Product category: Power Supply ICs and Controllers
News Release from: Catalyst Semiconductor | Subject: CAT3606
Edited by the Electronicstalk Editorial Team on 27 January 2005
LED driver keeps
big backlights flicker free
Catalyst Semiconductor has expanded its family of solid-state illumination products with the addition of a new high-efficiency white LED driver
Designed to deliver uniform, flicker-free backlighting for large panel and dual LCD systems, the CAT3606 regulated charge pump offers a single chip replacement for the inductor boost circuits that are conventionally used in high brightness backlighting applications. Due to its high output current capability, the CAT3606 can also be used to drive a main plus submobile phone display, or a main display plus low-power camera flash.
This article was originally published on Electronicstalk on 27 January 2005 at 8.00am (UK)
Related stories
Convertor is cooler choice for LED driving
Buck convertor offers a simpler and smaller alternative to linear regulators for driving high-brightness LEDs in step-down applications, eliminating the need for heatsinks
LDOs are power-saving alternatives
Catalyst's LDO products are designed with a 'quick start' feature to ensure a fast turn-on time of less than 150us, further optimising the devices for low-power applications
Independent control of each LED bank enables PWM dimming and a standby mode on each of the four LED main and two LED subdisplays.
To reduce battery drain, the CAT3606 also features a complete system shutdown enable where less than 1uA is consumed.
The addition of a flexible digital interface caters for a wide variety of brightness control circuits.
The low noise, low ripple 1MHz fixed frequency control scheme enables the use of small external capacitors, reducing cost and board size.
Further, the device's inductor-less design minimise EMI.
Optimised for use with lithium ion battery systems, the CAT3606 maximises power transfer by achieving very high efficiencies of up to 90%.
Each output channel is current regulated to provide precise matching of up to six parallel LEDs at 30mA per channel, guaranteeing even brightness control across the panel.
A unique fractional charge pump topology automatically switches from 1x LDO mode to 1.5x boost mode to ensure flicker-free LED current over the life of the battery.
Short circuit detect/disable is provided on all channels The CAT3606 is available in a space-saving 4 x 4mm 16-lead thin QFN package with a maximum height of 0.8mm.
Priced at $1.48 in 1000-off quantities, the CAT3606 is available in halogen and lead free environmentally friendly 'green' packages that are fully RoHS compliant.
• Catalyst Semiconductor: contact details and other news
• Email this article to a colleague
• Register for the free Electronicstalk email newsletter
• NEW
• Electronicstalk Home Page
Related Business News
Applications/Solutions
High-performance analog ICs provide efficient, compact and dependable solutions for engine management systems, body electronics and comfort systems.
Taiwan stocks end down in biggest...
...drop in over 1 yr. Taipei, July 27 (Reuters) - Taiwan shares fell 4.22 percent on Friday to their lowest close in three weeks, marking their largest one-day percentage drop in more than a year, after a sell-off on Wall Street hurt big exporters such as TSMC .
Nippon Oil Aug refining seen flat, eyes Sudan crude
Tokyo, July 27 (Reuters) - Japan's top oil refiner Nippon Oil Corp. will keep its August processing volumes steady versus a year ago to meet summer gasoline demand and is seeking more Nile Blend crude to meet higher utility use.
Fluor Gains Eastman Chemical Gasification Plant Feed Work
Fluor Corporation announced today that it was selected by Eastman Chemical Company to provide front-end engineering and design work for a $1.6 billion gasification project along the Texas Gulf Coast.
Migao Corporation Secures Preferential Natural Gas Prices
Toronto, Ontario-- - Migao Corporation , a leading producer of specialty potash fertilizers for the Chinese market, is pleased to announce that it has negotiated preferential natural gas prices in Sichuan Province from China Petroleum & Chemical Corpora
Search the Pro-Talk network of sites
