White LED driver from Monolithic Power drives up to 9 lamps

Date Announced: 16 Nov 2005

LOS GATOS, Calif. -- New from Monolithic Power Systems (MPS) (Nasdaq:MPWR - News) is the MP1528, a step-up converter designed to drive nine white LEDs in series at 20mA from a single cell Lithium Ion battery.

With a distinctive wide input voltage range of 2.7V to 36V, the MP1528 is suitable for portable applications such as PDA, cell phones and cameras, but is also useful for LCD backlight applications in home appliances and industrial systems. The integrated power switch ensures a maximum drive current of at least 20mA even under the most challenging input/output voltage conditions.

The MP1528 operates at high efficiency and regulates LED current via a fixed off-time switch control loop determined by a low 0.4V feedback threshold. LED brightness is easily adjusted by applying a DC voltage or a PWM signal to the driver. Additional features of the MP1528 include integrated soft-start, over-current, thermal and output over-voltage protection.

The MP1528 is available in a tiny 6 pin 3mm x 3mm QFN package and requires only 6 external components for a compact complete solution. Sample and evaluation boards are available for immediate delivery. Pricing starts at $1.15 in 1k piece quantities.

About Monolithic Power

Monolithic Power Systems, Inc. (MPS) develops and markets proprietary, advanced analog and mixed-signal semiconductors. The company's advanced process technology and highly experienced analog designers provide high-performance power management integrated circuits (ICs) for automotive, industrial, consumer, computing, and communications products. MPS partners with world-class foundries to deliver high-quality, cost-effective solutions to meet the demanding standards set by its customers. Founded in 1997 and headquartered in Los Gatos, CA, the company has expanded its global presence with sales offices in Taiwan, China, Korea, and Japan, which operate under MPS International, Ltd.

Contact
Monolithic Power Systems, Inc. Dave Okada, 408-357-6600

E-mail:dave.okada@monolithicpower.com

Web Site:http://www.monolithicpower.com

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