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Linear Announces LT3680 Switching Regulator
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LT3680’s Burst Mode operation offers ultra-low quiescent current, well suited for applications such as automotive or telecom systems.
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Friday, August 17, 2007:
Linear Technology Corporation has announced LT3680 -- a 3.5A, 36V step-down switching regulator with Burst Mode operation to keep quiescent current under 75uA. LT3680 operates within a VIN range of 3.6V to 36V, making it ideal for load dump and cold-crank conditions found in automotive applications.
LT3680's 4.6A internal switch can deliver up to 3.5A of continuous output current to voltages as low as 0.79V.
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Switching frequency is user programmable from 250kHz to 2.4MHz, enabling the designer to optimise efficiency while avoiding critical noise-sensitive frequency bands. Its 3mm x 3mm DFN-10 package and high switching frequency keep external inductors and capacitors small.
LT3680 utilises a high-efficiency 4.6A, 95mOhm switch, with the necessary boost diode, oscillator, control and logic circuitry integrated into a single chip. Low ripple Burst Mode operation maintains high efficiency at low output currents while keeping output ripple below 15mVPK-PK. The device's current mode topology enables fast transient response and excellent loop stability, the company said.
Pricing for LT3680EDD and LT3680EMSE starts at $4.15 and $4.25 each, respectively, for 1,000-piece quantities, and LT3680IDD and LT3680IMSE are priced at $4.98 and $5.10 each, respectively, in 1,000-piece quantities.
Do you want to know if Microsoft's Men in Black ever met Linus Torvalds? Here is what Linus reveals! Read full interview.
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