SC2595EVB SEMTECH [Semtech Corporation], SC2595EVB Datasheet

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SC2595EVB

Manufacturer Part Number
SC2595EVB
Description
Integrated Linear DDR Termination Regulator
Manufacturer
SEMTECH [Semtech Corporation]
Datasheet
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
V
tolerance over the entire current range while preventing
shoot through on the output stage.
A V
regulation, along with a buffered reference voltage.
The SC2595 incorporates a disable function built into
the AV
Ram (STR) states.
(Multiple patents pending.)
Revision: June 12, 2007
POWER MANAGEMENT
Typical Application Circuit
Description
TT
SENSE
is designed to track the V
CC
pin is incorporated to provide excellent load
TT
pin to tri-state the output during Suspend To
while maintaining excellent load regulation.
VREF
VDD
REF
voltage with a tight
1
2
3
4
NC
GND
VSENSE
VREF
SC2595
1
Features
Applications
VDDQ
PVCC
AVCC
VTT
Regulates while sourcing or sinking 1.5A
AV
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
DDR memory termination
High speed data line termination
PC motherboards
Graphics boards
Disk drives
CD-ROM drives
CC
range is from 2.5V to 5V
8
7
6
5
Integrated Linear DDR
Termination Regulator
www.semtech.com
SC2595
VTT

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SC2595EVB Summary of contents

Page 1

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 ...

Page 2

POWER MANAGEMENT Absolute Maximum Ratings Exceeding the specifications below may result in permanent damage to the device, or device malfunction. Operation outside of the parameters specified in the Electrical Characteristics section is not implied ...

Page 3

... EDP) © 2007 Semtech Corp. Ordering Information Par t Number Package SC2595STRT SOIC-8L EDP (1)(2) SC2595EVB Evaluation Board Notes: (1) Only available in tape and reel packaging. A reel contains 2500 devices for SOIC-8L package. (2) Lead free package. Device is fully WEEE and RoHS compliant. 3 SC2595 Temp ...

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POWER MANAGEMENT Pin Descriptions ...

Page 5

POWER MANAGEMENT Notes: Notes: Notes: Notes: Notes: (1) Can be used for vias. (2) Power and V supplies DDQ (a) The preferred mode of operation is when the AV (b) If and when ...

Page 6

POWER MANAGEMENT Application Information Overview Overview Overview Overview Overview Double Data Rate (DDR) SDRAM was defined by JEDEC 1997. Its clock speed is the same as previous SDRAM but data transfers speed is twice than previous SDRAM. By now, the ...

Page 7

POWER MANAGEMENT Application Information (Cont.) Layout guidelines Layout guidelines Layout guidelines Layout guidelines Layout guidelines 1)The SC2595 has a power SO-8 package. It can im- prove the thermal impedance ( θ ) significantly. A suitable JC thermal pad should be ...

Page 8

POWER MANAGEMENT Test Waveforms Test condition: Avcc=PVcc=VDDQ=2.5V,VTT=1.25V Cout1=220uF, Cout2=10uF, Source 2A. Figure 3 Typical Characteristics AVCC=VDDQ=2.5V 3.00 2.75 2.50 2.25 2.00 1.75 1.50 1.25 1.00 1.8 1.9 2 2.1 2.2 2.3 2.4 2.5 PVCC(V) Figure 5 © 2007 Semtech Corp. ...

Page 9

POWER MANAGEMENT Typical Characteristics (Cont.) Quiescent Current(AVCC= 2.5V) 800 700 600 500 400 300 200 100 120 140 Temperature ( ℃ ) Figure 7 VDDQ=PVCC=AVCC=2.5V 1.250 1.245 1.240 1.235 1.230 1.225 1.220 1.215 1.210 0 ...

Page 10

POWER MANAGEMENT Typical Characteristics (Cont.) VDDQ=2.5V 6.5 6.0 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 AVCC=PVCC(V) Figure 11 AVCC=PVCC=VDDQ=2.5V 140 120 100 0.0 0.5 1.0 1.5 ...

Page 11

POWER MANAGEMENT Outline Drawing - Power SOIC-8L EXPOSED PAD NOTES Land Pattern - Power SOIC-8L (C) F THERMAL VIA P ? 0.36mm NOTES: 1. THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY. CONSULT YOUR MANUFACTURING GROUP ...

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