SC2596EVB SEMTECH [Semtech Corporation], SC2596EVB Datasheet

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SC2596EVB

Manufacturer Part Number
SC2596EVB
Description
Low Voltage Integrated DDR Termination Regulator
Manufacturer
SEMTECH [Semtech Corporation]
Datasheet
The SC2596 is an integrated linear DDR termination
device, which provides a complete solution for DDR
termination regulator designs; while meeting the JEDEC
requirements of SSTL-2 and SSTL-18 specifications for
DDR-SDRAM termination.
The SC2596 regulates up to +/- 2.5A for DDR-I and +/-
1.5A for DDR-II application requirements.
V
current range with shoot through protection.
A V
regulation, along with a buffered reference voltage for
internal use.
The SC2596 also features a disable function which is to
tri-state the output during Suspend To Ram (STR) states
by pulling the EN pin low.
Revision: July 18, 2007
POWER MANAGEMENT
Typical Application Circuit
Description
TT
is regulated to track the V
SENSE
pin is incorporated to provide excellent load
VDDQ
EN
REF
voltage over the entire
EN
VDDQ
PVCC
SC2596
AVCC
VSENSE
1
0
VREF
Features
Applications
VTT
Sourcing or sinking 2.5A for DDR-I
Sourcing or sinking 1.5A for DDR-II
AV
Reference output
Minimum number of external components
Accurate internal voltage divider
Disable function, puts device into sleep mode
Thermal shutdown
Over current protection
Available in SOIC-8 EDP package
WEEE and RoHS compliant
DDR-I and DDR-II memory termination
SSTL-2 and SSTL-3 termination
HSTL termination
PC motherboards
Graphics boards
Disk drives
CD-ROM drives
CC
undervoltage lockout
Low Voltage Integrated DDR
VREF
Termination Regulator
VTT
www.semtech.com
SC2596

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SC2596EVB Summary of contents

Page 1

POWER MANAGEMENT Description The SC2596 is an integrated linear DDR termination device, which provides a complete solution for DDR termination regulator designs; while meeting the JEDEC requirements of SSTL-2 and SSTL-18 specifications for DDR-SDRAM termination. The SC2596 regulates up to ...

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

POWER MANAGEMENT Electrical Characteristics (DDR-I Cont.) Unless otherwise specified - +125 ...

Page 4

POWER MANAGEMENT Waveforms AVCC AVCC VDDQ//PVCC VDDQ//PVCC Vref Vref VTT VTT Start up. AVCC AVCC PVCC PVCC EN EN VTT VTT Start up by EN. AVCC AVCC PVCC PVCC VTT VTT load © 2007 Semtech Corp. AVCC ...

Page 5

POWER MANAGEMENT Waveforms 4.0 3.5 3.0 2.5 2.0 2 2.5 3 3.5 AVCC (V) Maximum Sourcing Current vs AVCC. (VDDQ=1.8V, PVCC=2.5V) 3.0 2.5 2.0 1.5 1.0 2 2 (V) Maximum Sourcing Current vs AVCC. (VDDQ=1.8V, ...

Page 6

POWER MANAGEMENT Pin Configuration TOP VIEW TOP VIEW GND GND GND GND ...

Page 7

POWER MANAGEMENT Pin Descriptions ...

Page 8

POWER MANAGEMENT Block Diagram EN AVCC VDDQ - + Vref Buffer VREF Description Description Description Description Description SC2596 is a low-voltage, low-dropout DDR termination regulator with separate power supply to support both DDR1 and DDR2 applications. AVCC and PVCC can ...

Page 9

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

Page 10

POWER MANAGEMENT Application Information (Cont.) Application_2: Lower Power Loss Configuration for SSTL-2 If power loss is a major concern, separating the PVCC form AVCC and VDDQ will be a good choice (Figure 2). The PVCC can operate at lower voltage ...

Page 11

POWER MANAGEMENT Application Information (Cont.) Layout guidelines 1) The EDP SO-8 package of SC2596 can improve the θ thermal impedance ( ) significantly. A suitable thermal JC pad should be add when PCB layout. Some thermal vias are required to ...

Page 12

POWER MANAGEMENT Typical Application Circuit VDDQ 1.8V EN VREF R1 0. Bill of Material ...

Page 13

POWER MANAGEMENT Outline Drawing - Power SOIC-8L (EDP N/2 TIPS SEATING PLANE EXPOSED PAD NOTES: 1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). 2. DATUMS 3. DIMENSIONS "E1" AND "D" DO NOT INCLUDE MOLD FLASH, PROTRUSIONS OR ...

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