SC2596 PDF даташит
Спецификация SC2596 изготовлена «Semtech Corporation» и имеет функцию, называемую «Low Voltage Integrated DDR Termination Regulator». |
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Детали детали
Номер произв | SC2596 |
Описание | Low Voltage Integrated DDR Termination Regulator |
Производители | Semtech Corporation |
логотип |
13 Pages
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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 +/- 2.5A for DDR-I and +/-
1.5A for DDR-II application requirements.
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SC2596
Low Voltage Integrated DDR
Termination Regulator
Features
Sourcing or sinking 2.5A for DDR-I
Sourcing or sinking 1.5A for DDR-II
AVCC undervoltage lockout
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
A VSENSE pin is incorporated to provide excellent load
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.
Applications
DDR-I and DDR-II memory termination
SSTL-2 and SSTL-3 termination
HSTL termination
PC motherboards
Graphics boards
Disk drives
CD-ROM drives
Typical Application Circuit
EN
VDDQ
AVCC
SC2596
EN
VTT
VDDQ VSENSE
PVCC
VREF
VREF
VTT
Revision: July 18, 2007
0
1
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SC2596
POWER MANAGEMENT
PRELIMINARY
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.
Parameter
Symbol
Maximum
Units
PVCC, AVCC, VDDQ to GND
Maximum Junction Temperature Range
Storage Temperature Range
Peak IR Reflow Temperature 10-40S
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ESD Rating (Human Body Model)
VCC -0.3 to +6.0 V
TJ
-40 to +125
OC
TSTG -65 to +150 OC
T
PKG
260
OC
ESD 2 kV
Electrical Characteristics (DDR-I)
Unless otherwise specified: TJ = -40oC to +125oC, AVCC = PVCC = 2.5V, VDDQ = 2.5V.
Parameter
Symbol
Test Conditions
Min
Typ
Max
Reference Voltage
VREF Output Impedance
VTT Output Regulation (1)
Quiescent Current
AVCC Enable Threshold
VDDQ Input Impedance
Quiescent Current in Shutdown
EN Pin Leakage Current
EN Threshold Voltage
VREF
ZVREF
(VTT - VREF)
IQ
ZVDDQ
ISD
IQ_SD
VH
VL
IREF_OUT = 0mA
IREF = -30uA to +30uA
IOUT = 0A
IOUT = -1.5A
IOUT = +1.5A
ILOAD = 0A
0.49VDDQ 0.5VDDQ
230
-25 0
400
2.1
0.51VDDQ
+25
700
2.2
100
EN = 0
150 250
EN = 0
1
2
0.8
VTT Leakage Current in
Shutdown
IVTT_L SD = 0V, VTT = 1.25V,
at 25 OC
6
Units
V
Ω
mV
uA
V
kΩ
uA
uA
V
uA
© 2007 Semtech Corp.
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SC2596
POWER MANAGEMENT
Electrical Characteristics (DDR-I Cont.)
Unless otherwise specified: TJ = -40oC to +125oC, AVCC = PVCC = 2.5V, VDDQ = 2.5V.
Parameter
Symbol
Test Conditions
Min Typ Max
VSENSE Current
ISENSE
50 200
Thermal Shutdown
T
SD
160
Thermal Shutdown Hysteresis
T
SD_HYS
10
Note: (1) Regulation is measured by using a load current pulse. (Pulse Width less than 10mS, Duty Cycle less than 2%, TA = 25oC)
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Electrical Characteristics (DDR-II)
Unless otherwise specified: TJ = -40oC to +125oC, AVCC = 3.3V, PVCC = VDDQ = 1.8V.
Parameter
Symbol
Test Conditions
Min
Typ
Max
Reference Voltage
VREF Output Impedance
VTT Output Regulation (1)
Quiescent Current
AVCC Enable Threshold
VDDQ Input Impedance
Quiescent Current in Shutdown
EN Pin Leakage Current
EN Threshold Voltage
VREF
ZVREF
(VTT - VREF)
IQ
ZVDDQ
ISD
IQ_SD
VH
VL
IREF_OUT = 0mA
IREF = -30uA to +30uA
IOUT = 0A
IOUT = -1.0A
IOUT = +1.0A
ILOAD = 0A
0.49VDDQ 0.5VDDQ
230
-25 0
400
2.1
0.51VDDQ
+25
700
2.2
100
EN = 0
150 250
EN = 0
0.5
2
0.8
VTT Leakage Current in
Shutdown
IVTT_L SD = 0V, VTT = 0.9V,
at 25 OC
6
VSENSE Current
ISENSE
50 200
Thermal Shutdown
TSD
160
Thermal Shutdown Hysteresis
TSD_HYS
10
Note: (1) Regulation is measured by using a load current pulse. (Pulse Width less than 10mS, Duty Cycle less than 2%, TA = 25oC)
Units
nA
OC
OC
Units
V
Ω
mV
uA
V
kΩ
uA
uA
V
uA
nA
OC
OC
© 2007 Semtech Corp.
3
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