Product category:
Power Supply ICs and Controllers
News Release from: Linear Technology Corp | Subject: LT3685
Edited by the Electronicstalk Editorial
Team on 21 December 2007
Regulator is made for automotive
applications
The LT3685 is a 2A, 38V step-down switching regulator with input transient protection up to 60V.
Newly announced by Linear Technology, the LT3685 is a 2A, 38V step-down switching regulator with input transient protection up to 60V The LT3685's 3.6 to 38V operating input voltage range and 60V transient protection make it ideal for load dump and cold-crank conditions found in automotive applications
This article was originally published on Electronicstalk on 28 Jul 2004 at 8.00am (UK)
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Its 3A internal switch can deliver up to 2A of continuous output current at voltages as low as 0.79V.
Switching frequency is user programmable from 200kHz to 2.4MHz, optimising efficiency while avoiding critical noise-sensitive frequency bands.
Its high switching frequency keeps the external capacitors and inductor small, and the 3 x 3mm DFN-10 package (or thermally enhanced MSOP-10E) provides a very compact, thermally efficient footprint.
The LT3685 uses a high efficiency 3A, 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, and the LT3685's current mode topology enables fast transient response and excellent loop stability.
Other features include external synchronisation (from 250kHz to 2MHz), a power good flag and soft-start capability.
The LT3685EDD and LT3685EMSE are priced starting at US $3.05 each and $3.15 each, respectively, for 1000-piece quantities.
The LT3685IDD and LT3685IMSE, tested and guaranteed to operate from a -40degC to 125degC operating junction temperature, are priced at US $3.66 and $3.78 each, respectively in 1000-piece quantities.
All versions are available from stock. Request a free brochure from Linear Technology Corp ...
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