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CYT9174

2.0A BUS Termination Regulator

Features

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Pin Configuration

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Support Both DDR 1 (1.25VTT) and DDR 2

(0.9VTT) Requirements

SOP-8 Packages

Capable of Sourcing and Sinking Current

2.0A

Current-limiting Protection

Thermal Protection

Current-shoot-through protection

Integrated Power MOSFETs

Generates Termination Voltages for SSTL-2

High Accuracy Output Voltage at Full-Load

Adjustable Vout by External Resistors

Minimum External Components

Shutdown for Standby or Suspend Mode

Operation with High-impedance Output.

SOP-8

1.VIN

2.GND

3.REFEN

4.VOUT

5.VCNTL

6.VCNTL

7.VCNTL

8.VCNTL

Applications

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Description

The CYT9174 regulator is designed to convert

voltage supplies 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 CYT9174, 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.

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DDR Memory Termination

Active Termination Buses

Supply Splitter.

Block Diagram

Pin Description

ShenZhen CYT IC Design CO ,Ltd

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CYT9174

英文版

2.0A Bus Termination Regulator

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CYT9174

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