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Desktop PCs
Desktop PCs
Notebooks
and Workstations
Graphics Card Memory Termination
Set Top Boxes
Digital TVs
Printers
Embedded Systems
Active Termination Buses
DDR-I
DDR-II and DDR-III Memory Systems
Ideal for DDR-I
Ideal for DDR-I
DDR-II and DDR-III VTT Applications
Sink and Source 2A Continuous Current
Integrated Power MOSFETs
Generates Termination Voltage for SSTL_2
SSTL _18
HSTL
SCSI-2 and
SCSI-3 Interfaces
High Accuracy Output Voltage at Full-Load
Output Adjustment by Two External Resistors
Low External Component Count
Shutdown for Suspend to RAM (STR) Functionality with High-Impedance Output
Current Limiting Protection
On-Chip Thermal Protection
Available in SOP-8 (Exposed Pad) Packages
VIN and VCNTL No Power Sequence Issue
RoHS Compliant and 100% Lead (Pb)-Free
Cost-Effective, 2A Sink/Source Bus Termination Regulator
The RT9173C is a simple, cost-effective and high-speed linear regulator ,designed to generate termination voltage in double data rate (DDR) memory ,system to comply with the JEDEC SSTL_2 and SSTL_18 or other specific interfaces ,such as HSTL, SCSI-2 and SCSI-3 etc. devices requirements. The regulator is ,capable of actively sinking or sourcing up to 2A while regulating an output ,voltage to within 40mV. The output termination voltage cab be tightly regulated ,to track 1/2VDDQ by two external voltage divider resistors or the desired ,output voltage can be pro-grammed by externally forcing the REFEN pin voltage.,The RT9173C also incorporates a high-speed differential amplifier to provide ,ultra-fast response in line/load transient. Other features include extremely ,low initial offset voltage, excellent load regulation, current limiting in ,bi-directions and on-chip thermal shut-down protection.,The RT9173C are available in the SOP-8 (Exposed Pad) surface mount packages.,,
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