LP2998MRX Datasheet, PDF (3/26 Pages) Texas Instruments – LP2998 DDR-I and DDR-II Termination Regulator

LP2998
www.ti.com
SNVS521I – DECEMBER 2007 – REVISED APRIL 2013
Absolute Maximum Ratings ⁽¹⁾⁽²⁾
AVIN to GND
PVIN to GND
VDDQ ⁽³⁾
Storage Temp. Range
Junction Temperature
Lead Temperature (Soldering, 10 sec)
SOIC-8 Thermal Resistance (θ_JA)
SO PowerPAD-8 Thermal Resistance (θ_JA)
Minimum ESD Rating ⁽⁴⁾
−0.3V to +6V
-0.3V to AVIN
−0.3V to +6V
−65°C to +150°C
150°C
260°C
151°C/W
43°C/W
1kV
(1) Absolute maximum ratings indicate limits beyond which damage to the device may occur. Operating range indicates conditions for which
the device is intended to be functional, but does not ensure specific performance limits. For ensured specifications and test conditions
see Electrical Characteristics. The ensured specifications apply only for the test conditions listed. Some performance characteristics may
degrade when the device is not operated under the listed test conditions.
(2) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and
specifications.
(3) VDDQ voltage must be less than 2 x (AVIN - 1) or 6V, whichever is smaller.
(4) The human body model is a 100 pF capacitor discharged through a 1.5 kΩ resistor into each pin.
Operating Range
Junction Temp. Range ⁽¹⁾
AVIN to GND
-40°C to +125°C
2.2V to 5.5V
(1) At elevated temperatures, devices must be derated based on thermal resistance. The device in the SOIC-8 package must be derated at
θ_JA = 151.2° C/W junction to ambient with no heat sink.
Electrical Characteristics
Specifications with standard typeface are for T_J = 25°C and limits in boldface type apply over the full Operating
Temperature Range (T_J = -40°C to +125°C) ⁽¹⁾. Unless otherwise specified, VIN = AVIN = PVIN = 2.5V.
Parameter
Test Conditions
Min Typ Max
V_REF Voltage (DDR I)
VIN = VDDQ = 2.3V
VIN = VDDQ = 2.5V
1.135 1.158 1.185
1.235 1.258 1.285
VIN = VDDQ = 2.7V
1.335 1.358 1.385
V_REF
V_REF Voltage (DDR II)
PVIN = VDDQ = 1.7V
PVIN = VDDQ = 1.8V
PVIN = VDDQ = 1.9V
0.837
0.887
0.936
0.860
0.910
0.959
0.887
0.937
0.986
V_REF Voltage (DDR III)
PVIN = VDDQ = 1.35V
PVIN = VDDQ = 1.5V
0.669 0.684 0.699
0.743 0.758 0.773
PVIN = VDDQ = 1.6V
0.793 0.808 0.823
Z_VREF V_REF Output Impedance
I_REF = -30 to +30 µA
2.5
Units
V
V
V
V
V
V
V
V
V
kΩ
(1) Limits are 100% production tested at 25°C. Limits over the operating temperature range are specified through correlation using
Statistical Quality Control (SQC) methods. The limits are used to calculate Average Outgoing Quality Level (AOQL).
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