LP2996LQEVAL National Semiconductor, LP2996LQEVAL Datasheet - Page 2

• Manufacturer Part Number: LP2996LQEVAL
• Description: BOARD EVALUATION LP2996LQ
• Manufacturer: National Semiconductor

Specifications of LP2996LQEVAL

• 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: LP2996
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• Voltage - Output: -

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Application
The LP2996 evaluation board can be used immediately in
either a static test environment to check functionality or in a
memory termination scheme on a motherboard. In either
implementation the following steps should be taken to en-
sure correct operation.
1. Connect leads from the evaluation board. The board
2. AVIN and PVIN should be connected to a 2.5V power
3. The VDDQ input provides the internal divide by two
4. The VREF pad is the output for the VREF from the
5. The SD pin can be initially left floating as it has an
6. The remaining two pads are for the force and sense
layout has been designed to allow banana jack sockets
to be directly soldered.
supply.
reference voltage. Both VREF and VTT will track this
internal voltage, nominally a 2.5V will be applied.
LP2996 after being bypassed by a ceramic capacitor.
This can be connected either to a multimeter for confir-
mation or directly to the memory controller and DIMMS.
internal pull-up
leads of the VTT output. These should be connected
directly to the termination plane or a multimeter if inter-
2
Performance
The LP2996 has been designed to accommodate several
different capacitor options to allow the designer to optimize
the solution for the specific application. For most desktop
systems large aluminum electrolytic capacitors will be used
for their low cost. However, in height limited situations such
as laptops fewer high performance capacitors might be
implemented such as specialty polymers. The table below
lists some of the capacitors that can be used and a vendor
that offers that product line.
Oscon
SP
MLCC
Aluminum
Capacitor
ested in verification. The output will be regulated where
the VSENSE leads connect to the VTT leads permitting
the connection to a motherboard without suffering from
large resistance drops.
Series
Taiyo Yuden
Panasonic
Panasonic
Vendor
Vishay
Vendor Phone Number
(207)-324-4140
(714)-373-7857
(800)-348-2496
(714)-373-7857