.6V to 13.8V. The LTC3103 consumes just 1.8µA
of quiescent current, while the LTC3104 (which offers a 10mA programmable LDO output)
requires only 2.6µA of quiescent current. These devices are ideal for a wide range of
battery-powered applications including industrial control power, remote sensor networks, low
power wireless systems and energy harvesting applications. Both devices operate from an input
voltage range of 2.5V to 15V facilitating operation from a wide range of input sources, including
single- or multi-cell batteries, supercapacitors and system rails.
The LTC3103 and LTC3104 operate at a fixed 1.2MHz switching frequency and utilize
synchronous rectification to deliver efficiencies as high as 95%. For applications that demand
low noise, both the LTC3103 and LTC3104 can operate in a “forced continuous mode” where
the part will operate at the 1.2MHz switching frequency. The device can also be commanded to
automatically transition from fixed frequency to Burst Mode® operation to achieve high
efficiency over an extremely wide range of load currents. Internal compensation, small-footprint
DFN and MSOP packages and fixed 1.2MHz switching frequency enable the use of just a few
tiny external components to offer very compact solution footprints. An accurate, programmable
RUN comparator offers the user flexibility in programming at what input voltage the part will be
15V, 300mA Synchronous Buck Converters with
Only 1.8µA Quiescent Current
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enabled. Other features include Power Good, integrated soft-start, and over-temperature
protection.
Pricing for the LTC3103EDD and LTC3103EMSE starts at $2.45 each, for 1,000-piece
quantities. Industrial grade versions, the LTC3103IDD and LTC3103IMSE, are tested and
guaranteed to operate from a -40°C to 125°C operating junction temperature, and are priced at
$2.70 each, in 1,000-piece quantities.
Pricing for the LTC3104EDE and LTC3104EMSE starts at $2.70 each, for 1,000-piece
quantities. Industrial grade versions, the LTC3104IDE and LTC3104IMSE, are tested and
guaranteed to operate from a -40°C to 125°C operating junction temperature, priced at $2.96
each, in 1,000-piece quantities. All versions are available from stock. For more information, visit
www.linear.com/product/LTC3104 and www.linear.com/product/LTC3103
Photo Caption: 15V, 300mA Buck Converter with IQ=1.8 µA
Summary of Features: LTC3103 & LTC3104
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Ultralow Quiescent Current: 1.8μA (LTC3103), 2.6μA (LTC3104)
Synchronous Rectification: Efficiency Up to 95%
Wide VIN Range: 2.5V to 15V
Wide VOUT Range: 0.6V to 13.8V
300mA Output Current
10mA LDO (LTC3104) with 1µA IQ
User-Selectable Automatic Burst Mode® or Forced Continuous Operation
Accurate & Programmable RUN Pin Threshold
1.2MHz Fixed Frequency PWM
Internal Compensation
Power Good Status Output for VOUT
LTC3103 Available in Thermally Enhanced 3mm × 3mm × 0.75mm, 10-Pin DFN & 10-Pin MSOP
Packages
LTC3104 Available in Thermally Enhanced 3mm × 4mm × 0.75mm, 14-Pin DFN & 16-Pin MSOP
Packages
15V, 300mA Synchronous Buck Converters with
Only 1.8µA Quiescent Current
page 3
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, and µModule® subsystems.
LT, LTC, LTM, µModule, Burst Mode 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
jhamburger@linear.com
Tel: 408-432-1900 ext 2419
Alan Timmins
alan@ezwire.com
Tel: +44-1-252-629937
Doug Dickinson, Media Relations Manager
ddickinson@linear.com
Tel: 408-432-1900 ext 2233