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NCP5208_06 Datasheet, PDF (1/9 Pages) ON Semiconductor – DDR−I/II Termination Regulator | |||
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NCP5208
DDRâI/II Termination
Regulator
The NCP5208 is a linear regulator specifically designed for the
active termination of DDRâI/II SDRAM. The device can be operated
from a single supply voltage as low as 1.7 V. For DDRâI
applications, the device is capable of sourcing and sinking current up
to 1.5 A with the output voltage regulated to within "3% or better. A
separate voltage feedback pin ensures superior load regulation
against load and line changes.
Protective features include softâstart, source/sink current limits
and thermal shutdown. Openâdrain VTT OK output (POK) is added
for system monitoring. The shutdown pin can triâstate the regulator
output for Suspend To RAM (STR) state. This device is available in a
SOICâ8 package.
Features
⢠Supports Both DDRâI and DDRâII SDRAM Requirements
⢠Single Supply Voltage Operation as Low as 1.7 V
⢠Integrated Power MOSFETs
⢠Few External Components Needed
⢠Source and Sink Current Up to 1.5 A
⢠Load Regulation Within "3%
⢠Both Source and Sink Current Limits
⢠OpenâDrain VTT OK (POK) Pin
⢠Shutdown Pin
⢠Thermal Shutdown
⢠Housed in SOICâ8 Package
⢠PbâFree Package is Available
Typical Applications
⢠DDR Termination Voltage
⢠Active Bus Termination (SSTLâ2, SSTLâ3)
2.5 V
VDDQ
VDDQ
SD
AVIN
2.5 V
CIN
AVIN
PVIN
NCP5208
POK
VTT
VTT
1.25 V,
VFB
1.5 A
COUT
GND
Figure 1. Typical Application Circuit
http://onsemi.com
SOICâ8
D SUFFIX
1
CASE 751
MARKING DIAGRAM
8
N5208
ALYW
G
1
A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
G = PbâFree Package
PIN CONNECTIONS
POK 1
GND 2
VFB 3
SD 4
8 VTT
7 PVIN
6 AVIN
5 VDDQ
(Top View)
ORDERING INFORMATION
Device
Package
Shippingâ
NCP5208DR2
NCP5208DR2G
SOICâ8
SOICâ8
(PbâFree)
2500/Tape & Reel
2500/Tape & Reel
â For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
© Semiconductor Components Industries, LLC, 2006
1
May, 2006 â Rev. 5
Publication Order Number:
NCP5208/D
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