NX1730 - NEXSEM

NX1730 3A SOURCE/SINK TERMINATION REGULATOR

NX1730 is a 3A source and sink Low Dropout Regulator n designed for DDRI and DDRII termination application. n Current limit circuitry in both sink and source side plus n internal thermal shutdown protects the device under short n circuit condition . NX1730 can be disabled by pulling n down the Reference Pin below 0.2V using external small n signal tra.

Features

Independent power sequencing Support DDR I (1.25V VTT) and DDRII (0.9V VTT) 3A Source and Sink current capability Shut down by pulling REFEN pin low Current Limit Thermal Shut down TO-252 package APPLICATIONS DDR Memory Termination Supply Desktop Motherboard or Notebook applications Graphic Card Set Top Box Active Terminal Bus Termination TYPICAL APPLICATION VCNTL +3.3V CCNTL 1uF VCNTL VIN CIN 100uF VIN +2.5V 2N7002 EN C1 0.1uF R1 100k NX1730 REFEN VOUT R2 100k GND Co 100uF VOUT +1.25V R3 1k Figure1 - Typical application of NX1730 Device NX1730CDTR NX1730CMTR Rev. 1.0 01/.