Product category: Power Supply ICs and Controllers
News Release from: Linear Technology Corp | Subject: LTC3415
Edited by the Electronicstalk Editorial Team on 15 May 2006
Buck regulator delivers up to 7A
The LTC3415 high-efficiency monolithic synchronous buck regulator has a phase-lockable constant-frequency current-mode architecture.
Linear Technology has announced the LTC3415, a high efficiency, monolithic synchronous buck regulator using a phase lockable, constant frequency, current mode architecture A single LTC3415 can deliver up to 7A of output current at voltages as low as 0.6V
This article was originally published on Electronicstalk on 28 Jul 2004 at 8.00am (UK)
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In addition, the LTC3415's PolyPhase operation enables multiple (up to 12 in total) LTC34515s to be run with interleaved phases while using minimal input and output capacitance.
When 12 LTC3415s are cascaded together, they can drive a single load with up to 84A of output current while current sharing equally between the units.
Its input voltage range of 2.5V to 5.5V makes it ideal for single cell Li-ion battery as well as point-of-load applications.
Its default switching frequency is internally set at 1.5MHz, allowing the use of tiny surface mount inductors and capacitors.
Combined with a 5 x 7mm QFN package, it provides a very compact high-current power conversion solution.
The LTC3415 uses internal switches with an on-resistance of only 0.025ohm (N-channel) and 0.032ohm (P-channel) to deliver efficiencies as high as 96%.
It also uses low dropout 100% duty cycle operation to allow output voltages equal to the input.
Selectable burst mode operation offers no load quiescent current of only 450uA, and less than1uA in shutdown.
If the application is noise sensitive, the LTC3415 can be configured to skip pulses, provide forced continuous operation or utilise spread spectrum frequency switching to reduce noise and potential RF interference.
Additionally, the LTC3415 can be externally synchronised from 750kHz to 2.25MHz to further reduce noise.
Other features include a power good voltage monitor, output tracking and margining capability plus thermal protection.
For applications that require up to 84A of output current, and where a small solution size and low noise are the defining factors, the LTC3415 is the best solution currently in the marketplace.
The LTC3415 is available from stock in a 38-pin, 5 x 7mm QFN package.
Pricing starts at $6.50 each in 1000-piece quantities. Request a free brochure from Linear Technology Corp ...
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