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Technology Stocks : Semtech (Nasdaq:SMTC) -- Ignore unavailable to you. Want to Upgrade?

To: Si_Detective who wrote (1148)	8/28/2000 4:41:46 PM
From: The Ox	Respond to of 1225

Semtech SC1401 Saves Space and Cost by Integrating Two Power Supply Controllers; For Notebook PCs and Other Space-Critical Portable Applications NEWBURY PARK, Calif.--(BUSINESS WIRE)--Aug. 28, 2000--Semtech Corp. (Nasdaq: SMTC), a leading supplier of mixed-signal semiconductors for computers, communications, industrial, and automated test equipment, today announced availability of the SC1401 Power Supply Controller. The SC1401 integrates a high efficiency switching controller and a linear regulator controller into a single device. The SC1401 is designed to operate from a 6V to 30V input supply, making it ideal for notebook computer operation from either the battery or AC adapter. The on-board high-efficiency (greater than 90%) PWM synchronous power supply controller can be preset to generate 1.25V, or it can be adjusted with a simple resistor divider to provide any voltage between 1.25V and 5.5V. Integrated drivers deliver up to 2A of gate drive current, supporting use of the latest high-speed MOSFETs. N-channel devices can be used for both the top and bottom MOSFET, resulting in lower cost and improved efficiency. The SC1401 also contains a linear regulator controller capable of driving a low-cost N-channel MOSFET, with the output adjustable between 1.25V and 5.5V at up to 1A of current. The SC1401 offers fixed frequency operation at either 200kHz or 300kHz, with 200kHz offering the best efficiency, while 300kHz operation offers the lowest ripple, fastest transient response and/or smallest inductor and output capacitor size. The SC1401 can also be synchronized to an external clock at frequencies up to 350kHz. The SC1401 incorporates several features designed to extend battery life in portable applications. Separate enable controls for the switching and linear controllers are provided, with supply current dropping to less than 10 micro-amps with both controllers off. The switching controller automatically enters a (selectable) power-save mode under light load conditions, effectively reducing the switching frequency and associated switching losses. The SC1401 provides an active-low reset output signal for controlling a microprocessor or DSP. Other features include built in digital soft-start circuitry to minimize inrush surge currents, tight regulation over line, load and temperature; over-current, over-voltage and over-temperature protection; and under-voltage lockout. The SC1401 is rated for the industrial temperature range (-40 Degrees C to +85 Degrees C), ensuring reliable operation in the most rugged environments. Pricing and Availability The SC1401 in SSOP-20 packaging is available through Semtech's network of direct sales representatives and distributors, and is priced at $2.75 in 1,000 unit quantities. Semtech's Family of Products for Notebook and Wireless Applications Semtech offers a full line of power management solutions for notebook and wireless applications, including switching regulators, ultra low dropout (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, 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. For more information and a comprehensive listing of Semtech's many employment opportunities, contact Semtech Corp. at 652 Mitchell Road, Newbury Park, CA. 91320; phone 805/498-2111; email to info@semtech.com; or visit the company online at www.semtech.com. --30--tjj/la* mtb/la CONTACT: Semtech Corp., Newbury Park, Calif. Lori Posey, 805/480-2052 lposey@semtech.com