Semtech Announces Two Core-Voltage Controllers for Mobile Intel Pentium 4 Processor DesignsNew controllers provide dual phase and single phase operation with support for Intel standards; integrated drivers extend board space savings Camarillo, California - August 12, 2004 Semtech Corp. (NASDAQ: SMTC), a leading supplier of analog and mixed-signal semiconductors for communications, portable devices, computers, and industrial equipment, today announced availability of the SC450 and SC451 power supply controllers for use in notebook PCs based on the latest Intel® Pentium® M processors.
Both the SC450, dual-phase hysteretic pulse-width modulating (PWM) Vcore controller, and the SC451, single-phase Vcore controller, integrate MOSFET drivers on-chip. This integration saves critical board space needed by today’s smaller form factors. Both devices support Intel’s requirement for a maximum amount of time allowed for the device to go from the “deeper sleep” mode (C4E) to low-frequency mode (LFM). The 6-bit DAC on both devices is slew rate limited to minimize transient currents and audible noise. Another advantage of the SC450 and SC451 is backward compatibility with the widely used Semtech SC1476 and SC1479, dual phase and single phase IMVP-IV controllers. Both new devices continue to incorporate an automatic power save mode where the controllers detect reverse current through the inductor (under light load conditions) shutting off the low-side FET to preserve battery life. “Semtech continues to expand its core voltage regulator offerings to support our customers as they adopt new technology. For customers designing systems at 25 amps or below, using a single phase solution may be the best and most space saving option. For customers designing for more current, a dual phase solution is required,” said Eddie Yeow, Vice President of Semtech’s Portable Products Group. “The availability of the pin-compatible upgrades from our SC1476 and SC1479 makes it easy for customers who design and sell multiple platforms to upgrade their controllers as they adopt Intel’s latest technology and their specifications change.” Key Features of the SC450 and SC451
Pricing and AvailabilityThe SC450, ordering code SC450ITSTRT, and SC451, ordering code SC451ITS38TRT, are available now in production quantities and are priced in 1,000-piece quantities at $3.86 and $2.85, respectively, for the lead-free TSSOP-38 package. The SC451 also comes in a 28-lead TSSOP lead-free package, ordering code SC451ITSTRT, priced in 1,000-piece quantities at $2.50. Volume pricing and delivery quotes, as well as evaluation kits and samples, are available by contacting Semtech’s sales representatives and distributors or by contacting salesinfo@semtech.com. Product datasheets are posted at www.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 |
Both devices comply with Intel mobile PC standards aimed at extending battery life, including Intel’s Mobile Voltage Positioning (IMVP-IV™ and IMVP-IV+™) requirements, which increase battery life by reducing the voltage at the processor when it is heavily loaded. Both controllers also support processor speed scaling built into Intel’s SpeedStep® processors. The SC450 controller operates from either 3.3V or 5V; the SC451 device operates from 5V.
