AP1280AMP

Advanced Power Electronics Corp. AP1280AMP 2A SINK/SOURCE BUS TERMINATION REGULATOR FEATURES Ideal for DDR-I, DDR-II and DDR-III VTT Applications Sink and Source up to 2Amp 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 Built-in Soft-start Function Shutdown for Suspend to RAM (STR) Functionality with High-Impedance Output Current Limiting Protection On-Chip Thermal Protection Available in ESOP-8 (Exposed Pad) Packages VIN and VCNTL Under Voltage Protection RoHS Compliant and Halogen Free APPLICATION 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 TYPICAL APPLICATION . DESCRIPTIOON The AP1280AMP 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 volt...