Worcester, Mass.—Allegro MicroSystems' A8483 is a 1.2 MHz step-up regulator chip suited for general purpose battery-powered work as well as such applications as bias/backlighting supplies for plasma and liquid-crystal displays. Other applications include cellular phones, PDAs, camcorders, personal stereos, MP3 players, cameras, and mobile GPS systems.
Typically, the 5-pin chip is called on to deliver 15 mA or so at 15 volts from a 2.5 to 10-volt input for small LCDs (40-80 mA at 25-32 volts for plasma displays, LCD TVs, and the like). Maximum output voltage can be set to 35 V. The device's switch current limit is 350 mA.
The product datasheet is available at
www.allegromicro.com/datafile/8483.pdf. The A8483, in a five-pin 3-by-3 mm MLP/TDFN package, is priced at 47 cents eqch in 10k quantities. Lead time is eight to 12 weeks.
Allegro Microsystems, 1-508-853-5000, www.allegromicro.com