Targeted at mobile backlighting applications, the latest LED driver device family supports up to six LEDs with a maximum current of 32mA per channel. The new 1-wire interface products join the previously announced PWM interface products to give mobile phone design engineers more flexibility with a new set of performance/interface choices.
"Leadis is committed to making mobile phones more efficient as they evolve to deliver not only voice data but many other multimedia features such as internet, digital photo stills and videos, GPS, as well as cell phone gaming," said Adolfo Garcia, Senior Director of LED Drivers at Leadis Technology. "As these portable applications continue to proliferate, optimizing the LED driver's efficiency becomes essential. Leadis' LED drivers will continue to address and improve on the most important requirement in these mobile appliances: longer battery life."
Leadis' ultra low-voltage dropout PowerLite™ Current Regulator provides a typical transition threshold of only 50mV, allowing a device to stay in a charge-pump driver's highest-efficiency mode longer than competing products. Additionally, this patent-pending technique also solves one of the most significant problems associated with charge-pump based LED Drivers, namely the transition between the high-efficiency state (1x-mode) and the lower efficiency states. By lowering the drop out voltage of the driver to only 50mV, battery life can be extended by up to 20%.
About the LDS8869
The LDS8869 is a high-efficiency multi-mode fractional charge pump with ultra low dropout voltage that can drive up to six LEDs. The addition of a 1.33x fractional charge pump mode and ultra low dropout PowerLite™ Current Regulator increase the LDS8869's efficiency up to 95%. The 1.33x mode requires no additional external capacitors. Its EN/SET logic input functions as a chip enabler and LED current control.
Maximum LED current is 32mA and can be programmed from 0.5mA to 32mA in 0.5mA increments. The multi-fractional charge pump supports a wide range of input voltages from 2.7V to 5.5V. The device is available in a 16-lead TQFN 3mm x 3mm package with a maximum height of 0.8mm.
About the LDS8868
The LDS8868 is a high-efficiency multi-mode fractional charge pump with ultra low dropout voltage that can drive up to six LEDs. The addition of an ultra low dropout PowerLite™ Current Regulator increases the LDS8868's efficiency up to 93%. Its EN/SET logic input functions as a chip enabler and LED current control.
Maximum LED current is 32mA and can be programmed from 0.5mA to 32mA in 0.5mA increments. The multi-fractional charge pump supports a wide range of input voltages from 2.7V to 5.5V. The device is available in a 16-lead TQFN 3mm x 3mm package with a maximum height of 0.8mm.
About the LDS8867
The LDS8867 is a multi-mode fractional charge pump with low dropout voltage that can drive up to six LEDs with up to 90% efficiency. Its EN/SET logic input functions as a chip enabler and LED current control. Maximum LED current is 32mA and can be programmed from 0.5mA to 32mA in 0.5mA increments. The multi-fractional charge pump supports a wide range of input voltages from 2.7V to 5.5V. The device is available in a 16-lead TQFN 3mm x 3mm package with a maximum height of 0.8mm.
For more information, visit www.leadis.com.
About Leadis Technology, Inc.
Leadis Technology, Inc., headquartered in Sunnyvale, California, designs, develops and markets analog and mixed-signal semiconductors that enable and enhance the features and capabilities of mobile and consumer electronics devices. Leadis' product offerings include color display drivers, which are critical components of displays used in mobile consumer electronic devices; LED drivers, which provide controlled levels of current required to drive light emitting diodes in diverse applications including mobile backlight units; and audio CODEC and FM transmitter ICs, which are integral components in mobile media players and their associated aftermarket accessories. Leadis currently supplies display drivers supporting the major small panel display technologies, including a-Si and LTPS TFT LCDs, color STN LCDs, and color OLED displays, LED drivers supporting mobile backlighting applications, and audio ICs supporting portable media players and aftermarket audio accessories.
Certain statements in this press release including, but not limited to, statements as to the anticipated features, capabilities, benefits, potential market size, intended uses and performance of Leadis' new LED Driver ICs, are forward-looking statements that are subject to risks and uncertainties that could cause results to be materially different than expectations. Such risks and uncertainties include, but are not limited to, delays in ramping new products into production, lack of market acceptance of our new products, risks associated with the company's efforts to expand its business beyond LCD display drivers, including the new LED drivers, delays in the integration of our ICs into consumer electronic devices, our reliance on third-party manufacturers, general mobile handset and semiconductor industry trends, and other risks detailed from time to time in Leadis' reports filed with the Securities and Exchange Commission including its Form 10-K for the year ended December 31, 2006 and its Form 10-Q for the quarter ended September 30, 2007. Leadis disclaims any obligation to update these forward-looking statements.
Contact Information: Tracy Lam Director, World-Wide Marketing Communications Leadis International Ltd. Tel: 852-21528880