|
|
PDF XRP2997 Data sheet ( Hoja de datos )
| Número de pieza | XRP2997 | |
| Descripción | 2A DDR I/II/III Bus Termination Regulator | |
| Fabricantes | Exar | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de XRP2997 (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
|
No Preview Available !
XRP2997
2A DDR I/II/III Bus Termination Regulator
October 2012
GENERAL DESCRIPTION
The XRP2997 is a Double Data Rate (DDR)
termination voltage regulator supporting all
power requirements of DDR I, II and III
memories and is capable of sinking or sourcing
2A continuously.
Tightly regulating its output voltage within
±20mV, the XRP2997 converts input voltages
as low as 1.1V while the output voltage is
adjustable through an external resistor divider
or by forcing the VREF pin voltage. It maintains
a fast line and load transient response and
only requires an output capacitance of 22µF to
operate. An enable function via an external
MOSFET and a soft start feature allow for a
controlled implementation of power-up
sequencing.
Built-in source/sink overcurrent, over-
temperature and under-voltage lockout
protections insure safe operation under
abnormal operating conditions.
The XRP2997 meets JEDEC SSTL-2, SSTL-18,
HSTL, SCSI-1 and SCSI-3 specifications for
DDR SDRAM memories.
The XRP2997 is offered in a RoHS compliant,
“green”/halogen free 8-pin Exposed Pad SOIC
package.
Rev. 1.2.0
APPLICATIONS
DDR I/II/III Memory Termination
Active Termination Buses
Audio-Video Equipments
Video-Graphics Cards
FEATURES
DDR1, DDR2 and DDR3 Support
0.75VTT Generation
±20mV Output Voltage Offset
2 Amps Continuous Current Sourcing &
Sinking
1.1V to 5.5V Wide Input Voltage Range
Adjustable Output Voltage
Suspend to RAM(STR), Enable & Soft
Start Functions
Stable with 22µF Ceramic Capacitor
UVLO, Over Temperature and Over
Current Protections
Minimal External Components
Pin/Function Compatible with SP2996B
RoHS Compliant “Green”/Halogen Free
8-Pin SOIC Package
TYPICAL APPLICATION DIAGRAM
Fig. 1: XRP2997 DDRIII VTT Application Diagram
Exar Corporation
48720 Kato Road, Fremont CA 94538, USA
www.exar.com
Tel. +1 510 668-7000 – Fax. +1 510 668-7001
1 page  
XRP2997
2A DDR I/II/III Bus Termination Regulator
Fig. 8: VIN=1.5V, VREF=0.75V source response
Fig. 9: VIN=1.8V, VREF=0.9V source response
Fig. 10: VIN=2.5V, VREF=1.25V source response
Fig. 11: VIN=1.5V, VREF=0.75V sink response
Fig. 9: VIN=1.8V, VREF=0.9V sink response
Fig. 10: VIN=2.5V, VREF=1.25V sink response
© 2012 Exar Corporation
5/8
Rev. 1.2.0
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet XRP2997.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| XRP2997 | 2A DDR I/II/III Bus Termination Regulator | Exar |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |