Fairchild Semiconductor International (South Portland, ME) has expanded its portfolio of double data rate (DDR) memory system power solutions with the introduction of the FAN1655, a new low-cost, low-drop-out (LDO) regulator that can sink and source 3.1A of peak current. The FAN1655’s voltage regulation is guaranteed to meet the JEDEC specification for DDR memory interface levels for PCs, graphics cards, embedded computing systems, computer peripheral data buffers, and other DDR memory or bus termination applications.
The new LDO regulator features Kelvin
sensing, ensuring regulation of VTT to VDDQ/2 ±40mV for achieving the highest possible data bus bandwidth. Additionally, a buffered VREF output capable of ±5mA is provided for SSTL-2 interface devices.
Other important features of the FAN1655 include power-conserving shutdown
control and protection of the VTT output against overload and short-circuit
conditions by on-chip thermal limiting.
The FAN1655 is fully specified from
0 to +125 degrees C and is guaranteed to be functional from a -40 to +125 degrees C range. In addition to standard low-cost, 14-lead, SOIC packaging, the FAN1655 is available in a power-enhanced, 16-lead, exposed-pad, TSSOP package capable of delivering 3A of continuous current. The part is supplied in either tube or tape-and-reel packing.
Pricing for the FAN1655M is $0.54 each in 10,000-piece volumes. Pricing for the FAN1655MTF is $0.86 each in 10,000-piece volumes. Available now, delivery is in seven to eight weeks ARO.
