LP2995M-EVAL National Semiconductor, LP2995M-EVAL Datasheet - Page 9
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LP2995M-EVAL
Manufacturer Part Number
LP2995M-EVAL
Description
BOARD EVALUATION LP2995M
Manufacturer
National Semiconductor
Specifications of LP2995M-EVAL
Channels Per Ic
1 - Single
Current - Output
1.5A
Voltage - Input
2.2 ~ 5.5V
Regulator Type
Positive Fixed
Operating Temperature
0°C ~ 125°C
Board Type
Fully Populated
Utilized Ic / Part
LP2995
Lead Free Status / RoHS Status
Not applicable / Not applicable
Voltage - Output
-
Lead Free Status / Rohs Status
Not Compliant
Typical Application Circuits
The typical application circuit used for SSTL-2 termination
schemes with DDR-SDRAM can be seen in
For SSTL-3 and other applications it may be desirable to
change internal reference voltage scaling from VDDQ * 0.5.
An external resistor in series with the VDDQ pin can be used
to lower the reference voltage. Internally two 50 kΩ resistors
Another application that is sometimes required is to increase
the V
This can be accomplished independently of V
TT
output voltage from the scaling factor of VDDQ * 0.5.
Figure
FIGURE 5. SSTL-2 Implementation
FIGURE 6. SSTL-3 Implementation
REF
by using a
5.
FIGURE 7.
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set the output V
a 11.1 kΩ external resistor will change the internal reference
voltage causing the two outputs to track VDDQ * 0.45. An
implementation of this circuit can be seen in
resistor divider network between V
example of this circuit can be seen in
TT
to be equal to VDDQ * 0.5. The addition of
20039306
20039307
20039303
TT
, V
Figure
SENSE
Figure
and Ground. An
7.
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6.