Semtech Announces Integrated Power Supply For DDR / DDR2 MemorySC486 reduces part count for systems using DDR/DDR2 memory by combining switching power regulator and linear source/sink regulator in a single device Camarillo, California - November 17, 2004 Semtech Corp. (NASDAQ: SMTC), a leading supplier of analog and mixed-signal semiconductors for communications, portable devices, computers, and industrial equipment, today announced the SC486, the company’s first switcher/linear combination regulator designed specifically for DDR and DDR2 memory applications.
“In today’s portable designs the need for high performance DDR memory goes hand-in-hand with the need for a small form factor, and with the SC486 we have a power supply the satisfies both of these parameters,” said Eddie Yeow, Vice President of Semtech’s Portable Products Group. “The device is a major step forward for these designs thanks to its small form factor and high integration but also because the performance we’ve built in ensures proper functioning of the memory.” The SC486 features an adaptive on-time switching regulator that provides a very accurate supply voltage (VDDQ) to the memory chip with fast DC-DC conversion response and >90% efficiency. The controller protects the memory from transient changes by monitoring the output voltage and adjusting the frequency to counter the change in load current. The device also features a power-save mode that reduces switching frequency in light load conditions for improved efficiency and lower power consumption. The low dropout (LDO) regulator creates the memory termination voltage (VTT) and has the capacity to source and sink up to 3 amps of peak current. The VTT output tracks an internally generated and buffered reference voltage that is half of VDDQ, providing for a highly accurate termination voltage and contributing to DDR memory reliability. The LDO is designed to operate with ceramic output capacitors for cost / board space savings over switching solutions. Key Features of the SC486
Pricing and AvailabilityThe SC486 is available immediately in production quantities and is priced at $1.32 each in 1,000-piece lots. The device comes in a 24-pin, lead-free MLPQ package and is orderable by the part number SC486IMLTRT. Semtech offers comprehensive design assistance, including field- and factory-based support. Data sheets, volume pricing, and delivery quotes, as well as evaluation kits and samples, are available by contacting salesinfo@semtech.com. About SemtechSemtech Corporation is a leading supplier of high-quality analog and mixed-signal semiconductor products. The company is dedicated to providing customers with proprietary solutions and breakthrough technology in power management, protection, advanced communications, human interface, and test & measurement products. Publicly traded since 1967, Semtech is listed on the NASDAQ National Market under the symbol SMTC. For more information, contact Semtech Corp. at 200 Flynn Road, Camarillo, CA 93012-8790; phone (805) 498-2111; email to info@semtech.com; or visit its web site at www.semtech.com. Press ContactTerry Sears, Marketing Communications Manager, Telephone: 805.498.2111 |
The SC486 integrates a switching regulator for the supply voltage, a linear regulator for the memory termination voltage, and an internal buffered voltage reference into a single device targeted at next-generation notebook computers, PDAs, power supplies and other portable systems. The SC486 comes in one of the smallest form-factors on the market, a 4mm x 4mm MLPQ package, and further reduces board space requirements through the integration of otherwise external circuitry for DDR memories, such as resistor dividers and sense resistors.
