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SC2597 fiches techniques PDF

Semtech Corporation - Low Voltage DDR Termination Regulator

Numéro de référence SC2597
Description Low Voltage DDR Termination Regulator
Fabricant Semtech Corporation 
Logo Semtech Corporation 





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SC2597 fiche technique
POWER MANAGEMENT
Features
Input to linear regulator (VIN): 1.0V to 3.6V
Output (VTT): 0.5V to 1.8V
Bias Voltage (VDD): 2.35V to 3.6V
Up to 3A sink or source from VTT for DDR through
DDR4
+ 1% over temperature (with respect to VDDQ/2, in-
cluding internal resistor divider variation) VREF and
VTT
Logic-level enable input
Built in soft-start
Thermal shutdown with auto-restart
Over current protection
Minimal output capacitance
Package: SOIC8-EDP
Applications
DDR Memory Termination
SC2597
Low Voltage DDR
Termination Regulator
Description
The SC2597 is designed to meet the latest JEDEC specifi-
cation for low power DDR3 and DDR4, while also support-
ing DDR and DDR2. The SC2597 regulates up to + 3A for
VTT and up to + 40mA for VREF.
The SC2597 also provides an accuracy of +1% over tem-
perature (which takes into account the internal resistor
divider) for VREF and VTT for the memory controller and
DRAM.
SC2597 protection features include thermal shutdown
with auto-restart for VTT and over-current limit for both
VTT and VREF.
Under-Voltage-Lock-Out circuits are included to ensure
that the output is off when the bias voltage falls below its
threshold, and that the part behaves elegantly in power-
up or power-down.
The low external parts count combined with industry
leading specifications make SC2597 an attractive solution
for DDR through DDR4 termination.
Typical Application Circuit
C VDD
1μF
C IN
2x10μF
Rev. 2.6
VDDQ
VDD VIN
VDDQ
VTT
VTTS
VREF
EN GND
C VREF (1)
0.1μF
Note:
(1) This component is optional.
© 2014 Semtech Corporation
CVTT
3x10μF
1
Free Datasheet http://www.datasheet4u.net/

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