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SP2996B Datasheet(PDF) 1 Page - Exar Corporation |
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SP2996B Datasheet(HTML) 1 Page - Exar Corporation |
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1 / 9 page  S SP P2 29 99 96 6B B 2 2 A Am mp p D DD DR R B Bu us s T Te errm miin na attiio on n R Re eg gu ulla atto orr September 2010 Rev. 2.0.0 Exar Corporation www.exar.com 48720 Kato Road, Fremont CA 94538, USA Tel. +1 510 668-7000 – Fax. +1 510 668-7001 GENERAL DESCRIPTION The SP2996B voltage regulator is designed to convert voltage supplies ranging from 1.6V to 6V into a desired output voltage which is adjusted by an external resistor divider. The regulator is capable of sourcing or sinking up to 2A of Continuous current while regulating an output voltage to within 20mV. The SP2996B provides an excellent voltage source for active termination schemes of high speed transmission lines such as those seen in high speed memory buses and distributed backplane designs when used in conjunction with series termination resistors. The voltage output of the regulator can be used as a termination voltage for DDR SDRAM, and it meets the JEDEC SSTL-2 and SSTL-3 specifications. Current limits in both sourcing and sinking mode, plus on-chip thermal shutdown make the circuit tolerant of output fault conditions. APPLICATIONS • DDR Memory Termination • Active Bus Termination • Supply Splitter FEATURES • Capable of Sourcing and sinking 2A Continuous Current • Supports both DDR1 (1.25VTT) and DDR2 (0.9VTT) Requirements • Low Output Voltage Offset, ± 20mV • Thermal and Current Limit Protection • Integrated Power MOSFETs • Generates Termination for SSTL-2 • High Accuracy Output at Full Load • Adjustable VOUT by External Resistors • Minimal External Components • Available in 8-Pin NSOIC Package TYPICAL APPLICATION DIAGRAM Fig. 1: SP2996B Application Diagram |
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