Semtech Offers SC1486A Power Supply Controller

Semtech Corp. (Camarillo, CA), a producer of analog and mixed-signal semiconductors, announced its SC1486A dual synchronous DDR and DDR2 buck power supply controller, which targets notebooks, tablet PCs and embedded applications. The SC1486A builds upon the Semtech SC1486 DDR power supply controller. The upgraded version provides a power supply solution for systems designers that are specifying DDR2 memory, or who want to design a migration path to DDR2 memory with minimal board changes.

The SC1486A offers a wide input-voltage range from 1.8 V to 25 V, enabling the device to directly interface with standard battery configurations and ac adapters. Also provided are two independently programmable output voltages that can be adjusted from 5.5 V to 0.5 V. To support DDR2, the first switching regulator can be used to generate 1.8 V for memory chip supply and the second switching regulator can be used to provide a 0.9 V floating reference to support the DDR2 active termination requirement. The device also provides a 1.25 V/3 mA buffered reference output. The SC1486A can also function as a general-purpose, dual switching regulator, eliminating costly pins.

The SC1486A is available now in production quantities, and is priced at $2.32 each in 1,000-piece lots.