POWER MANAGEMENT
Description
The SC2595 is an integrated linear DDR termination
device, which provides a complete solution for DDR
termination designs; while meeting the JEDEC require-
ments of SSTL-2 specifications for DDR-SDRAM termi-
nation.
The SC2595 can source and sink 1.5A current at the
output VTT while maintaining excellent load regulation.
VTT is designed to track the VREF voltage with a tight
tolerance over the entire current range while preventing
shoot through on the output stage.
A VSENSE pin is incorporated to provide excellent load
regulation, along with a buffered reference voltage.
SC2595
Integrated Linear DDR
Termination Regulator
Features
Regulates while sourcing or sinking 1.5A
AV range is from 2.5V to 5V
CC
Reference output
Minimum number of external components
Accurate internal voltage divider
SOIC8-EDP package.Pb-free,Halogen free, and RoHS/
WEEE compliant
Applications
DDR memory termination
High speed data line termination
PC motherboards
Graphics boards
Disk drives
CD-ROM drives
The SC2595 incorporates a disable function built into
the AVCC pin to tri-state the output during Suspend To
Ram (STR) states.
(Multiple patents pending.)
Typical Application Circuit
VDD
SC2595
1 NC
VTT 8
VTT
2 GND
PVCC 7
3
6
VSENSE AVCC
VREF
4 VREF
VDDQ 5
September 24, 2009
1
www.semtech.com