UNISONIC TECHNOLOGIES CO., LTD

UR5515

CMOS IC

www.unisonic.com.tw

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Copyright © 2005 Unisonic Technologies Co., LTD

QW-R502-056,A

1.5A/3A BUS TERMINATION

REGULATOR

DESCRIPTION

The UTC UR5515 is a linear bus termination regulator and

designed to convert voltage supplies ranging from 1.6V~6.0V into a

desired output voltage, which adjusted by two external voltage

divider resistors. The device can both source and sink up to 1.5A/3A

of current while regulating an output voltage to within 2% (DDR-I)

and 3% (DDR-II) or less.

The UTC UR5515 is capable of use in conjunction with series

termination resistors to provide an excellent voltage source for active

termination schemes of high speed transmission lines as those seen

in high speed memory buses and distributed backplane designs.

The voltage output of the regulator can be used as a termination

voltage for DDR SDRAM.

FEATURES

* Capable of Sourcing and Sinking Current 1.5A/3A

* Current-limiting Protection and Thermal Shutdown Protection

* Integrated Power MOSFETs

* Generates Termination Voltages for SSTL-2

* High Accuracy Output Voltage at Full-Load

* Adjustable output voltage by External Resistors

* Minimum External Components

* Shutdown for Standby or Suspend Mode Operation with

High-impedance Output.

TO-263-5

SOP-8

TO-252-5

1

1

*Pb-free plating product number: UR5515L

ORDERING INFORMATION

Order Number

Normal

Lead Free Plating

Package

Packing

UR5515-S08-R

UR5515L-S08-R

SOP-8

Tape Reel

UR5515-S08-T

UR5515L-S08-T

SOP-8

Tube

UR5515-TN5-R

UR5515L-TN5-R

TO-252-5

Tape Reel

UR5515-TN5-T

UR5515L-TN5-T

TO-252-5

Tube

UR5515-TQ5-R

UR5515L-TQ5-R

TO-263-5

Tape Reel

UR5515-TQ5-T

UR5515L-TQ5-T

TO-263-5

Tube