Integrated Linear DDR
Termination Regulator
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 V
TT
while maintaining excellent load regulation.
V
TT
is designed to track the V
REF
voltage with a tight
tolerance over the entire current range while preventing
shoot through on the output stage.
A V
SENSE
pin is incorporated to provide excellent load
regulation, along with a buffered reference voltage.
The SC2595 incorporates a disable function built into
the AV
CC
pin to tri-state the output during Suspend To
Ram (STR) states.
(Multiple patents pending.)
SC2595
Features
Regulates while sourcing or sinking 1.5A
AV
CC
range is from 2.5V to 5V
Reference output
Minimum number of external components
Accurate internal voltage divider
SOIC-8L EDP package. Also available in Lead-free
package, fully WEEE and RoHS compliant
Applications
DDR memory termination
High speed data line termination
PC motherboards
Graphics boards
Disk drives
CD-ROM drives
Typical Application Circuit
VDD
SC2595
1
2
3
VREF
4
NC
GND
VSENSE
VREF
VTT
PVCC
AVCC
VDDQ
8
7
6
5
VTT
Revision: June 12, 2007
1
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