LMZ12003DEMO/NOPB National Semiconductor, LMZ12003DEMO/NOPB Datasheet

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LMZ12003DEMO/NOPB

Manufacturer Part Number
LMZ12003DEMO/NOPB
Description
BOARD DEV PWR MODULE LMZ12003
Manufacturer
National Semiconductor
Series
SIMPLE SWITCHER®r
Datasheets
1.LMZ12003TZ-ADJNOPB.pdf (16 pages)
2.LMZ12003DEMONOPB.pdf (6 pages)

Specifications of LMZ12003DEMO/NOPB

Main Purpose
DC/DC, Step Down
Outputs And Type
1, Non-Isolated
Voltage - Output
1.8V
Current - Output
3A
Voltage - Input
4.5 ~ 20 V
Regulator Topology
Buck
Frequency - Switching
Up to 1MHz
Board Type
Fully Populated
Utilized Ic / Part
LMZ12003
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Power - Output
-
Other names
LMZ12003DEMO
© 2010 National Semiconductor Corporation
LMZ12003 3A Demo Board
SIMPLE SWITCHER® Power
Module Quick Start Guide
Description
The LMZ12003 SIMPLE SWITCHER power module is a com-
plete, easy to use step-down DC-DC solution capable of
driving up to 3A load The LMZ12003 is available in an inno-
vative, easy to use package that enhances thermal perfor-
mance and allows for hand or machine soldering.
The LMZ12003 demo board can accept an input voltage rail
between 4.5V and 20V and deliver an adjustable and highly
accurate output voltage as low as 0.8V. The LMZ12003 only
requires three external resistors and four external capacitors
to complete the power solution. The LMZ12003 is a reliable
and robust solution with the following protection features:
thermal shutdown, input under-voltage lockout, output over-
voltage protection, short-circuit protection, output current lim-
it, and allows startup into a pre-biased output. A single resistor
adjusts switching frequency up to 1 MHz.
Packaging Highlights
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•
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7 lead module package (Similar to TO-263)
Single exposed die attach pad for enhanced thermal
performance
10.2 x 13.8 x 4.6 mm module package
High power density
1.7” x 2.3” reduced size demo board form factor
Front View
301143
30114301
National Semiconductor
Application Note 2031
Alan Martin
October 12, 2010
Demo Board Features
•
•
•
•
•
•
•
•
•
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Typical Applications
•
•
•
•
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Power input voltage range 4.5V-20V
UVLO programmed at 4.5V
Adjustable output voltage range 0.8V to 6V
Up to 3A output current
Integrated shielded inductor in module
Efficiency up to 92%
All ceramic capacitor design
No loop compensation required
Starts into pre-biased loads
Short circuit protection
Thermal Shutdown
Only 9 external passives plus module
2 layer low cost assembly
Point of load conversions from 5V and 12V input rails
Space constrained applications
Industrial controls
Telecom
Networking equipment
Back View
www.national.com
30114302

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LMZ12003DEMO/NOPB Summary of contents

Page 1

... High power density • 1.7” x 2.3” reduced size demo board form factor Front View © 2010 National Semiconductor Corporation National Semiconductor Application Note 2031 Alan Martin October 12, 2010 Demo Board Features • ...

Page 2

Absolute Maximum Module Ratings VIN, RON to GND -0.3V to 25V EN, FB -0. GND Module Operating Ratings VIN 4.5V to 20V EN (Input on pin 6.5V module pin) Junction - 40C to ...

Page 3

Demo Board Bill of Materials Ref Des Ron Rent Renb Rfbt Rfbb Cff Css Cin Cout1 Cout2 U1 Alternate resistor values for alternative output voltages VOUT 6 5 3.3 2.5 1.8 1.5 1.2 0.8 Demo Board Hookup VOUT Connect the ...

Page 4

The secondary function of the RON resistor is to create a nearly constant operating frequency over the input operating voltage range. If the output voltage of the regulator is changed by adjusting the feedback divider then it is ...

Page 5

Notes 5 www.national.com ...

Page 6

... For more National Semiconductor product information and proven design tools, visit the following Web sites at: www.national.com Products Amplifiers www.national.com/amplifiers Audio www.national.com/audio Clock and Timing www.national.com/timing Data Converters www.national.com/adc Interface www.national.com/interface LVDS www.national.com/lvds Power Management www.national.com/power Switching Regulators www.national.com/switchers LDOs www.national.com/ldo LED Lighting www ...

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