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| UR5512 Datasheet, PDF (4/7 Pages) Unisonic Technologies – 2A DDR BUS TERMINATION REGULATOR | |||
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UR5512
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
RATING
UNIT
VCNTL Control Voltage
VCNTL
-0.2 ~ 7
V
VIN Supply Voltage
VIN
-0.2 ~ 3.9
V
Power Dissipation
PD
Internally Limited
W
Junction Temperature
TJ
+125
°C
Storage Temperature
TSTG
-40 ~ +150
°C
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
PARAMETER
SYMBOL
RANGE
VCNTL Control Voltage (Note 1)
VCNTL
3.1 ~ 6
VIN Supply Voltage
VIN
1.2 ~ 3.5
VREF Input Voltage
VREF
0.85 ~ 1.75
VOUT Output Voltage (Note 2)
VOUT
VREF ± 0.02
VOUT Output Current
IOUT
-2 ~ +2
Junction Temperature
TJ
Note: 1. Please always keep VCNTL-VOUT>1.9V for good regulation.
2. The VOUT tracks the VREF with additional voltage offset and load regulation.
0 ~ +125
ELECTRICAL CHARACTERISTICS
UNIT
V
V
V
V
A
°C
(VIN = 1.8V, VCNTL = 5V, VREFEN = 0.5VIN), TA = 25°C, unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
Input Current
Operation Current of VCNTL
ICNTL
IOUT = 0A
VREF=GND (Shutdown)
Current into VREF Pin
IREF
VREF =1.25V
VREF = GND (Shutdown)
Standby Current
ISTB VREF < 0.2V, RLOAD = 180â¦
Output Voltage
Output Voltage Offset (VOUT - VREF)
VOS IOUT = 0A
Load Regulation
âVLOAD IOUT = ±1.5A
Protection
Current limit
ILIM
Thermal Shutdown Temperature
TSD
VCNTL = 5V
Thermal Shutdown Hysteresis
âTSD VCNTL = 5V
REFEN Shutdown
Shutdown Threshold
VIH Enable
VIL Shutdown
MIN TYP MAX UNIT
2
4 mA
1.9
200 500 nA
20 40 µA
50 90 µA
â20 6 +20 mV
â20
+20 mV
2.0
A
125 180
°C
40
°C
0.2 0.35 0.65 V
0.15
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
4 of 7
QW-R101-017,A
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