Semtech Announces Power Management Chipset for Next-Generation Mobile Intel Pentium III Microprocessors.Business Editors and High-Tech Writers NEWBURY PARK, Calif.--(BUSINESS WIRE)--Jan. 3, 2001 Advanced CPU CPU in full central processing unit Principal component of a digital computer, composed of a control unit, an instruction-decoding unit, and an arithmetic-logic unit. Regulator Increases Notebook Battery Life While Reducing Bill-of-Material Costs Semtech Corp. (Nasdaq:SMTC SMTC Southern Maine Technical College SMTC Science/Mathematics/Technology Center (Central Michigan University) SMTC Saluda Mountain Telephone Company (Knoxville, Tennessee) SMTC Short-To-Medium Term Control ), a leading supplier of mixed-signal semiconductors for communications, computers and industrial equipment, today announced the availability of the SC1471 PowerStep II(TM), their latest power-supply controller designed specifically for high-performance mobile Pentium See Pentium M. (R) III processor-based notebook applications. Combined with the SC1405C SmartDriver(TM), the SC1471 provides a core voltage over the 0.600V to 1.75V range at processor currents up to 25 amps. Like its predecessor the SC1406G, the SC1471 is a high-performance hysteretic hys·ter·e·sis n. pl. hys·ter·e·ses The lagging of an effect behind its cause, as when the change in magnetism of a body lags behind changes in the magnetic field. mode controller that provides high efficiency over a wide operating range. Use of hysteretic control eliminates the error amplifier found in traditional PWM (Pulse Width Modulation) A modulation technique that generates variable-width pulses to represent the amplitude of an analog input signal. Like its fixed-width pulse density modulation (PDM) cousin, the output switching transistor is on more of the time for a controllers, resulting in the fastest possible transient response In electrical engineering and Mechanical Engineering, a transient response or natural response is the response of a system to a change from equilibrium. Specifically, transient response in Mechanical Engineering is the portion of the response that approaches zero after a . This approach also avoids the stability issues inherent to PWM controllers, allowing the SC1471 to operate with very low levels of output cap Equivalent Series Resistance (ESR ESR - Eric S. Raymond ). The SC1471 is designed specifically for mobile Pentium(R) III processors featuring Intel SpeedStep(TM) technology, supporting on-the-fly core voltage changes to provide maximum battery life. The SC1471 meets all of the rigorous timing requirements for transitions between core voltages required for Intel SpeedStep(TM) technology related operation. The SC1471 also supports enhanced Intel Mobile Voltage Positioning (IMVP IMVP Intel Mobile Voltage Positioning IMVP International Motor Vehicle Programme ), which reduces power consumption by decreasing the core voltage as the load current increases. This feature is particularly important, not only for increasing battery life, but also for reducing system design costs by reducing the maximum thermal envelope. IMVP provides a significant advantage over passive droop schemes by dramatically reducing the size of the droop resistor and associated heat (and efficiency) losses while maintaining the high accuracy required by the latest Intel mobile processors. IMVP also provides an important benefit by increasing the amount of headroom available to accommodate load transients, and thus reducing the amount of required bulk output capacitance. All of the IMVP requirements are met on-chip, without the need for additional external circuitry. "The SC1471 signals Semtech's aggressive commitment to meeting the challenges posed by the latest notebook PC designs," said Eddie Yeow, director of portable power management products for Semtech Corp. "Taking steps to reduce power consumption and heat dissipation Noun 1. heat dissipation - dissipation of heat chilling, cooling, temperature reduction - the process of becoming cooler; a falling temperature has become increasingly important as processor currents increase and notebook form factors decrease." Other features of the SC1471 include over-current protection, under-voltage lockout lockout, intentional closing up of a company, factory, or shop by an employer to prevent employees from working during a strike or labor dispute. The term lockout and programmable soft-start. The power good output signal is blanked (remains active) during Intel SpeedStep(TM) technology related changes. An enable control is provided, with quiescent quiescent at rest; latent; the G0 stage of the cell cycle. current in shutdown consuming less than 10uA. The SC1405C High Speed Dual MOSFET (Metal Oxide Semiconductor Field Effect Transistor) The most popular and widely used type of field effect transistor (see FET). MOSFETs are either NMOS (n-channel) or PMOS (p-channel) transistors, which are fabricated as individually packaged Driver provides superior drive characteristics for powering the next generation of high-current mobile designs. The SC1405C is capable of driving a 3000pF load with 15nS rise and fall times, thus minimizing switching losses. System efficiency is also enhanced through its ability to drive multiple parallel MOSFETs, thereby reducing conduction losses and associated heat. Other features of the SC1405C include adaptive/programmable shoot-through protection; adaptive over-voltage protection; over-temperature protection; under-voltage lockout; and a power good output signal. The SC1405C also provides an enable control, with current consumption less than 10uA under shutdown. Pricing and Availability Production-quality SC1405C devices are available now through Semtech's network of direct sales representatives and distributors. Evaluation samples of the SC1471 are available now, with full production scheduled this month. The SC1471 comes in a TSSOP-24 package, while the SC1405C is available in a TSSOP-14 package. Semtech's Family of Products for Notebook and Wireless Applications Semtech offers a full line of power management solutions for portable applications, including switching regulators, ultra-low dropout (1) On magnetic media, a bit that has lost its strength due to a surface defect or recording malfunction. If the bit is in an audio or video file, it might be detected by the error correction circuitry and either corrected or not, but if not, it is often not noticed by the human (ULDO) linear regulators and charge pumps. Typical features include small package size, low supply current and low power shutdown control, making them ideal for portable, battery-powered applications. About Semtech Semtech Corp. is a leading supplier of power management, transient protection, HID and system management, high-performance and advanced communications semiconductor products for portable and high-speed communications applications. Publicly traded since 1967, Semtech is listed on the NASDAQ National Market under the symbol SMTC. A comprehensive listing of Semtech's many employment opportunities may be found at www.semtech.com. For more information, contact Semtech Corp. at 652 Mitchell Rd., Newbury Park, Calif. 91320; phone: 805/498-2111; e-mail to: info@semtech.com. |
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