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UR5517G-SM2-R Datasheet(PDF) 4 Page - Unisonic Technologies

Part # UR5517G-SM2-R
Description  3A DDR BUS TERMINATION REGULATOR
PDF  9 Pages
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Manufacturer  UTC [Unisonic Technologies]
Direct Link  http://www.utc-ic.com
Logo UTC - Unisonic Technologies

UR5517G-SM2-R Datasheet(HTML) 4 Page - Unisonic Technologies

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UR5517
LINEAR INTEGRATED CIRCUIT
UNISONICTECHNOLOGIESCO.,LTD
4 of 9
www.unisonic.com.tw
QW-R102-041.B
ABSOLUTE MAXIMUM RATING (unless otherwise specified)
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage(VIN,VLDOIN,VDDQSNS,S3,S5)
-0.3~6
V
Power Ground Output for the VTT Output
PGND
-0.3~0.3
V
Output Voltage(VTT,VTTREF)
VTT,VTTREF
-0.3~VLDOIN+0.3
V
Junction Temperature
TJ
160
℃
Storage Temperature
TSTG
-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
VIN
3
5.5
V
STR and Shutdown Voltage
S3,S5
-0.1
5.5
V
VDDQ Sense Input
VDDQSNS
1.3
3.6
V
Power Supply for the VTT and VTTREF Output Stage
VLDOIN
1.2
3.6
V
Power Ground Output for the VTT Output
PGND
-0.1
0.1
V
Operating Temperature
TA
-40
85
℃
Note: 1. All voltage values are with respect to the network ground terminal unless otherwise noted.
2. Please always keep VLDOIN,VTTSNS,VDDQSNS,S3,S5 lower than VIN on operation.
ELECTRICAL CHARACTERISTICS
(VIN=5V,VLDOIN=VDDQSNS=2.5V, TA=25℃.Unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Current of VIN
IVIN
S5=Hi,S3=Hi, no load(Normal)
0.5
0.8
2
mA
IVINSTB
S5=Hi,S3=Lo, no load(Standby)
110
200
uA
IVINSDN
S5=Lo,S3=Lo, no load(Shutdown)
1
uA
Current of VLDOIN
IVLDOIN
S5=Hi,S3=Hi, no load(Normal)
0.03
2
mA
IVLDOINSTB S5=Hi,S3=Lo, no load(Standby)
0.1
10
uA
IVLDOINSDN S5=Lo,S3=Lo, no load(Shutdown)
0.1
1
uA
Input Impedance of VDDQSNS
ZVDDQSNS S5=Hi,S3=Hi
200
kΩ
Input Current of VTTSNS
IVTTSNS
S5=Hi,S3=Hi
0.3
1
uA
Output Voltage of VTT
VTT
DDR1(VLDOIN=VDDQSNS=2.5V)
1.25
V
DDR2(VLDOIN=VDDQSNS=1.8V)
0.9
DDR3(VLDOIN=VDDQSNS=1.5V)
0.75
Load Regulation of VTT
(VTTREF-VTT)
VosVTT
IVTT =0
-20
20
mV
I
∣ VTT <
∣
1.5A
-30
30
I
∣ VTT <3A
∣
-40
40
Source Current Limit of VTT
IVTTOCLSRC
VTT=VDDQSNS/2*0.95,PGOOD=HI
3
4
A
VTT=0
1.5
2
Sink Current Limit of VTT
IVTTOCLSNK
VTT=VDDQSNS/2*1.05,PGOOD=HI
3
4
A
VTT=VDDQSNS
1.5
2
Leakage Current of VTT
IVTTLK
S5=Hi,S3=Lo
0.01
uA
Discharge Current of VTT
IVTTDIS
S5=Lo, VDDQSNS=0V,VTT=0.5V
10
20
mA
Output Voltage of VTTREF
VTTREF
DDR1(VLDOIN=VDDQSNS=2.5V)
1.25
V
DDR2(VLDOIN=VDDQSNS=1.8V)
0.9
DDR3(VLDOIN=VDDQSNS=1.5V)
0.75
Load Regulation of VTTREF
ΔVTTREF
I
∣ VTTREF <
∣
10mA
-20
20
mV
High Level Input Voltage
VIH
S3 & S5 pin
1.6
V
Low Level Input Voltage
VIL
S3 & S5 pin
1
Logic Input Leakage Current
IILEAK
S3 & S5 pin
-1
1
uA
Thermal Shutdown Temperature
TSD
VIN=3V~5.5V
160
℃
Thermal Shutdown Hysteresis
ΔTSD
VIN=3V~5.5V
20



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