LMZ10504DEMO/NOPB National Semiconductor, LMZ10504DEMO/NOPB Datasheet

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LMZ10504DEMO/NOPB

Manufacturer Part Number
LMZ10504DEMO/NOPB
Description
BOARD DEV PWR MODULE LMZ10504
Manufacturer
National Semiconductor
Series
SIMPLE SWITCHER®r
Datasheets
1.LMZ10504TZ-ADJNOPB.pdf (22 pages)
2.LMZ10504DEMONOPB.pdf (6 pages)

Specifications of LMZ10504DEMO/NOPB

Main Purpose
DC/DC, Step Down
Outputs And Type
1, Non-Isolated
Voltage - Output
2.5V
Current - Output
4A
Voltage - Input
2.95 ~ 5.5 V
Regulator Topology
Buck
Frequency - Switching
1MHz
Board Type
Fully Populated
Utilized Ic / Part
LMZ10504
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Power - Output
-
Other names
LMZ10504DEMO
© 2010 National Semiconductor Corporation
LMZ10504 4A Demo Board
SIMPLE SWITCHER® Power
Module Quick Start Guide
Introduction
The LMZ10504 SIMPLE SWITCHER® power module is a
complete, easy-to-use DC-DC solution capable of driving up
to a 4A load with exceptional power conversion efficiency,
output voltage accuracy, line and load regulation. The
LMZ10504 is available in an innovative package that en-
hances thermal performance and allows for hand or machine
soldering.
The LMZ10504 can accept an input voltage rail between
2.95V and 5.5V and deliver an adjustable and highly accurate
output voltage as low as 0.8V. One megahertz fixed frequen-
cy PWM switching provides a predictable EMI characteristic.
Two external compensation components can be adjusted to
set the fastest response time, while allowing the option to use
ceramic and/or electrolytic output capacitors. Externally pro-
grammable soft-start capacitor facilitates controlled startup.
The LMZ10504 is a reliable and robust solution with the fol-
lowing features: lossless cycle-by-cycle peak current limit to
protect for over current or short-circuit fault, thermal shut-
down, input under-voltage lock-out, and pre-biased startup.
Packaging Highlights
•
•
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Single exposed pad and standard pin out for easy
mounting and manufacturing
10.2 x 13.8 x 4.6 mm (0.4 x 0.39 x 0.18 in) package
20W maximum total output power
1.7” x 2.3” (4.3 cm x 5.8 cm) reduced size demo board form
factor
Top Layer
301142
30114211
National Semiconductor
Application Note 2030
Ricardo Capetillo
January 22, 2010
Demo Board Features
•
•
•
•
•
•
•
•
•
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Typical Applications
•
•
•
•
•
•
Power input voltage range 2.95V-5.5V
Input UVLO at 2.7V
Adjustable output voltage range 0.8V to 5V
Up to 4A output current
Integrated shielded inductor in module
Efficiency up to 96% at 1A load
All ceramic capacitor design
Partial compensation allows adjustment of the control loop
Starts into pre-biased loads
±1.63% maximum feedback voltage accuracy over
temperature
±2.5% maximum feedback voltage accuracy over full line,
load, and temperature conditions
Thermal Shutdown
Only 9 external passives plus module
Two layer low cost assembly
Point-of-load conversions from 3.3V and 5V rails
Space constrained applications
Extreme temperatures/no air flow environments
Noise sensitive applications (i.e. transceiver, medical)
Industrial controls
Networking equipment
Bottom Layer
30114212
www.national.com

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LMZ10504DEMO/NOPB Summary of contents

Page 1

... Top Layer © 2010 National Semiconductor Corporation National Semiconductor Application Note 2030 Ricardo Capetillo January 22, 2010 Demo Board Features • ...

Page 2

Absolute Maximum Module Ratings VIN to GND EN, FB GND Module Operating Ratings VIN Junction Temperature Range ( Demo Board Schematic www.national.com Demo Board Operating Ratings -0. -0. OUT ...

Page 3

... Quiescent current If the enable post is pulled low, the mod- ule will be disabled and about 260 µA of supply current will flow into VIN (pin 1). To enable the device, leave the enable Case Size Manufacturer TO-PMOD National Semiconductor 1210 TDK E Panasonic 603 TDK ...

Page 4

Performance Characteristics Efficiency 2.5V, T OUT Load Transient Response 2.5V, I OUT OUT OUT 20 mV/DIV, 20 MHz Bandwidth Limited Current Derating = 2.5V, θ 5.0V OUT www.national.com = ...

Page 5

Load Transient Response V = 3.3V 2. 0.4A to 3.6A step IN OUT OUT 20 mV/DIV, 20 MHz Bandwidth Limited 30114210 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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