Semtech Debuts 1.8 Volt Input, 40 Amp Triple Output ControllerWith input voltages as low as 1.8V, the SC2441 controller generates output voltages down to 0.5V at 40A to power high current needs of telecom and networking subsystems Camarillo, California - January 10, 2005 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 SC2441, a very low input voltage, two-phase synchronous step-down controller with an integrated step-up converter. The device is capable of generating three output voltages to meet the multi-output power requirements in most telecommunications and networking systems.
“The SC2441 controller is a unique power controller for delivering the very low voltage, high current demands of the latest submicron ICs used in networking and telecom systems,” says Ven Shan, Director of Marketing for Semtech’s Networking and Industrial Power Management Group. “This independent and flexible controller has all of its drive circuits generated internally even at very low voltages, which makes it ideal for compact high current designs in high performance systems.” Among the products that would be well served by incorporating the SC2441 are low voltage distributed DC-to-DC converters for powering network processors and field programmable gate arrays (FPGAs), as well as power supplies for such equipment as servers, telecommunications base stations, xDSL cable modems, router switches and copiers. Other SC2441 features include individual, per-phase soft-start and overload timers; programmable fixed switching frequency up to 1 MHz; up to a 90 percent duty cycle, and an individual enable pin for controlling power sequencing of each phase. The device also incorporates Semtech’s patented Combi-Sense™ technique for providing lossless peak current mode control, eliminating the need for an external current sense resistor. Key Features of the SC2441
Pricing and AvailabilityThe SC2441 controller is available immediately in production quantities and is priced at $2.95 each in 1,000-piece lots. The device comes in a 28-pin, lead-free TSSOP package and is orderable by the part number SC2441ITSTRT. Semtech offers comprehensive design assistance, including field- and factory-based support. Requests for 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 dual-phase, step-down controller can be configured to supply two individually controlled and regulated 20A outputs, 180 degrees out-of-phase or, alternatively, the two phases can be interleaved into one low-ripple 40A output. Moreover, the SC2441’s integrated boost step-up switching regulator offers an additional output or can be used to generate a bias supply to drive the gates of MOSFETs at low input voltage conditions. As a result, no separate gate supply is required, lowering cost and space requirements while simplifying the design.
