LM2736Y EVAL National Semiconductor, LM2736Y EVAL Datasheet

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LM2736Y EVAL

Manufacturer Part Number
LM2736Y EVAL
Description
BOARD EVALUATION LM2736Y
Manufacturer
National Semiconductor
Datasheets

Specifications of LM2736Y EVAL

Main Purpose
DC/DC, Step Down
Outputs And Type
1, Non-Isolated
Voltage - Output
1.5V
Current - Output
750mA
Voltage - Input
3 ~ 18V
Regulator Topology
Buck
Frequency - Switching
550kHz
Board Type
Fully Populated
Utilized Ic / Part
LM2736
Lead Free Status / RoHS Status
Not applicable / Not applicable
Power - Output
-
© 2005 National Semiconductor Corporation
LM2736 Evaluation Board
Introduction
The LM2736 demo board is configured to convert 5V input to
1.5V output at 750 mA load current using the LM2736X 1.6
MHz or the LM2736Y 550 kHz step down DC-DC regulator.
The tiny low profile thin SOT23 package allows the demo
board to be manufactured using less than 1 square inch of a
4-layer printed circuit board.
The circuit is configured with the boost diode connected to
V
maximum operating limit of 5.5V + V
ration. This will ensure that the voltage between the Boost
and SW pins, V
proper operation. Please see the LM2736 datasheet for
more information regarding this requirement.
A bill of materials below describes the parts used on this
demo board. A schematic and layout have also been in-
IN
, and according to the datasheet, V
BOOST
- V
SW
, does not exceed 5.5V for
IN
fD2
must not exceed the
AN201709
using this configu-
LM2736 Demo Board Schematic
National Semiconductor
Application Note 1418
Maurice Eaglin
October 2005
cluded below along with measured performance character-
istics. The schematics at the end of this document show how
to re-configure this demo board for various input and output
conditions as discussed in the LM2736 datasheet. Short or
leave open the indicated connection as indicated in the
schematics. The above restrictions for the input voltage are
valid only for the demo board as shipped with the demo
board schematic below.
Operating Conditions
V
V
I
O
IN
O
= 750 mA
= 1.5V
= 5V
20170901
www.national.com

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LM2736Y EVAL Summary of contents

Page 1

... Please see the LM2736 datasheet for more information regarding this requirement. A bill of materials below describes the parts used on this demo board. A schematic and layout have also been in- © 2005 National Semiconductor Corporation National Semiconductor Application Note 1418 Maurice Eaglin ...

Page 2

... Murata Murata Vishay Diodes, Inc. Vishay National Semiconductor International Rectifier R TDK Vishay Vishay Vishay Manufacturer Murata Murata Vishay Diodes, Inc. Vishay National Semiconductor International Rectifier R TDK Vishay Vishay Vishay 2 20170902 Part Number Package Type GRM42-6X5R475K10 1206 GRM42-6X5R106K6.3 1206 VJ1206Y103KXXA 1206 1N4148W ...

Page 3

PCB Layout 20170903 Top Layer 3 www.national.com ...

Page 4

PCB Layout (Continued) www.national.com 20170904 Internal Plane 1 (GND) 4 ...

Page 5

PCB Layout (Continued) 20170905 Internal Plane www.national.com ...

Page 6

PCB Layout (Continued) www.national.com 20170906 Bottom Layer 6 ...

Page 7

Additional Circuit Configuration Schematics V Derived from V BOOST OUT V Derived from V BOOST SHUNT 7 20170907 20170908 www.national.com ...

Page 8

Additional Circuit Configuration Schematics www.national.com (Continued) V Derived from Series Zener Diode (V BOOST V Derived from Series Zener Diode (V BOOST 8 20170909 ) IN 20170910 ) OUT ...

Page 9

... BANNED SUBSTANCE COMPLIANCE National Semiconductor manufactures products and uses packing materials that meet the provisions of the Customer Products Stewardship Specification (CSP-9-111C2) and the Banned Substances and Materials of Interest Specification (CSP-9-111S2) and contain no ‘‘Banned Substances’’ as defined in CSP-9-111S2. ...

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