G2997/B 台湾致新代理商 GMT LDO系列 DDR终结器
DDR Termination Regulator

General Description
The  G2997  is  a  3A  sink/source  tracking  termination  regulator.   It   is   specifically   designed   for   low-cost/   low-external  component  count  systems.  The  G2997  maintains  a  high  speed  operational  amplifier  that  pro-vides  fast  load  transient  response  and  only  requires  20μF  (2×10μF)  of  ceramic  output  capacitance.  The  G2997 supports remote sensing functions and all fea-tures  required  to  power  the  DDR  I  /  DDR  II  /DDR  III  /DDR   IIIL   VTT   bus   termination   according   to   the   JEDEC  specification.  In  addition,  the  G2997  includes  integrated  sleep-state  controls  placing  VTT  in  High-Z  in  S3  (suspend  to  RAM)  and  soft-off  for  VTT  and  VTTREF in S5 (Shutdown). The G2997 is available in the thermally efficient 8pin, 10pin MSOP (Thermal Pad) & 10pin TDFN.

Features
„Support DDR I (1.25VTT), DDR II (0.9 VTT), DDR III (0.75 VTT), and DDR IIIL (0.675VTT) Requirements
„Input Voltage Range: 3V to 5.5V
„VLDOIN Voltage Range: 1.2V to 3.6V
„Requires Only 20μF Ceramic Output Capacitance
„Supports High-Z in S3 and Soft-Off in S5
„Integrated Divider Tracks 1/2 VDDQSNS for Both VTT and VTTREF „
Remote Sensing (VTTSNS)
„±20mV Accuracy for VTT and VTTREF
„10mA Buffered Reference (VTTREF) „
Built-In Soft-Start „
Over Current Protection
„Thermal Shutdown Protection „
MSOP-8  (FD)  ,  MSOP-10  (FD)  &  TDFN3X3-10  Package

Applications „
DDR I/II/III/IIIL Memory Termination
„SSTL−2, SSTL−18
„HSTL Termination

Ordering Information

Note:  F5:  MSOP-8(FD)      
F6:  MSOP-10(FD)      
RE:  TDF3X3-10            
1:  Bonding  Code  <only  MSOP-8 (FD), TDFN3X3-10>     
U: Tape & Reel

Pin Configuration

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