UNISONIC TECHNOLOGIES CO., LTD

UR5595

MOS IC

www.unisonic.com.tw

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Copyright © 2005 Unisonic Technologies Co., Ltd

QW-R502-062,A

DDR TERMINATION

REGULATOR

DESCRIPTION

The UTC UR5595 is a linear bus termination regulator designed

to meet JEDEC SSTL-2 and SSTL-3 (Stub Series Terminated

Logic) specifications for termination of DDR-SDRAM. The device

contains a high-speed operational amplifier to provide excellent

response to the load transients, and can deliver 1.5A continuous

current and transient peaks up to 3A in the application as required

for DDR-SDRAM termination.

the reference for the application of the chipset and DIMMs.

been designed to maintain excellent load regulation and with fast

response time to minimum the transition preventing shoot-through.

The UTC UR5595 also incorporates two distinct power rails that

separates the analog circuitry (AVIN) from the power output stage

(PVIN). This power rail split can be utilized to reduce the internal

power dissipation. And this also permits UTC UR5595 to provide a

termination solution for DDRII SDRAM.

FEATURES

* Power regulating with driving and sinking capability

* Low output voltage offset

* No external resistors required

* Low external component count

* Linear topology

* Low cost and easy to use

* Thermal shutdown protection

*Pb-free plating product number: UR5595L

ORDERING INFORMATION

Ordering Number

Normal

Lead Free Plating

Package

Packing

UR5595-S08-R

UR5595L-S08-R

SOP-8

Tape Reel

UR5595-S08-T

UR5595L-S08-T

SOP-8

Tube

UR5595-SH2-R

UR5595L-SH2-R

HSOP-8

Tape Reel

UR5595-SH2-T

UR5595L-SH2-T

HSOP-8

Tube