Feeds

Power converter makes for extra flash screens

Nat Semi 'coolness' claim

  • alert
  • submit to reddit

Providing a secure and efficient Helpdesk

National Semiconductor has developed a series of current-regulated power converters, optimised for white LED backlighting of mobile phone screens, PDAs and digital cameras.

Nat Semi says the drivers eliminate the need for inductors or resistors by regulating the power output through each LED, so that they are matched to within one percent.

Drivers include the LM2791-H/L, which has PWM ands a 5:1 ration analog brightness control, the LM2792-H/L with zero to full current control over brightness. The company says these will be used to create new effects on the displays, to add what they call "coolness" to the product.

Robert Fischer, product marketing manager at Nat Semi's portable power systems in Europe, commented: "Colour displays using white LEDs already dominate the mobile phone landscape in Japan and it is inevitable that the rest of the world will follow."

Later this year, the LM2794/95 drivers will be released as well. ®

Providing a secure and efficient Helpdesk

More from The Register

next story
Phones 4u slips into administration after EE cuts ties with Brit mobe retailer
More than 5,500 jobs could be axed if rescue mission fails
Driving with an Apple Watch could land you with a £100 FINE
Bad news for tech-addicted fanbois behind the wheel
Phones 4u website DIES as wounded mobe retailer struggles to stay above water
Founder blames 'ruthless network partners' for implosion
Radio hams can encrypt, in emergencies, says Ofcom
Consultation promises new spectrum and hints at relaxed licence conditions
Special pleading against mass surveillance won't help anyone
Protecting journalists alone won't protect their sources
Big Content Australia just blew a big hole in its credibility
AHEDA's research on average content prices did not expose methodology, so appears less than rigourous
Vodafone to buy 140 Phones 4u stores from stricken retailer
887 jobs 'preserved' in the process, says administrator PwC
prev story

Whitepapers

Secure remote control for conventional and virtual desktops
Balancing user privacy and privileged access, in accordance with compliance frameworks and legislation. Evaluating any potential remote control choice.
Intelligent flash storage arrays
Tegile Intelligent Storage Arrays with IntelliFlash helps IT boost storage utilization and effciency while delivering unmatched storage savings and performance.
WIN a very cool portable ZX Spectrum
Win a one-off portable Spectrum built by legendary hardware hacker Ben Heck
High Performance for All
While HPC is not new, it has traditionally been seen as a specialist area – is it now geared up to meet more mainstream requirements?
Beginner's guide to SSL certificates
De-mystify the technology involved and give you the information you need to make the best decision when considering your online security options.