TJ2997 Datasheet, PDF (1/13 Pages) HTC Korea TAEJIN Technology Co. – DDR Termination Regulator

DDR Termination Regulator
TJ2997
FEATURES
z Source and sink current
z Low output voltage offset
z No external resistors required
z Linear topology
z Suspend to Ram (STR) functionality
z Low external component count
z Thermal Shutdown
z Available in SOP8, SOP8-PP Packages
APPLICATION
z DDR -II and -III Termination Voltage
z SSTL Termination
z HSTL Termination
SOP8 / SOP8-PP PKG
ORDERING INFORMATION
Device
TJ2997GD
TJ2997GDP
Package
SOP8
SOP8-PP
DESCRIPSION
The TJ2997 linear regulator is designed to meet the JEDEC SSTL specifications for termination of DDR-
SDRAM. The device contains a high-speed operational amplifier to provide excellent response to load
transients. The output stage prevents shoot through while delivering up to 1.5A continuous current and
transient peaks up to 3A with respect to PVIN operating condition in the application as required for DDR-
SDRAM termination. The TJ2997 also incorporates a V_SENSE pin to provide superior load regulation and a
V_REF output as a reference for the chipset and DIMMs. An additional feature found on the TJ2997 is an
active high enable (EN) pin that provides Suspend To RAM (STR) functionality. When EN is pulled low the
V_TT output will tri-state providing a high impedance output, but, V_REF will remain active. A power savings
advantage can be obtained in this mode through lower quiescent current.
Absolute Maximum Ratings
CHARACTERISTIC
Supply Voltage to GND
Lead Temperature (Soldering, 10 sec)
Storage Temperature Range
Operating Junction Temperature Range
SYMBOL
PV_IN
AV_IN
V_DDQ
T_SOL
T_STG
T_JOPR
MIN.
-0.3
-0.3
-0.3
-65
-40
MAX.
6.0
6.0
6.0
260
150
125
UNIT
V
℃
℃
℃
Recommended Operation Range
CHARACTERISTIC
AV_IN to GND
PV_IN & EN to GND
SYMBOL
AV_IN
PV_IN & EN
MIN.
2.3
0
MAX.
5.5
AV_IN
UNIT
V
V
Ordering Information
Package
SOP8
SOP8-PP
Order No.
TJ2997GD
TJ2997GDP
Description
DDR Termination Regulator
DDR Termination Regulator
Package Marking
TJ2997G
TJ2997G
Supplied As
Reel
Reel
Apr, 2011 - R1.0.1
1/13
HTC