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參數(shù)資料
| 型號： | G2992F1U |
| 廠商： | Global Mixed-mode Technology Inc. |
| 英文描述： | 3A DDR Bus Termination Regulator |
| 中文描述： | 第3A DDR總線終端穩(wěn)壓器 |
| 文件頁數(shù)： | 1/1頁 |
| 文件大?。?/td> | 83K |
| 代理商： | G2992F1U |
Ver: 0.3 Preliminary
Sep 13, 2005
TEL: 886-3-5788833
http://www.gmt.com.tw
1
G2992
Global Mixed-mode Technology Inc.
3A DDR Bus Termination Regulator
Features
VCNTL Supply Voltage: 3.3V to 5.5V
Termination Supply Voltage: 1.8V to 3.6V
Support Both DDR I(1.25VTT) and DDR II (0.9
VTT) Requirements
Requires Only 20F 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 Termination Voltage
SSTL-18
SSTL-2
SSTL-3
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 -SDRAM. It contains a high-speed opera-
tional amplifier that provides excellent response to the
load transients. This device can deliver 3A continuous
current in the application such as required for DDR I/ II
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 750A @ VCNTL = 3.3V. So the power con-
sumption can meet the low power consumption appli-
cations. The G2992 also has a shutdown function by
setting 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 advan-
tage can be obtained in this mode through lowering
the quiescent current to 50μA @ VCNTL = 3.3V.
Ordering Information
ORDER
NUMBER
MARKING
TEMP.
RANGE
PACKAGE
(Pb free)
G2992F1U
G2992
-40°C to +85°C
SOP-8 (FD)
Note: U: Tape & Reel
(FD): Thermal Pad
Pin Configuration
Typical Application Circuit
C
OUT
R
DUMMY
R
TT
C
IN
C
CNTL
C
SS
R
2
R
1
VIN
VCNTL
VREF
GND
VOUT
EN
V
CNTL=3.3V
V
IN=2.5V
2N7002
VOUT
VREF
8
6
5
1
2
3
4
SOP-8(FD)
G2992
7
VIN
GND
NC
VCNTL
NC
C
OUT
R
DUMMY
R
TT
C
IN
C
CNTL
C
SS
R
2
R
1
VIN
VCNTL
VREF
GND
VOUT
EN
V
CNTL=3.3V
V
IN=2.5V
2N7002
VOUT
VREF
8
6
5
1
2
3
4
SOP-8(FD)
G2992
7
VIN
GND
NC
VCNTL
NC
相關PDF資料 |
PDF描述 |
|---|---|
| G2992 | 3A DDR Bus Termination Regulator |
| G2993P1X | DDR Termination Regulator |
| G2997F6U | DDR Termination Regulator |
| G2997P7U | DDR Termination Regulator |
| G2997 | DDR Termination Regulator |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| G2993 | 制造商:GMT 制造商全稱:Global Mixed-mode Technology Inc 功能描述:DDR Termination Regulator |
| G2993P1X | 制造商:GMT 制造商全稱:Global Mixed-mode Technology Inc 功能描述:DDR Termination Regulator |
| G2995 | 制造商:GMT 制造商全稱:Global Mixed-mode Technology Inc 功能描述:DDR Termination Regulator |
| G2995F1U | 制造商:GMT 制造商全稱:Global Mixed-mode Technology Inc 功能描述:DDR Termination Regulator |
| G2995F1UF | 制造商:GMT 制造商全稱:Global Mixed-mode Technology Inc 功能描述:DDR Termination Regulator |
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