G2992 台湾致新代理商 GMT LDO系列 DDR终结器

General Description
The G2992 is a linear regulator designed to meet the JEDEC SSTL-18, SSTL-2 and SSTL-3 (Series Stub Termination Logic) specifications for termination of DDR I/II/III/IIIL -SDRAM. It contains a high-speed operational amplifier that provides excellent response to the load transients. This device can deliver 3A continuous cur-rent in the application such as required for DDR I/II/III /IIIL SDRAM termination. The G2992 can easily provide the accurate VTT voltage with two external resistors generating reference voltage. The quiescent current is as low as 750μA @ VCNTL= 3.3V. So the power con-sumption can meet the low power consumption applica-tions. The G2992 also has a shutdown function by set-ting VREF smaller than 0.2V, that provides Suspend to RAM (STR) functionality. When in the shutdown mode, the VTT output (on VOUT pin) will be tri-state providing a high impendence. A power saving advantage can be obtained in this mode through lowering the quiescent current to 50μA @ VCNTL= 3.3V.

Features
VCNTL Supply Voltage: 3.3V to 5.5V
Termination Supply Voltage: 1.2V to 3.6V
Support DDR I(1.25VTT), DDR II (0.9 VTT), DDR III (0.75VTT), and DDR IIIL (0.675VTT)
Requirements Requires Only 20μF Ceramic Output Capacitor
Low Output Offset
3A Source and Sink Current
Low External Component Count
No Inductor Required
Thermal Shutdown Protection
Over Current Protection
Suspend to RAM (STR) Function with High-impedance output
SOP-8 (FD) Package

Applications
DDR-SDRAM Termination Voltage
DDR I / DDR II / DDR III / DDR IIIL Termination Voltage
SSTL-18
SSTL-2
SSTL-3

Ordering Information

Note: F1: SOP-8 (FD) U: Tape & Reel