XRP2997 Datasheet, PDF (2/8 Pages) Exar Corporation – 2A DDR I/II/III Bus Termination Regulator

XRP2997
2A DDR I/II/III Bus Termination Regulator
ABSOLUTE MAXIMUM RATINGS
These are stress ratings only and functional operation of
the device at these ratings or any other above those
indicated in the operation sections of the specifications
below is not implied. Exposure to absolute maximum
rating conditions for extended periods of time may affect
reliability.
V_IN, V_REF, V_CNTL .......................................... -0.3V to 6.0V
Junction Temperature Range..................-40°C to +150°C
Storage Temperature ............................ -65°C to +150°C
Lead Temperature (Soldering, 10 sec) ................... 260°C
OPERATING RATINGS
Operating Temperature Range ................. -40°C to +85°C
Thermal Resistance θ_JA ...................................... 60°C/W
Thermal Resistance θ_JC ...................................... 16°C/W
ELECTRICAL SPECIFICATIONS
Specifications are for an Operating Ambient Temperature of T_A = 25°C only; limits applying over the full Operating Junction
Temperature range are denoted by a “•”. Minimum and Maximum limits are guaranteed through test, design, or statistical
correlation. Typical values represent the most likely parametric norm at T_A = 25°C, and are provided for reference purposes
only. Unless otherwise indicated, V_IN = 1.8V/1.5V, V_CNTL = 3.3V, V_REF = 0.5xV_IN, C_OUT = 22µF (ceramic), T_A= 25°C.
Parameter
V_IN, Input Voltage Range
V_CNTL, Input Voltage Range
V_OUT, Output Voltage
V_OS, Output Voltage Offset
∆V_LOR, Load Regulation
I_Q, Quiescent Current
I_CNTL, Operating Current of V_CNTL
I_REF, Bias Current of V_REF
I_IL, Current Limit
R_DSCHG, Output Discharge
Resistance
Thermal Protection
T_SD, Thermal Shutdown
Temperature
Thermal Shutdown Hysteresis
Shutdown Specifications
V_TRIGGER, Shutdown Threshold
Min.
1.1
2.375
-20
-20
-20
0
2.4
Typ.
1.8/1.5
3.3
V_REF
2
1
3
18
160
30
0.8
Max.
5.5
5.5
+20
+20
+20
90
2.5
1
25
0.2
Units
V
V
V
mV
mV
mV
µA
mA
µA
A
Ω
°C
°C
V
Conditions
Keep V_CNTL≥V_IN during power on and
power off sequences (note 4)
Keep V_CNTL≥V_IN during power on and
power off sequences (note 4)
I_OUT = 0mA
I_OUT = 0mA (note 1)
I_OUT = 0.1mA to +2A
I_OUT = 0.1mA to -2A
V_REF < 0.2V, V_OUT = OFF
I_OUT = 0mA
V_REF = 1.25V
Source: V_OUT=0.33xV_REF
Sink: V_OUT=0.95xV_IN (note 3)
V_REF=0V, V_OUT=0.3V
3.3V ≤ V_CNTL ≤ 5V, guaranteed by design
(note 4)
Guaranteed by design
Output ON
V_REF = 0V  1.25V
Output OFF
V_REF = 1.25V  0V
Note 1: V_OS offset is the voltage measurement defined as V_OUT subtracted from V_REF.
Note 2: Load regulation is measured at constant junction temperature, using pulse testing with a short ON time.
Note 3: Current limit is measured by applying a short duration current pulse.
Note 4: In order to safely operate your system, V_CNTL must be > V_IN.
© 2011 Exar Corporation
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Rev. 1.0.0