Multi-Output Regulator supplies all chipset, DDR2/3 voltage.
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Press Release Summary:
Supplied in 7 x 7 mm QFN-48 package, PM6641 combines all supply-voltage and reference sources for multimedia chipset and DDR2/3 memory into one device. Integration of 3 programmable switching regulators, one 2 A LDO, and one low-noise reference maximizes power density in next-generation multimedia products. Compliant with Ultra-Mobile PCs specifications, solution offers 3 outputs independently adjustable from 0.8-2.5 V and switching frequency programmable from 500 kHz to 1 MHz.
Original Press Release:
Single-Chip Solution from STMicroelectronics Supplies All Chipset and DDR2/3 Voltages
Programmable multi-output regulator meets UMPC specifications to maximize power density in next-generation multimedia products
Geneva, April 30, 2008 - STMicroelectronics (NYSE: STM), a world leader in power applications, has combined all supply-voltage and reference sources for a multimedia chipset and DDR2/3 memory into a single device by introducing the PM6641 multi-output regulator. The regulator, housed in a 7 x 7mm QFN-48 package, saves cost and footprint by integrating three programmable switching regulators, a 2A-rated linear low dropout (LDO) and a low-noise reference, and also meets the latest industry specifications for Ultra-Mobile PCs (UMPC).
The three outputs are independently adjustable from 0.8V to 2.5V, enabling space savings in a variety of applications, including notebook and sub-notebook PCs, portable gaming terminals, set-top boxes, HDTVs and Personal Video Recorders (PVR). By satisfying power requirements for Double Data Rate 3 (DDR3) memory, the PM6641 will address new products using the latest high-speed memory standard.
Special features of the PM6641 save additional board space and cost, including out-of-phase switching of the three digital supplies to minimize input-capacitor requirements. The programmable switching frequency from 500kHz to 1MHz allows the use of small inductors, and the device is also optimized for low-cost multilayer ceramic capacitors at the output. In addition, power-saving operation at light loads extends battery life and allows designers to reduce stand-by power consumption.
Comprehensive protection features include thermal protection, separate power-good signals, latched over-voltage and under-voltage protection, and active soft-end for all outputs. With programmable current-limit and soft-start for all outputs also included, these embedded features ease design-in to multiple products using the reference design provided.
The PM6641 is in mass production now, priced at $3 in quantities of 1000 units.
About STMicroelectronics
STMicroelectronics is a global leader in developing and delivering semiconductor solutions across the spectrum of microelectronics applications. An unrivalled combination of silicon and system expertise, manufacturing strength, Intellectual Property (IP) portfolio and strategic partners positions the Company at the forefront of System-on-Chip (SoC) technology and its products play a key role in enabling today's convergence markets. The Company's shares are traded on the New York Stock Exchange, on Euronext Paris and on the Milan Stock Exchange. In 2007, the Company's net revenues were $10 billion. Further information on ST can be found at www.st.com.
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