UNI SONI C TECHNOLOGI ES CO., LTD

UR5517

LINEAR INTEGRATED CIRCUIT

www.unisonic.com.tw

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Copyright © 2018 Unisonic Technologies Co., Ltd

QW-R102-041.H

3 A DDR BU S T ERM I N AT I ON

REGU LAT OR



DESCRI PT I ON

The UR5517 is a linear regulator which provides up to 3 Amp

bi-directional sourcing and sinking capability for DDR1/2/3 SDRAM

bus terminator applications. It only requires 20uF of ceramic output

capacitance by a integrated operational amplifier which provides fast

load transient response.

The UR5517 also includes two control pins, S3 & S5. If S3 were

turned off and discharged to ground(soft-off mode).



FEAT U RES

* Input Voltage Range:3~5.5V

* DDR1/2/3 Termination Voltage Applications

* Sourcing and Sinking Current up to 3A

* Supports High-Z in S3(STR) and Soft-off in S5(Shutdown)

* Built-In Soft-Start

* Current Limiting Protection

* Thermal Shutdown Protection



ORDERI N G I N FORM AT I ON

Ordering Number

Lead Free

Halogen Free

Package

Packing

UR5517L-SM1-R

UR5517G-SM1-R

MSOP-8

Tape Reel

UR5517L-HM1-R

UR5517G-HM1-R

HMSOP-8

Tape Reel

UR5517L-SM2-R

UR5517G-SM2-R

MSOP-10

Tape Reel

UR5517L-HM2-R

UR5517G-HM2-R

HMSOP-10

Tape Reel