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36V, 4A Synchronous Step-Down Regulator Now Offered in High Temperature “H” Grade & High Reliability “MP” Grade
MILPITAS, CA – October 12, 2011 – Linear Technology announces
the high temperature (H-grade) and High Reliability (MP-grade)
versions of the LT3690. This 36V input capable, synchronous step-down
switching regulator can deliver up to 4A of continuous output
current at efficiencies as high as 93%. The LT3690 operates within
a VIN range of 3.9V to 36V, and offers transient protection to 60V,
making it well suited for load dump and cold-crank conditions found
in automotive applications. The LT3690's Burst Mode® operation
requires only 70µA of quiescent current, ideal for applications
such as automotive or telecom systems, which demand always-on
operation and optimum battery life. Switching frequency is
user-programmable from 170kHz to 1.5MHz, enabling the designer to
optimize efficiency while avoiding critical noise-sensitive
frequency bands. The combination of its 4mm x 6mm
QFN-26 package and high switching frequency keeps external
inductors and capacitors small, providing a compact, thermally
efficient footprint.
The H-grade version operates from -40°C to a junction temperature of 150°C, and is guaranteed and tested throughout this temperature range. Similarly, the MP-grade version operates from -55°C to a junction temperature of 150°C, and is guaranteed and tested throughout this temperature range. Electrical specifications for the H-grade and the MP-grade are identical to the E and I grades. They are ideal for automotive, industrial and military applications, which are subject to high ambient temperatures.
Both the LT3690HUFE and the LT3690MPUFE are available in 26-lead 4mm x 6mm QFN packages. Pricing starts at $5.70 and $14.70 each, respectively, for 1,000-piece quantities and are available from stock. For more information, visit www.linear.com/product/LT3690.
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Summary of Features:
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36V, 4A (IOUT), Synchronous |
