LDO Regulator can sink and source 3.1 A peak current.
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Press Release Summary:
Model FAN1655 features Kelvin sensing, ensuring regulation of VTT to VDDQ/2 ±40 mV. Buffered VREF output capable of ±5 mA is provided for SSTL-2 interface devices. Voltage regulation is guaranteed to meet JEDEC specification for DDR memory interface levels. Device includes power-conserving shutdown control and protection of VTT output against overload and short circuit conditions by on-chip thermal limiting. Unit is specified from 0 to +125°C and comes in 14-lead SOIC packaging.
Original Press Release:
New LDO for DDR Bus Termination Handles 3.1A Peak Current, Expanding Fairchild's Solutions for DDR Memory Applications
San Jose, Calif.- October 23, 2002- Fairchild Semiconductor International (NYSE: FCS) has expanded its portfolio of DDR (double data rate) memory system power solutions with the introduction of the FAN1655, a new low-cost LDO (low drop-out) regulator that can sink and source 3.1A 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. This 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 0ºC to +125ºC temperature range and is guaranteed to be functional from a -40ºC to +125ºC 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 continuous current. The part is supplied in either tube or tape-and-reel packing.
The FAN1655 is the newest member of the Fairchild family of products for DDR memory, which offers the industry's widest choice of power and interface solutions created specifically for this fast-growing memory technology. Other products of note include Fairchild's FAN5236, a complete PWM solution for DDR power offering VDDQ, VTT and VREF outputs at over 90% efficiency, and the FAN6555, a compact PWM regulator with minimum parts-count that outputs VTT at up to +/- 3A peak. Fairchild is also a leading supplier of DDR module buffer devices including the SSTV16857 and SSTV16859.
Price: FAN1655M (SOIC-14) US $0.54 each (10,000 pcs volume)
FAN1655MTF (ETSSOP-16) US $0.86 each (10,000 pcs volume)
Availability: Now
Delivery: 7-8 weeks ARO
For more information, contact Fairchild Semiconductor's Customer Support Center at (888) 522-5372, fax (972) 910-8036, or visit Fairchild's website at www.fairchildsemi.com.
A PDF of the datasheet is available at http://fairchildsemi.com/pf/FA/FAN1655.html.
Fairchild Semiconductor International:
Fairchild Semiconductor International (NYSE: FCS) is a leading global supplier of high performance products for multiple end markets. With a focus on developing leading edge power and interface solutions to enable the electronics of today and tomorrow, Fairchild's components are used in computing, communications, consumer, industrial and automotive applications. Fairchild's 10,000 employees design, manufacture and market power, analog & mixed signal, interface, logic, and optoelectronics products from its headquarters in South Portland, Maine, USA and numerous locations around the world. Please contact us on the web at www.fairchildsemi.com.
