SUNNYVALE, Calif., May 2 /PRNewswire/ -- Leadis Technology, Inc.
(Nasdaq: LDIS), an analog and mixed-signal semiconductor developer of color
display drivers, LED drivers, and audio ICs for mobile consumer electronic
devices, today announced sample availability of the LDS8861, the first in a
new family of charge pump based LED drivers featuring a highly efficient
1.33x-mode enabled charge pump. Targeted at mobile backlighting
applications, the new LED driver supports up to six LEDs at a maximum
current of 32mA each, enabling support for a wide range of LED and
brightness options for small and medium sized LCD module applications.
As the battery voltage of a mobile device decreases during operation,
it becomes necessary for charge pump based LED drivers to switch to the
next higher pump mode available to assure continued driving of the LED.
Pumped voltage in excess of the required LED forward drive voltage results
in lower efficiency and excess power consumption.
In addition to the 1x/1.5x/2x charge pump modes traditionally offered,
the LDS8861 integrates an additional charge pump mode that generates an
output voltage equal to 1.33 times the input voltage. Leadis' 1.33x pump
mode serves as a higher-efficiency intermediate mode between the 1x and
1.5x modes, resulting in efficiency improvements up to 10% over traditional
offerings. The six LED channels are configured as three pairs of two
matched channels, with each pair independently programmable from 0.25mA to
32mA through the provided one-wire interface which reduces pin count
compared to PWM-based solutions. Compatible with input voltages ranging
from 2.3V to 5.5V, the LDS8861 provides up to 92% efficiency with no added
external capacitors compared to conventional 1.5x charge pumps.
"We're pleased to introduce the first member of our new, 1.33x-mode
enabled, charge pump LED driver family. We are very excited with this
1.33x-mode technology that we have licensed from Catalyst Semiconductor. We
believe that it will be widely accepted in the market as it dramatically
enhances the efficiency of the driver," said Donato Montanari, Vice
President and General Manager of LED Drivers at Leadis Technology. "The
higher efficiencies possible with our 1.33x technology provide customers
with an additional means to increase battery life for their mobile
offerings, enabling product differentiation and an enhanced consumer
experience."
About the LDS8861
The LDS8861 is a high-efficiency 1x/1.33x/1.5x/2x fractional charge
pump capable of driving up to six LEDs at up to 32mA each. LED dimming
control is programmable with a one-wire interface enabling current level
adjustment from 0.25mA to 32mA. LED channel matching is supported within
+/-1%, with current accuracy at +/-3%.
Input voltages from 2.3v to 5.5v are supported with efficiency up to
92%. Operation at switching frequencies of 1.1MHz (1.5x mode) and 800kHz
(1.33x and 2x modes) enables low noise input ripple and utilization of
small external ceramic capacitors. Other product features include soft
start and current limiting, thermal shutdown and short circuit protection,
and a low current shutdown mode of 1uA max. The LDS8861 is offered in a
16-lead thin QFN 3mm x 3mm package with a maximum height of 0.8mm.
For more information, visit http://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 LCD's, color STN LCD's, 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 IC, 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 and 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. Leadis
disclaims any obligation to update these forward-looking statements.
(LDISG)
SOURCE Leadis Technology, Inc.
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Related links:
http://www.leadis.com/
CONTACT:
Eric S. Itakura, Director, Business
Development and Investor Relations of Leadis Technology, Inc.,
+1-408-331-8616
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