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Technical parameters

Datasheet-verified parameters

23 items
ParameterValue and test conditionsSource
PackageSO PowerPAD (DDA), 8 Pins
Operating Temperature0°C to +125°C
RoHSYes
VTT Output VoltagePVIN = VDDQ = 1.8V, IOUT = 0A: Min 0.874V, Typ 0.908V, Max 0.939V
VREF VoltagePVIN = VDDQ = 1.8V: Min 0.887V, Typ 0.910V, Max 0.937V
Quiescent CurrentIOUT = 0A: Typ 320μA, Max 500μA
Quiescent Current in ShutdownSD = 0V: Typ 115μA, Max 150μA
Thermal ShutdownTyp 165°C
Thermal Shutdown HysteresisTyp 10°C
AVIN Input Voltage Range2.2V to 5.5V
Absolute Maximum Rating AVIN-0.3V to +6V
Absolute Maximum Rating PVIN-0.3V to AVIN
Storage Temperature Range-65°C to +150°C
Junction Temperature150°C
ESD Rating1kV (Human Body Model)
SO PowerPAD-8 Thermal Resistance43°C/W (θJA)
VREF Output ImpedanceTyp 2.5kΩ (IREF = -30 to +30 μA)
VDDQ Input ImpedanceTyp 100kΩ
Minimum Shutdown High Level1.9V
Maximum Shutdown Low Level0.8V
VSENSE Input CurrentTyp 13nA
Continuous Output Current500mA
Transient Peak Current900mA
All parameters (12)ExpandCollapse
Power
Current - Supply320µA
Voltage - Supply2.2V ~ 5.5V
Environment and package
Mounting TypeSurface Mount
Operating Temperature0°C~125°C
PackageTube
Package / Case8-PowerSOIC (0.154", 3.90mm Width)
Supplier Device Package8-SO PowerPad
Other
ApplicationsDDR-II Terminator
Base Product NumberLP2997
MfrTexas Instruments
Product StatusActive
Series-

Pinout and package

Figure 2. SO PowerPAD-8 Layout…
Figure 2. SO PowerPAD-8 Layout…
Package: SO PowerPAD (DDA), 8 Pins
PinNameFunctionSource
1GND, Ground
2SD, Shutdown (Active Low)
3VSENSE, Feedback pin for regulating VTT
4VREF, Buffered internal reference voltage of VDDQ/2
5VDDQ, Input for internal reference equal to VDDQ/2
6AVIN, Analog input pin
7PVIN, Power input pin
8VTT, Output voltage for connection to termination resistors
EPEP, Exposed pad thermal connection, Connect to Ground

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