36V, 2A(IOUT), 500kHz Step-Down DC/DC Converter in 3mm x 3mm DFN

News Release ⎜ www.linear.com
36V, 2A(IOUT), 500kHz Step-Down DC/DC Converter in 3mm x 3mm DFN
MILPITAS, CA – January 22, 2008 – Linear Technology Corporation announces the LT1912, a
2A, 36V step-down switching regulator packaged in a 3mm x 3mm DFN (or MSOP-10E). The
LT1912’s 3.6V to 36V input voltage range makes it ideal for load dump and cold-crank
conditions found in automotive applications. Its 3.2A internal switch can deliver up to 2A of
continuous output current to voltages as low as 0.79V. Switching frequency is
user-programmable from 200kHz to 500kHz, optimizing efficiency while keeping external
components small. The combination of its 3mm x 3mm DFN-10 package
(or thermally enhanced MSOP-10E) and tiny externals provide a very compact, thermally
efficient footprint.
The LT1912 utilizes a high efficiency 3.2A, 0.25Ohm switch, with the necessary boost
diode, oscillator, control and logic circuitry integrated on-chip. Special design techniques and a
new high voltage process enable high efficiency over a wide input voltage range while the
LT1912’s current mode topology enables fast transient response and excellent loop stability.
Other features include external synchronization (from 250kHz to 500kHz), a power good flag
and soft-start capability.
The LT1912EDD and LT1912EMSE are priced starting at $2.95 each and $3.05 each,
respectively, for 1,000-piece quantities. The LT1912IDD and LT1912IMSE, tested and
guaranteed to operate from a -40°C to 125°C operating junction temperature, are priced at $3.54
and $3.66 each, respectively in 1,000-piece quantities. All versions are available from stock.
36V, 2A(IOUT), 500kHz Step-Down DC/DC Converter in 3mm x 3mm DFN
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Photo Caption: 36V, 2A (IOUT) Step-Down DC/DC Converter
Summary of Features: LT1912
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Wide Input Range: Operation From 3.6V to 36V
2A Maximum Output Current
Adjustable Switching Frequency: 200kHz to 500kHz
Low Shutdown Current: ISD < 1uA
Integrated Boost Diode
Synchronizable Between 250kHz to 500kHz
Saturating Switch Design: 0.25ohm On-Resistance
0.790V Feedback Reference Voltage
Output Voltage: 0.79V to 20V
Soft-Start Capability
Small 10-Pin Thermally Enhanced MSOP & 3mm × 3mm DFN 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,
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. For more
information, visit www.linear.com.
LT, LTC, LTM and
are registered trademarks and uModule is a trademark 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
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