UR5517

Preliminary

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

4 of 6

www.unisonic.com.tw

QW-R102-041.a

PARAMETER

SYMBOL

RATINGS

UNIT

Supply Voltage(VIN,VLDOIN,VDDQSNS,S3,S5)

-0.3~6

V

Power Ground Output for the VTT Output

-0.3~0.3

V

Output Voltage(VTT,VTTREF)

-0.3~VLDOIN+0.3

V

Junction Temperature

160

℃

Storage Temperature

-55 ~ +160

℃

Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.

Absolute maximum ratings are stress ratings only and functional device operation is not implied.

RECOMMENDED OPERATING CONDITIONS (Note1, 2)

PARAMETER

SYMBOL

MIN

TYP

MAX

UNIT

Input Voltage

3

5.5

V

STR and Shutdown Voltage

S3,S5

-0.1

5.5

V

VDDQ Sense Input

1.3

3.6

V

Power Supply for the VTT and VTTREF Output Stage

1.2

3.6

V

Power Ground Output for the VTT Output

-0.1

0.1

V

Operating Temperature

-40

85

℃

1. All voltage values are with respect to the network ground terminal unless otherwise noted.

Note:

2. Please always keep VLDOIN,VTTSNS,VDDQSNS,S3,S5 lower than VIN on operation.

ELECTRICAL CHARACTERISTICS

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

S5=Hi,S3=Hi, no load(Normal)

0.5

0.8

2

mA

S5=Hi,S3=Lo, no load(Standby)

110

200

uA

Current of VIN

S5=Lo,S3=Lo, no load(Shutdown)

1

uA

S5=Hi,S3=Hi, no load(Normal)

0.03

2

mA

0.1

10

uA

Current of VLDOIN

0.1

1

uA

Input Impedance of VDDQSNS

200

kΩ

Input Current of VTTSNS

S5=Hi,S3=Hi

0.3

1

uA

DDR1(VLDOIN=VDDQSNS=2.5V)

1.25

DDR2(VLDOIN=VDDQSNS=1.8V)

0.9

Output Voltage of VTT

VTT

DDR3(VLDOIN=VDDQSNS=1.5V)

0.75

V

-20

20

∣

∣

1.5A

-30

30

Load Regulation of VTT

(VTTREF-VTT)

VosVTT

∣

∣

-40

40

mV

VTT=VDDQSNS/2*0.95,PGOOD=HI

3

4

Source Current Limit of VTT

VTT=0

1.5

2

A

VTT=VDDQSNS/2*1.05,PGOOD=HI

3

4

Sink Current Limit of VTT

VTT=VDDQSNS

1.5

2

A

Leakage Current of VTT

S5=Hi,S3=Lo

0.01

uA

Discharge Current of VTT

S5=Lo, VDDQSNS=0V,VTT=0.5V

10

20

mA

DDR1(VLDOIN=VDDQSNS=2.5V)

1.25

DDR2(VLDOIN=VDDQSNS=1.8V)

0.9

Output Voltage of VTTREF

DDR3(VLDOIN=VDDQSNS=1.5V)

0.75

V

Load Regulation of VTTREF

∣

∣

10mA

-20

20

mV

High Level Input Voltage

S3 & S5 pin

1.6

Low Level Input Voltage

S3 & S5 pin

1

V

Logic Input Leakage Current

S3 & S5 pin

-1

1

uA

Thermal Shutdown Temperature

VIN=3V~5.5V

160

Thermal Shutdown Hysteresis

VIN=3V~5.5V

20

℃