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|High Efficiency Switching Regulator from STMicroelectronics Voted
Winner in Electronic Product China’s Top 10 DC-DC 2005 Awards|
Geneva – STMicroelectronics
has been named in the Top 10 DC-DC 2005 Awards by Electronic Product China (EPC) magazine, for the very efficient
and easy to use L5973 2A Step Down Switching Regulator. The device is part of ST’s L597x family of monolithic
regulators in small outline packages which are capable of delivering up to 2.5A, over a wide voltage range, for use
in advanced price-sensitive applications.
With its integrated power switch, the L5973 is available in the
compact SO8-size HSOP8 exposed-pad package for improved heat dissipation. It operates over a wide 4.4V to 36V supply
voltage, and its output is adjustable from 1.2V to 35V, making it an ideal DC-DC choice across a broad range of
applications, and achieving an excellent balance between high performance and low cost. Efficiency is typically 90%
(5V output from a 12V supply).
The high switching frequency (250kHz) and a full set of embedded
protection circuits allow the size and the number of external components to be minimized, so reducing the size, cost
and design time of the application, and increasing reliability. The L5973 is a ‘user-friendly’ product which is easy
to design with – even for non-specialist power conversion designers – and ST offers on-line switching regulator
simulation software, in addition to evaluation boards and application notes, to help board designers shorten the
Integrated safety features include protection against feedback disconnection,
internal current limiting and thermal shutdown. Master/slave synchronization is possible at up to 800kHz, and an
Inhibit control input disables the device to cut quiescent current to typically 50 microamps.
has introduced the L597x family over the last two years to expand its long established switching regulator
portfolio. While earlier products were used mainly in industrial applications and traditional power supplies,
increasing demand from ‘new applications’ for compact regulators with 0.5A to 2.5A current rating is now being met
by the new devices.
Consumer applications such as set-top boxes (STBs), DVD players and LCD
monitors, as well as portable instruments, graphics cards, wireless cards, DSL modems and many computer peripherals
such as hard disk drives and printers, have a common technical requirement for a lower current DC-DC converter that
requires very little total board area while delivering high performance and good reliability. Distributed power
systems also benefit from the compact design.
The L5973 is in volume production now. US pricing
is $1.00 each in quantities of 25,000 units.
Lunes, 02 Enero, 2006 - 05:46