SOURCE: Leadis Technology, Inc.

May 13, 2008 11:35 ET

Leadis Technology Expands Its Flexible LDO Controller Family to Drive NMOS and NPN Pass Transistors

SUNNYVALE, CA--(Marketwire - May 13, 2008) - Leadis Technology, Inc. (NASDAQ: LDIS), an analog and mixed-signal semiconductor developer of color display drivers, power management ICs, LED drivers, and audio ICs for mobile consumer electronic devices, today announced sample availability of the LDS124P and LDS128P, a new family of Low Drop Out linear regulator (LDO) Controllers that are designed to drive NMOS or NPN pass transistors.

The LDS124P and LDS128P complement an existing LDO Controller, the LDS120P, and are targeted for applications including Graphic Cards, PC Motherboards, Switching Power Supply Post-Regulation, Telecom Equipment, and Consumer Applications such as LCD-TV. The LDS124P and LDS128P are designed to drive NMOS or NPN pass transistors to regulate output voltages from 1.24 V to 12 V. The LDS124P is a single-channel LDO controller, the LDS128 is a dual-channel LDO controller.

"Leadis is committed to increasing energy efficiency in all the applications we serve," said Paul Greenland, Senior Director of Power Management at Leadis Technology. "As IC loads become complex and sophisticated the number of power rails in a system or on a card increases. Load current scalable solutions reduce inventory costs, eliminating circuit blocks that are redundant in the power chain, increasing power density and reliability. We believe these adaptable point of load regulation solutions will become an industry standard in a diverse range of multi-rail applications."

About the LDS124

The LDS124 is a single-channel LDO controller designed to drive an NMOS or NPN pass transistor to regulate output voltages from 1.24 V to 12 V. At the heart of the LDS124 is a precision temperature compensated 1.24 V reference. Its drive pin is capable of 100 mA of sink current controlling up to 10A through a pass transistor. An NMOS pass transistor is preferred for load currents greater than 2.5A.

This combination, available in SOT-23 or TO-92 packages makes a very flexible regulator in terms of VOUT and IOUT, which can be implemented where space is at a premium.

About the LDS128

The LDS128 is a dual-channel LDO controller in a SOT-23-5 package. Designed to drive NMOS or NPN pass transistors, the LDS128 has two independent precision temperature compensated LDO controllers for setting two output voltages from 1.24 V to 12 V. Each drive pin is capable of sinking 20 mA, controlling two separate pass transistors. Ultra-low dropout operation is possible by taking the drive pin bias supply to a higher voltage than VIN, to the 12 V rail in a PCI-Express card for instance.

This combination makes two versatile voltage regulators in terms of VOUT and IOUT for applications with many auxiliary power rails.

About the LDS120

The LDS120 is a versatile LDO controller. The LDS120 permits the setting of VOUT at load currents up to 2 A with the minimum number of external components.

The open collector output is capable of driving an external PNP or PMOS pass transistor. A temperature compensated bandgap reference (1.25 V) controls the output voltage, which is programmable through an external potential divider.

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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 portable and consumer electronics devices. Leadis' product offerings include color display drivers, which are critical components of displays used in portable consumer electronic devices; LED drivers, which provide controlled levels of current required to drive light emitting diodes in diverse applications including mobile backlight units; power management ICs including LDOs, LDO controllers, shunt references, thermal switches, current regulators, and battery charger controllers; and audio CODEC and FM transmitter ICs, which are integral components in portable 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 portable 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 family of low drop out linear regulator controllers, 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 display drivers, including the new low drop out linear regulator controllers, 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, 2007 and its Form 10-Q for the quarter ended March 31, 2008. Leadis disclaims any obligation to update these forward-looking statements.

Contact Information

  • Contact Information:

    Tracy Lam
    Director, World-Wide Marketing Communications
    Leadis International Ltd.
    Tel: 852-21528880
    Valerie Beaudett
    George Cohen Communications, INC.
    Email: Email Contact
    Tel: 650.400.7833