LM2675-5.0EVAL National Semiconductor, LM2675-5.0EVAL Datasheet - Page 2

• Manufacturer Part Number: LM2675-5.0EVAL
• Description: EVALUATION BOARD FOR LM2675-5.0
• Manufacturer: National Semiconductor
• Series: SIMPLE SWITCHER®r

Specifications of LM2675-5.0EVAL

• Main Purpose: DC/DC, Step Down
• Outputs And Type: 1, Non-Isolated
• Voltage - Output: 5V
• Current - Output: 1A
• Voltage - Input: 8 ~ 40V
• Regulator Topology: Buck
• Frequency - Switching: 260kHz
• Board Type: Fully Populated
• Utilized Ic / Part: LM2675
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Other names: *LM2675-5.0EVAL; *LM2675-5.0EVAL/NOPB; LM2675-5.0EVAL/NOPB

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
Evaluation Board Design
Operating the Evaluation Board
The input source for the LM2675-5.0 evaluation board must
be greater than 8V for proper startup and operation. The
maximum input voltage is 40V, including transients. During
startup, the LM2675 may be left unloaded. If a load is
connected, the peak current drawn from the source may be
as great as 2.2A (for a full 1A load). A source with a lower
current limit will slow down the startup of the regulator. If its
current limit is sufficiently low, typically at or near the steady-
state input current level, the regulator may not start up at all.
The load for the evaluation board can be from 0 Amps (an
open-circuit) to 1 Amp. Higher load currents can activate the
LM2675 current limit, which will shut the regulator down until
the load is reduced.
Designing with the LM2675
The LM2675 SIMPLE SWITCHER step-down converters are
available in fixed output voltages of 3.3V, 5.0V, 12V, and an
adjustable output version, each rated for a 1A load.
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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.
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TABLE 2. Component Manufacturers
(Continued)
Phone
2. A critical component is any component of a life
A family of standard inductors for use with the LM2675 are
available from several manufacturers, which greatly simpli-
fies the design of switch-mode power supplies. The
datasheet also includes selection guides for diodes and
capacitors designed to work in these switching regulator
designs.
While the LM2675 product datasheet contains an easy,
straight-forward design procedure, design software is also
available, which further simplifies the system design.
“LM267X Made Simple” is available from the Power Man-
agement Products section of National Semiconductor’s web
site at www.national.com/appinfo/power/index.html.
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.
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National Semiconductor
Asia Pacific Customer
Response Group
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www.coilcraft.com
www.coilcraft.com
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National Semiconductor
Japan Ltd.
Tel: [phone]
Fax: [phone]