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| UR5512_09 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 ~ 6
V
Power Dissipation
Junction Temperature
Storage Temperature
PD
Internally Limited
W
TJ
+125
°C
TSTG
-40 ~ +150
°C
Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Note: 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
1.6 ~ 5.5
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
0 ~ +125
Notes: 1. Please always keep VCNTL-VOUT>1.9V for good regulation.
2. The VOUT tracks the VREF with additional voltage offset and load regulation.
 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
OUTPUT VOLTAGE
ISTB VREF < 0.2V, RLOAD = 180â¦
Output Voltage Offset (VOUT - VREF) VO(OFF) IOUT = 0A
Load Regulation
PROTECTION
ÎVLOAD IOUT = ±1.5A
Current limit
ILIMIT
Thermal Shutdown Temperature
TSD
VCNTL = 5V
Thermal Shutdown Hysteresis
ÎTSD VCNTL = 5V
REFEN Shutdown
Shutdown Threshold
VIH Enable
VIL Shutdown
MIN TYP MAX UNIT
2
4 mA
1.9
mA
200 500 nA
20 40 µA
50 90 µA
-20 6 +20 mV
-20
+20 mV
2.0
A
125 180
°C
40
°C
0.6
V
0.15 V
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
4 of 7
QW-R101-017,D
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