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PDF SE9174 Data sheet ( Hoja de datos )
| Número de pieza | SE9174 | |
| Descripción | 2.0A Bus Termmination Regulator | |
| Fabricantes | Seaward | |
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Description
The SE9174 regulator is designed to convert
www.datavsohletaetg4eu.csomupplies ranging from 1.6V to 6V into a
desired output voltage, which is adjusted by two
external voltage divider resistors. The regulator is
capable of sourcing or sinking up to 2.0A of current
while regulating an output voltage to within 2%
(DDR 1 or DDR 2) or less.
The SE9174, used in conjunction with series
termination resistors, provides an excellent voltage
source for active termination schemes of high
speed transmission lines as those seen in high
speed memory buses and distributed back-plane
designs. The voltage output of the regulator can be
used as a termination voltage for DDR SDRAM.
Current limits in both sourcing and sinking
mode, plus on-chip thermal shutdown make the
circuit tolerant of the output fault conditions.
Pin Configuration
Features
¾ Support Both DDR 1 (1.25VTT) and DDR 2
(0.9VTT) Requirements
¾ SOP-8 Packages
¾ Capable of Sourcing and Sinking Current 2.0A
¾ Current-limiting Protection
¾ Thermal Protection
¾ Current-shoot-through protection
¾ Integrated Power MOSFETs
¾ Generates Termination Voltages for SSTL-2
¾ High Accuracy Output Voltage at Full-Load
¾ Adjustable Vout by External Resistors
¾ Minimum External Components
¾ Shutdown for Standby or Suspend Mode
Operation with High-impedance Output
Application
¾ DDR Memory Termination
¾ Active Termination Buses
¾ Supply Splitter
Block Diagram
Pin Description
Pin Name
Pin function
VIN
GND
Power Input
Ground
VCNTL
REFEN
Gate Drive Voltage
Reference Voltage input and
Chip Enable
VOUT
Output Voltage
VCNTL
VIN
REFEN
Current
Limiting Sensor
Thermal
CNTL
VOUT
GND
All contents are subject to change without prior notice
© Seaward Electronics Inc., 2005. • www.seawardinc.com • Page 1
1 page  
Outline Drawing SOP-8
www.datasheet4u.com
D
18
27
36
45
E
H
C
B
B1
A1
A
DIMENSIONS
DIMN
INCHES
MIN MAX
MM
MIN MAX
A 0.0532 0.0688 1.35 1.75
A1 0.0040 0.0098 0.10 0.25
B 0.0130 0.0200 0.33 0.51
B1 0.050 BSC
1.27 BSC
C 0.0075 0.0098 0.19 0.25
D 0.1890 0.1968 4.80 5.00
H 0.2284 0.2440 5.80 6.20
E 0.1497 0.1574 3.80 4.00
Contact Information
Seaward Electronics Incorporated – China
Room 1605, Building 1, International Pioneering Park, #1 Shangdi Xinxi Rd.
Haidian District, Beijing 100085, China
Tel: 86-10-8289-5700/01/05
Fax: 86-10-8289-5706
Email: [email protected]
Seaward Electronics Corporation – Taiwan
2F, #181, Sec. 3, Min Quan East Rd.
Taipei, Taiwan R.O.C
Tel: 886-2-2712-0307
Fax: 886-2-2712-0191
Email: [email protected]
Seaward Electronics Incorporated – North America
49 Showers Dr. J126
Mountain View, CA 94040, USA
Tel: 1-408-821-6600
Last Updated - 3/21/2005
All contents are subject to change without prior notice
© Seaward Electronics Inc., 2005. • www.seawardinc.com • Page 5
5 Page | ||
| Páginas | Total 5 Páginas | |
| PDF Descargar | [ Datasheet SE9174.PDF ] | |
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