New Integrated Circuit For Controlling the Brightness of LEDs
IRVINE, Calif.--Jan. 13, 2003--| -- | Single driver can control from six to more than 100 LEDs |
| -- | Micro-miniature package saves space and cuts cost |
| -- | Provides both analog and digital dimming capability |
Microsemi Corp. , a leading manufacturer of power management integrated circuits, announced a new six-channel LED sink driver today for controlling the brightness of more than 100 -- or as few as six -- standard green, red or yellow light emitting diodes from a single chip only four millimeters square.
Designated the LX1991(TM), the new programmable circuit targets high-quality dimmable LED displays. Its high accuracy, dual mode dimming, and controlled current switching time allow consistent color hue at brightness ratios of up to 1000:1, while keeping electromagnetic emissions in check.
"Among its many applications, the LX1991 driver has a 43 volt breakdown capability and a wide compliance voltage range that makes it ideal for automotive in-dash displays," said Kelly Jones, vice president and general manager of Microsemi Integrated Products.
The LX1991's micro-miniature package requires only two additional components in application, providing significant board space and cost reductions over conventional discrete component solutions. The four millimeter square MLPQ package is ideal with respect to power dissipation and has less than 1 microampere of drain current in sleep mode.
Dual mode dimming allows either analog (current amplitude) or digital (duty cycle) control, and both methods can be used simultaneously. A single external capacitor allows symmetrical slope control of the output current when pulse dimming. The six-channel design features independent sink currents -- channels can be left floating or multiple channels can be connected together to sink more current in a single load.
The LX1991 is available for immediate sampling and delivery, with 10K quantity pricing at $1.08. Complete technical information is available on the Microsemi Web site, www.Microsemi.com. Samples and evaluation boards can be ordered through this site, or from Microsemi sales representatives and franchised distributors.
About Microsemi
Microsemi is a leading designer, manufacturer and marketer of analog, mixed-signal and discrete semiconductors. The company's semiconductors manage and control or regulate power, protect against transient voltage spikes and transmit, receive and amplify signals.
Microsemi's products include individual components, as well as complete circuit solutions that enhance customer designs by improving reliability, battery optimization, reducing size or protecting circuits. Markets the company serves include mobile connectivity, computer/peripherals, telecom/datacom, medical, industrial, automotive, digital media, space/satellite and military.
More information may be obtained by contacting the company directly or by visiting its Web site at http://www.microsemi.com.
Please read the following factors that can materially affect Microsemi's future results.
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