Product category: Power Supply ICs and Controllers
News Release from: National Semiconductor | Subject: LM5008
Edited by the Electronicstalk Editorial Team on 26 April 2004
Buck regulator ramps up to 100V input
The LM5008 is billed as the industry's first 100V buck bias regulator, operating at up to 90% power efficiency and delivering significant power savings for customers' designs.
The LM5008 is billed as the industry's first 100V buck bias regulator, operating at up to 90% power efficiency and delivering significant power savings for customers' designs The LM5008 has an integrated 100V, 500mA N-channel power mosfet and all the functions needed to implement a compact, highly efficient bias power supply
This article was originally published on Electronicstalk on 5 Jan 2001 at 8.00am (UK)
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It is the latest addition to National's LM5000 family of high-voltage power solutions and is the company's second generation high-voltage buck bias regulator.
The LM5008 leverages National's latest advanced 100V analogue-BiCMOS-DMOS IC (ABCDXV-2) process technology to extend the voltage range of the popular LM5007 80V buck bias regulator, which was introduced last year.
It is ideal for use in 48V power converters, and in telecommunications, automotive and battery-powered applications.
The LM5008 is used to step down a primary-side distributed voltage bus (up to 100V input) and produces a low-voltage (12V typical) bias supply for primary-side control and drive devices.
Using the LM5008, a power supply designer can replace a complex, inefficient flyback convertor with a simple, efficient buck regulator.
Additionally, as the buck regulator switches at a higher frequency, filter components are smaller, liberating much-needed board space.
"National Semiconductor's LM5008 builds on the success of our LM5000 family of high-voltage power products and showcases National's process, packaging and manufacturing strengths, as well as our high-voltage IC design capabilities.
The LM5008 combines our advanced ABCDXV-2 process and LLP thermal packaging technologies to provide our customers with leading-edge power management products", said Paul Greenland, Marketing Director of National Semiconductor's Power Management Group.
"The LM5008 operates at high frequencies while providing efficiencies up to 90%, compared to competitive solutions with 150kHz typical operating frequency and 50 to 65% power efficiency.
This increased switching frequency and efficiency translates into significant space and power savings in our customers' designs".
Available today, National's LM5008 is offered in an MSOP-8 package or in a tiny, 4 x 4mm 8-pin LLP package and is priced at US $1.15 each in 1000-unit volumes.
The LM5008 is available for electrical simulation and design optimisation on National's Webench online design tool.
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