LM2731YEVAL National Semiconductor, LM2731YEVAL Datasheet - Page 3
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LM2731YEVAL
Manufacturer Part Number
LM2731YEVAL
Description
BOARD EVALUATION LM2731Y
Manufacturer
National Semiconductor
Series
PowerWise®r
Specifications of LM2731YEVAL
Main Purpose
DC/DC, Step Up
Outputs And Type
1, Non-Isolated
Current - Output
1.8A
Voltage - Input
2.7 ~ 14V
Regulator Topology
Boost
Frequency - Switching
600kHz
Board Type
Fully Populated
Utilized Ic / Part
LM2731
Lead Free Status / RoHS Status
Not applicable / Not applicable
Voltage - Output
-
Power - Output
-
National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.
LIFE SUPPORT POLICY
NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL
COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or
3.3V to 5V Demo Boards
3.3V to 5V boards were fabricated using the LM2731X and
LM2731Y. These boards had the following changes from the
standard BOM listed previously in this document.
1. C2, output capacitor: a 22 µF cap is installed on the
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systems which, (a) are intended for surgical implant
into the body, or (b) support or sustain life, and
whose failure to perform when properly used in
accordance with instructions for use provided in the
labeling, can be reasonably expected to result in a
significant injury to the user.
board. The increased capacitance is necessary for loop
stability.
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2. A critical component is any component of a life
2. R2, is 40.2k to set the output to 5V.
3. C3, is 470 pF (feedforward compensation).
4. L1, is 6.8 µH. This is the maximum inductance which the
support device or system whose failure to perform
can be reasonably expected to cause the failure of
the life support device or system, or to affect its
safety or effectiveness.
LM2731 will provide stable operation at full load current
in the 3.3 to 5V boost configuration.
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