LP2996M/NOPB National Semiconductor, LP2996M/NOPB Datasheet - Page 12
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LP2996M/NOPB
Manufacturer Part Number
LP2996M/NOPB
Description
IC DDR TERMINATION REG 8SOIC
Manufacturer
National Semiconductor
Datasheet
1.LP2996MNOPB.pdf
(18 pages)
Specifications of LP2996M/NOPB
Applications
Converter, DDR
Voltage - Input
2.2 ~ 5.5 V
Number Of Outputs
1
Operating Temperature
0°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Polarity
Positive
Input Voltage Max
5.5 V
Output Voltage
1.159 V, 1.259 V, 1.359 V
Output Type
Fixed
Output Current
1.5 A
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
0 C
Reference Voltage
1.358 V
Primary Input Voltage
2.5V
No. Of Outputs
1
No. Of Pins
8
Operating Temperature Range
0°C To +125°C
Msl
MSL 1 - Unlimited
Filter Terminals
SMD
Rohs Compliant
Yes
For Use With
LP2996MREVAL - BOARD EVALUATION LP2996MR
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Output
-
Lead Free Status / Rohs Status
Details
Other names
*LP2996M
*LP2996M/NOPB
LP2996M
*LP2996M/NOPB
LP2996M
www.national.com
DDR-II APPLICATIONS
With the separate VDDQ pin and an internal resistor divider
it is possible to use the LP2996 in applications utilizing DDR-
II memory.
tions of recommended circuits with output curves displayed
in the Typical Performance Characteristics.
If it is not desirable to use the 1.8V rail it is possible to connect
the output stage to a 3.3V rail. Care should be taken to not
exceed the maximum junction temperature as the thermal
dissipation increases with lower V
Figure 6
and
Figure 7
FIGURE 7. SSTL-2 Implementation with higher voltage rails
TT
show several implementa-
FIGURE 9. DDR-II Termination with higher voltage rails
output voltages. For this
FIGURE 8. Recommended DDR-II Termination
Figure 6
shows
12
the recommended circuit configuration for DDR-II applica-
tions. The output stage is connected to the 1.8V rail and the
AVIN pin can be connected to either a 3.3V or 5V rail. For new
designs, the LP2997 or LP2998 is recommended for DDR-II
applications.
reason it is not recommended to power PVIN off a rail higher
than the nominal 3.3V. The advantage of this configuration is
that it has the ability to source and sink a higher maximum
continuous current.
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