Product category: Power Supply ICs and Controllers
News Release from: Linear Technology Corp | Subject: LTC3780
Edited by the Electronicstalk Editorial Team on 24 May 2005
Switching regulator is flexible about
input
The LTC3780 is a high performance buck-boost switching regulator controller that operates from input voltages above, below or equal to the output voltage.
Linear Technology has introduced the LTC3780, a high performance buck-boost switching regulator controller that operates from input voltages above, below or equal to the output voltage Until now, high power buck-boost circuits have relied on transformers or two DC/DC convertors - one for step-up (boost) and the other for step-down (buck) conversion
This article was originally published on Electronicstalk on 28 Jul 2004 at 8.00am (UK)
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The LTC3780 operates using a single inductor and can deliver output power as high as 75W; a four-switch synchronous rectification delivers efficiencies up to 97%.
The constant frequency current mode architecture allows a phase-lockable frequency of up to 400kHz.
With a wide 4 to 30V (36V maximum) input and 0.8 to 30V output range and seamless transitions between operating modes, the LTC3780 is ideal for automotive, telecomms and battery-powered systems.
The LTC3780 employs a proprietary current control architecture for constant frequency operation in buck or boost mode.
In addition, fault protection is provided for overvoltage, over current and short circuit conditions in all operating modes.
A power good output open-drain pin signals whether the output voltage is in or out of regulation.
The LTC3780 offers three operating modes: constant frequency, burst mode operation and discontinous current.
The LTC3780 is offered in 24-lead SSOP and 5 x 5mm QFN packages.
1000-piece prices start at $4.65 each. Request a free brochure from Linear Technology Corp ...
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