TJ2995

DDR Termination Regulator FEATURES z z z z z z z z Low Output Voltage Offset Works with +5V, +3.3V, and 2.5V Rails Source and Sink Current Low External Component Count No External Resistors Required Linear Topology Available in SOP8, SOP8-PP Package Low Cost and Easy to Use SOP8 / SOP8-PP PKG TJ2995 APPLICATION z DDR-I and DDR-II Termination Voltage z SSTL-2 and SSTL-3 Termination ORDERING INFORMATION Device (Marking) TJ2995D TJ2995DP Package SOP8 SOP8-PP DESCRIPSION The TJ2995 linear regulator is designed to meet the JEDEC SSTL-2 and SSTL-3 specifications for termination of DDR-SDRAM. The device contains a high-speed operational amplifier to provide excellent response to load transient. This device can deliver 1.5A continuous current and transient peaks up to 3A in the application as required for DDR-SDRAM termination. With an independent VSENSE pin, the TJ2995 can provide superior load regulation. The TJ2995 provides a VREF output as the reference for the chipset and DDR DIMMS. The TJ2995 can easily provide the accurate VTT and VREF voltages without external resistors that PCB areas can be reduced. The quiescent current is low to meet the low power consumption applications. Absolute Maximum Ratings CHARACTERISTIC Supply Voltage to GND Lead Temperature (Soldering, 10 sec) Storage Temperature Range Operating Junction Temperature Range SYMBOL PVIN AVIN VDDQ TSOL TSTG TJOPR MIN. -0.3 -0.3 -0.3 -65 -40 MAX. 6.0 6.0 6.0 260 150 125 UNIT V ℃ ℃ ℃ Recommended Operation Ran...