AP1270 Datasheet PDF | Advanced Power Electronics

Advanced Power Electronics AP1270

The AP1270 is a simple, cost-effective and highspeed 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. The regulator is capable of actively sinking or sourcing up to 3A while regulating an output voltage to within 40mV. The output termination voltage cab be tightly regulated to track 1/2V DDQ by two external voltage divider resistors or the desired output voltage can be pro-grammed by externally forcing the REFEN pin voltage.

Part No.	AP1270
Datasheet	AP1270 Download
Manufacturer	Advanced Power Electronics
Description	3A SINK/SOURCE BUS TERMINATION REGULATOR
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FEATURES

Ideal for DDR-I, DDR-II and DDR-III VTT

APPLICATIONS

Sink and Source 3A 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 TO-252-5L & ESOP-8 Packages VIN and VCNTL No Power Sequence Issue RoHS Compliant and 100% Lead (Pb)-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 DESCRIPTIOON devices requirements. The AP1270 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.